HUDSON MOTOR CAR COMPANY

HUDSON MOTOR CAR COMPANY 1940-1947 MECHANICAL SPECIFICATIONS AND ADJUSTMENTS 1940-1947 TUNE-UP SPECIFICATIONS AND ADJUSTMENTS

Produced by: H U D S O N T E C H 2004

H U D S O N MECHANICAL SPECIFICATIONS and ADJUSTMENTS 1940 Models

I N D E X Model Identification Data 3 Body Types and Weights 3 General Dimensions 3 Commercial Models 4 Wheels and Tires 4 Tire Pressures 4 Engine Specifications Engine Mounting 5 Camshaft 5 Camshaft Bearings 5 Connecting Rods 5 Crankshaft 5 Pistons 5 Piston Pin 5 Piston Rings 5 Inlet Valve and Tappet 6 Exhaust Valve and Tappet 6 Lubrication System 6 Engine Numbering 6 Electrical System Auto-Lite Equipment 6 Generator Specs GDS-4801-A 7 Generator Specs. GDS-4801-A 7 Voltage Regulator VRR-4001-A 7 Lamp Bulb Specifications 8 Clutch 8 Clutch Diameter and Engaging Springs 8 Rear Axle Specifications 9 Gear Ratio (without Overdrive) 9 Gear Ratio (with Overdrive) 9 Brakes Specifications 9 Front Suspension Specifications 10 H U D S O N T E C H 2004

1940 Hudson Mechanical Specifications and Adjustments The 1940 Hudson cars are built in 3 distinct lines and mounted on chassis of 3 different wheelbase lengths. The independent front suspension, center point steering, rear lateral stabilizer (except on Travelers models) and other items are common to all cars in the 1940 Line. MODEL 40 MODEL 43 (SIX), 47 (EIGHT) The model 40 line is produced in two types, the Traveler and the DeLuxe series. Model 40 Traveler 40T. Model 40 DeLuxe 40P Wheelbase 113. Engine--6 cylinder 3 X 4-1/8 Piston displacement 175 cu. inch. Actual Horsepower 92 at 4000 R.P.M. Taxable Horsepower 21.6. Compression ratio 7 to 1. Weight: Traveler DeLuxe 3 Pass. Coupe- 2800 lbs. 2840 lbs. Two-door touring sedan 2895 lbs 2930 lbs. Four-door touring sedan 2940 lbs. 2965 lbs. Victoria Coupe 2830 lbs. 2865 lbs. Convertible Coupe ----- 2860 lbs. Convert. 2-door sedan ----- 2920 lbs. MODEL 41 (SIX), 44 (EIGHT) The models 41 and 44 are identical as far as body and chassis are concerned with the exception of the engine. Wheelbase 118. Engine 3 x 5 3 x 4-1/2 Piston displacement 212 cu. in. 8 cyl.--2s4 cu. in. Actual horsepower 102 at 4000 128 at 4200 RPM RPM Taxable horsepower 21.6. 28.8. Compression ratio 6.50 to 1. 6.50 to 1. Weight: 6 Cylinder 8 Cylinder 3 Passenger coupe- 2950 lbs. 3040 lbs. Victoria coupe 2980 lbs. 3075 lbs. Two-door touring sedan 3020 lbs. 3140 lbs. Four-door touring sedan 3050 lbs. 3185 lbs. Convertible coupe 2980 lbs 3065 lbs. Convert. 2-door sedan 3020 lbs. 3130 lbs. Country Club Series. The model 43 (six) and 47 (eight) use the same engine as the 41 and 44 on 125 wheelbase chassis. Wheelbase 125 6 Cylinder 8 Cylinder Engine 3 x 5. 3 x 4-1/2 Piston displacement 212 cu. in. 254 cu. in. Actual horsepower 102 at 4000 128 at 4200 RPM RPM Taxable horsepower 21.6. 28.8. Compression ratio 6.50 to 1 6.50 to 1 Weight: 5 Pass. Sedan 3240 lbs. 3285 lbs. 7 Pass. Sedan 3355 lbs. 3400 lbs. MODEL 45 (EIGHT DELUXE) The model 45 is identical with model 44 as far as chassisis concerned. Body has deluxe appointments. Weight: Two-door touring Sedan Four-door touring Sedan 3185 lbs. 3215 lbs. GENERAL DIMENSIONS Car overall length-including bumpers: 40 190-3/8 41,44,45 195-3/8 43,47,48 202-3/8 Car overall width - including fenders. Front - 71 Rear - 72 Tread Front - 56-1/2 Rear - 59-1/2 Road Clearance Front Rear 40,41,44,45.48 9-1/2 8-7/16 43 9-5/8 8-5/8 47 9-3/4 8-11/16 Turning Radius 40 20' 6 41,44, 45 20' 9 43, 47, 48 21' 7-3 -

COMMERCIAL MODELS Model 40 Model 48 Cab Pick-up 2945 lbs. Cab Pick-up 3045 lbs. Panel Delivery 3225 lbs. Panel Delivery 3310 lbs. Wheelbase 113 Carry-All 3245 lbs. Engine - 6 cylinder 3 x 4-1/8 Wheelbase 125 Piston displacement 175 Cu. in. Engine - 6 cylinder 3 x 5 Taxable horsepower 21.6 Piston displacement 212 cu. in. Compression ratio 7 to 1 Taxable horsepower 21.6 Actual horsepower 92 @ 4000 R.P.M Compression ratio 6.50 to 1 WHEELS AND TIRES Models Standard Optional 40 T, 40 Utility Coupe, 40 Utility Sedan 16 x 5.50 4-ply 16 x 5.50 6-ply 16 x 6.00 4-ply 15 x 7.00 4-ply 15 x 7.00 6-ply 40P, 41, 44, 45 16 x 6.00 4-ply 16 x 6.00 6-ply 15 x 7.00 4-ply 15 x 7.00 6-ply 43 16 x 6.25 4-ply 16 x 6.25 6-ply 15 x 7.00 4-ply 15 x 7.00 6-ply 47 16 x 6.50 4-ply 16 x 6.50 6-ply 15 x 7.00 4-ply 15 x 7.00 6-ply 40C, 48C 16 x 6.00 4-ply 16 x 6.00 Truck Air Wheel 16 x 6.50 Truck Air Wheel 16 x 7.00 Truck Air Wheel 16 x 6.00 6-ply 15 x 7.00 6-ply 15 x 7.00 4-ply 18 x 6.00 4-ply 18 x 6.00 6-ply TIRE PRESSURES Front Rear Cold Hot Cold Hot All passenger models except with 16 x 5.50 tires 26 lbs. 29 lbs. 30 lbs. 33 Lbs. All models with 1.6 x 5.50 tires 32 lbs. 35 lbs. 32 lbs. 35 lbs. All Business Series 26 lbs. 29 lbs. 30 lbs. - 4-ply 33 lbs. - 4-ply 40 lbs. - 6-ply 44 lbs. - 6-ply - 4 -

ENGINE SPECIFICATIONS 8 cylinder 5 Bearing material Bearing alloy ENGINE MOUNTING Bearing - Diameter and length 6 cylinder Rubber No. 1 2-11/32 x 1-5/8 3 Points No. 2 2-3/8 x 1-3/4 No. 3 2-13/32 x 2-3/8 8 cylinder CAMSHAFT No. 1 2-9/32 x 1 5/8 No. 2 2-5/16 x 1-3/8 Drive Laminated Gear No. 3 2-11/32 x 1-7/8 Time indication marks on Gears No. 4 2-3/8 x 1-3/811 CAMSHAFT BEARINGS No. 5 2-13/32 x 2 End Play taken up by bearing Number: 6 cylinder 2 Diameter and length 8 cylinder 3 6 cylinder Bearing end play.006 -.012 No. 1 2 x 1-1/4 Bearing radial clearance.001 No. 2 1-31/32 x 1-1/16 Adjustment type Shim No. 3 1-9/16 x 1-3/4 8 cylinder No. 1 2.029 x 1-3/8 PISTONS No. 2 1.998 x 1-1/16 Type Cam Ground No. 3 1.966 x 1-1/4 Material Lo-Ex Aluminum No. 4 1.935 x 1-1/16 Alloy No. 5 1.498 x 1-1/2 Weight 10.5 oz. Radial clearance.0025 Length 3-3/16 Pin center to top 1-11/16 CONNECTING RODS Clearance Material D.F. Steel Skirt.001 to.002 Weight Top of Piston.016 Model 40 30-3/4 oz. Depth of Grooves 5/32 All other models 30 oz. Piston Pin Hole Size 3/4 Length - Center to center Models 40,48 5 Pass Sedan - PISTON PIN 48 Pass Chassis 8-5/8 Type Floating All other models 8-3/16 Method of locking Snap rings Lower end bearing Diameter 3/4 Diameter 1-15/16 Length 2-7/16 Length 1-3/8 Fit in Piston (at 200º F.).0003 Radial Clearance.001 Fit in Rod.0003 End Play.007 to.013 Material Bearing alloy PISTON RINGS Upper end bearing Diameter 3/4 Material Cast Iron Length 15/16 Joint type Straight cut- Radial Clearance.0003 Pinned Material Bronze Compression rings Number used 2 CRANKSHAFT Width 3/32 Gap.009 to.011 Type Fully Compensated Oil Rings Bearings Number Used 2 6 cylinder 3 Width - upper 3/16 Width lower 5/32-5 -

Engine Specs, (Cont d) INLET VALVE AND TAPPET LUBRICATION SYSTEM Inlet valve material Silicon Steel Type Hudson Duo-Flo Inlet Valve head outside diameter Automatic 6 Cylinder 1-3/8 Pump type Oscillating 8 cylinder 1-1/2 Plunger Inlet valve opening Pump drive Worm on Camshaft 6 cylinder 1-1/4 Oil cooling by Baffles in 8 cylinder 1-3/8 reservoir Inlet valve lift 11/32 Oil filter screen mesh 40 Inlet valve stem length Capacity - Total 6 cylinder 5-11/32 6 cylinder 5-1/2 Quarts 8 cylinder 5-3/32 8 cylinder 9 Quarts Inlet valve stem diameter 11/32 Capacity - Refill Inlet valve stem clearance.0025 6 cylinder 4-1/2 Quarts Inlet valve tappet clearance.006 Hot 8 cylinder 7 Quarts EXHAUST VALVE AND TAPPET ENGINE NUMBERS Exhaust valve material Silichrome Steel Engine numbers are stamped on top of the cyl- Exhaust valve head outside dia. 1-3/8 inder block between number one and two exhaust Exhaust valve opening 1-1/4 manifold flanges. The engine number is also the Exhaust valve lift 11/32 car serial number. Exhaust valve stem length The first two figures of the engine and car number 6 cylinder 5-11/32 are the year and model of the car. The succeeding 8 cylinder 5-3/32 figures are the actual serial number and these figures Exhaust valve stem diameter 11/32 run in a single series regardless of model. Exhaust valve stem clearance Example - 40101-41102 - 47103 in guide.004 First number is a model 40 Serial No. 101 Exhaust valve tappet clearance.008 Hot Second number is a model 41 Serial No. 102 Valve Stem Guides Removable Third number is a model 47 Serial No. 103 Valve Guide Length 2-9/16 Valve Guide to Cylinder Block Distance: 6 cylinder 1-1/16 8 cylinder 15/16 Valve Spring Pressure Closed 40 lbs at 2 ELECTRICAL AUTO-LITE Equipment Voltage Starting Ignition Model Generator Regulator Starter Switch Distributor Coil 40, 41, 43, 48 GDS-4801-A VRR-4001-A MZ-4079 RBM-2214 IGW-4203 IG-4662 44, 45, 47 GEC-4801-A VRR-4001-A MAB-4103 RBM-2214 IGP-4008-A IG-4641-6 -

Electrical (Cont d) GENERATOR SPECIFICATIONS (GDS 4801 A) Models 40, 48 Rotation Charging rate Control Fuse Brush spring tension C.W.D.E. 8 volt 3rd brush and vibrating voltage regulator None 53 ounces maximum with new brushes Bronze Bearings - commutator end Bearings - clearance.001 to.0025 Bearings - Drive end Ball Field Current Draw Volts Amps. Max. Min. 6.0 1.82 1.65 6.8 2.07 1.87 7.2 2.19 1.98 7.6 2.31 2.09 Motorizing Draw 6.0 5.45 5.10 6.8 5.65 5.38 7.2 5.80 5.50 7.6 6.00 5.65 Maximum output--cold 6.6 28.0 25.0 7.0 29.7 27.0 7.6 32.3 30.0 8.0 34.0 32.0 Charging rate--hot (maximum) Amperes 29 Voltage 8 R.P.M. (generator) 3400 Car speed Approx. 35 M.P.H. GENERATOR SPECIFICATIONS (GEC 4801 A) Models 41, 43, 44, 45, 47 Rotation Charging rate Control Fuse Brush spring tension C.W.D.E. 8 volt 3rd brush and vibrating voltage regulator None 53 ounces maximum with new brushes Generator Specs GEC-4801-A (Cont d) Bearings - commutator end Bronze clearance.001 to.0025 Bearing - Drive end Ball Field Current Draw Volts Amps. Max. Min. 6.0 1.78 1.60 6.8 2.01 1.81 7.2 2.12 1.92 7.6 2.24 2.03 Motorizing Draw 6.0 5.4 4.85 6.8 5.6 5.03 7.2 5.7 5.12 7.6 5.8 5.2 Maximum output--cold 6.6 35.0 30.2 7.0 36.6 31.9 7.6 40.3 35.7 8.0 43.0 39.0 Charging rate--hot (maximum) Amperes 35 Voltage 8 R.P.M. (generator) 3800 Car speed Approx. 43 M.P.H. VOLTAGE REGULATOR DATA (VRR 4001 A) Used on All Models Ground polarity Positive Volts 6 overheating. Carbon resistor marked 30, resistance 28 to 32 ohms Circuit breaker (cutout relay) Points closed 6.4 to 7.0 volts Points open 6.0 amperes at 6.3 volts minimum to 6.4 volts maximum Open circuit voltage at battery 6.3 min. to 6.4 volts max. Armature speed at closing 825 R.P.M. Amperes to open 6 amperes maximum discharge Car speed at closing 9.4 M.P.H. Operating voltage 7.1 to 7.4 volts at 70º F. - 7 -

Lamp Bulb Specifications Position C. P. Base Voltage Mazda No. Headlamp - domestic Sealed Beam Type 6-8 Bonnet side panel 1-1/2 S.C. 6-8 55 Bonnet side panelwith direction indicator 21-3 D.C. 6-8 1154 Instrument 1-1/2 S.C. 6-8 55 Stop and tail 21-3 D.C. 6-8 1154 License lamp 3 S.C. 6-8 63 Dome 15 S.C. 6-8 87 Beam indicator 1 S.C. 6-8 51 Speedometer - Models 40, 41, 44, 45, 48 1 S.C. 6-8 51 Speedometer - Models 43, 47 1-1/2 S.C. 6-8 55 Radio 1-1/2 S.C. 6-8 55 Gen. and oil indicator 1 S.C. 6-8 51 Direction indicator 1 S.C. 6-8 51 Mechanical clock 1-1/2 S.C. 6-8 55 Electric clock 1-1/2 S.C. 6-8 55 CLUTCH CLUTCH SPECIFICATIONS Engaging spring, Models 40, 41, 48, when compressed to 1 3/4 have a weight of 155 lbs. ± 5 lbs. The Models 43, 44, 45, 47 springs when compressed to 1 5/8 have a weight of 135 lbs. ± 5 lbs. Inner springs when compressed to 1 5/8 have a weight of 80 lbs. ± 5 lbs. Clutch finger alignment Not over 005 clearance Clutch throwout finger 7/64 movement between bottom of finger and cover Clutch shifter yoke 13/22 maximum movement Clutch lubricant Lubricant only. Fill at front of flywheel Clutch pedal to floor Clearance 1/3 Pint of Hudsonite 1-1/2 with clutch engaged Clutch pressure plate warpage permissible Not over.010 Clutch facing Cork Clutch pilot bearing Ball Clutch throwout bearing Ball Lubricate at Zerk Fitting on right side of bell housing every 1000 miles. CLUTCH DIAMETER AND ENGAGING SPRINGS Clutch Outer Inner Model Diam. Spring Spring 40 all (except with overdrive and 3 x 5 9 9 3 41 all and 40 with 3 x 5 engine 9 9 6 43,48 and all 6 cylinder models with overdrive 10 12 0-8 -

REAR AXLE SPECIFICATIONS Type Semi floating Gear Type Helical bevel Pinion Bearings Type Taper Roller Adjustment Shim End Play.000"_.001" Differential Bearings Type Taper Roller Adjustment Adjustment Nut Wheel Bearings Type Taper Roller case to reduce thrust wear. Adjustment Shim End Play.002"-004" Pinion and Gear (Matched Gears) Adjustment Shim Lash in Gears.0005"--.0035" Lubrication Type - Summer and Winter S.A.E. 90 E.P. Capacity in Lbs 2-3/4 lbs GEAR RATIOS (WITHOUT OVERDRIVE) 4-1/9 4-5/9 4-7/8 Model 40 Passenger Cars Opt. Std. Opt. Model 40 Commercial Opt. Std. Opt. Model 41 Passenger Std. Opt. ----- Model 43, 47 Std. Opt. ----- Model 44, 45 Std. Opt. ----- Model 48, 5 Passenger Sedan Std. Opt. ----- Model 48, 7 Passenger Sedan Std. Opt. ----- Model 48 Commercial ----- Std. ----- GEAR RATIOS (WITH OVERDRIVE) 4-1/9 4-5/9 4-7/8 Model 40 Passenger Cars Opt. Opt. Std. Model 40 Commercial Opt. Opt. Std. Model 41 Passenger Opt. Std. ----- Model 43, 47 Opt. Std. ----- Model 44, 45 Opt. Std. ----- Model 48, 5 Passenger Sedan Opt. Std ---- Model 48, 7 Passenger Sedan Opt. Std. ----- Model 48 Commercial ----- Opt. Std. BRAKES BRAKE SPECIFICATIONS Type 4 Wheel Bendix Hydraulic Drum Diameter Model 40 Pass. - 40 Traveler 9-1/16" drum Model 40 Commercial 10-1/16" drum Model 41 Passenger 10-1/16 drum Model 43, 44, 45 and 47 11-1/16" drum Model 48 Passenger and Commercial 10-1/16" drum Drum Material Alloy Steel Lining Primary Shoe Moulded Secondary Shoe Woven Width 1-3/4" Thickness 7/32" Length per wheel 40 Pass., 40 Traveler 19" 40 Commc l, 41, 48 22=1/8" 43, 44, 45, 47 23-15/16" Pieces per wheel 2 Lining Area in Square Inches Model 40 Passenger, 40 Traveler 133" Model 40 Commc l, 41,48 155" Model 43, 44, 45, 47 167-1/2" Adjustments Anchor Pin Model 40 Pass., 40 Traveler Pivot Anchor Pin All Other Models Radially Front and Rear Shoe Eccentric and Screw Shoe Clearance Anchor Pin End of Shoe.010" Adjusting Screw End of Shoe 010" Maximum Variation Per Shoe Model 40 Pass., 40 Traveler None All Other Models.003" Mechanical Follow-Up 1-1/4" Pedal to Floor Board Clearance 1/4" - 9 -

FRONT SUSPENSION Front Suspension Specifications Caster 0º preferred - + 1/4º to - 1/4º permissable Camber 1/4º to 3/4º Maximum variation between Right and Left Wheel Caster or Camber 1/2º Toe-in 0-1/16" Pivot Pin Inclination 4º 36' Toe-out ± 30' between wheels Spindle Pivot Pin Thrust Bearing Wheel Bearing Type Wheel Bearing End Play.003" Tie Rod End Type Tie Rod Adjustment Tie Rod Adjustment - To Increase direction of forward wheel travel Tie Rod Adjustment - To Decrease opposite direction Ball Taper roller.001" to Plain bearing Turn rod Turn in Turn in Steering Geometry Front wheels must rest on full floating turn tables and turning angles should read as follows - full weight of car on wheels Left Turn Right Turn Left Wheel Right Wheel Left Wheel Right Wheel 30º 25º 25º 30º Coil Springs Coil springs are identified after inspection by marking them as follows: Part No. Color ID Load at Rate Models Pass. Height 160510 Light Blue 1396 290 40, 41, 48 160511 Yellow 1456 326 43 160512 White 1630 326 44, 45 160512 White 1630 326 47 Right side 160513 Green 1753 326 47 Left Side - 10 -

MECHANICAL SPECIFICATIONS and ADJUSTMENTS 1941 HUDSON 6 & 8

I N D E X Model Identification Data 3 Body Types and Weights 3 Chassis Specifications Chassis Dimensions 4 Engine 4 Wheel and Tire 4 Tire Pressures 4 Propeller Shaft 5 Chassis Torque Specifications 5 Engine Specifications Engine Mounting 5 Camshaft 5 Camshaft Bearings 5 Connecting Rods 6 Spark Plug 6 Crankshaft 6 Pistons 6 Piston Pin 6 Piston Rings 6 Valve Locations 6 Valve Timing 7 Timing Gear Lash 7 Valve Stem Guide 7 Compression Ratio 7 Inlet Valve and Tappet 7 Engine (Cont d) Exhaust Valve and Tappet 7 Valve Stem Guides 7 Valve Spring Pressure 7 Lubrication System 7 Electrical System Generator Specifications 8 Distributor 8 Voltage Regulator 9 Spark Plugs 10 Ignition Coil 10 Starting Motor 10 Battery 11 Bulbs 11 Horns 11 Clutch 12 Clutch Diameter and Engaging Springs 12 Transmission 12 Lubricant 13 Overdrive Specifications 13 Rear Axle Specifications 13 Gear Ratio (without Overdrive) 13 Gear Ratio (with Overdrive) 13 Brakes 14 Suspension 14

1941 Hudson Mechanical Specifications and Adjustments MODELS MODEL IDENTIFICATION DATA SERIES Traveler Six Deluxe Six Business Cars Six Super Six 11 Commodore Six 12 Commodore Eight 14 Commodore Custom 8 Coupe 15 10T 10P 10C Commodore Custom 8 Sedan 17 Big Boy Business Cars 18C BODY TYPES AND WEIGHTS 1941 MODELS TRAVELER SIX SERIES 10T. 116" Wheelbase Serial Numbers 10 101 and upward. Engine 6 cylinder, 3" bore, 4 1/8" stroke, 11.6 A.M.A. HP, 175 cubic inches displacement. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Sedan 4 Door Touring Sedan 2850 lbs. 2950 lbs. 2850 lbs. 2900 lbs. DELUXE SIX SERIES 10P. Wheelbase, Serial Numbers and Engine same as 10T. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Sedan 4 Door Touring Sedan Convertible 2900 lbs. 2950 lbs. 2900 lbs. 2950 lbs. 2950 lbs. BUSINESS CARS SIX SERIES 10C, Wheelbase, Serial Numbers and Engine same as 10T. Utility Coupe Utility Coach Cab Pickup Panel Delivery Cab and Chassis 2900 lbs 2825 lbs 3050 lbs. 3295 lbs. 2705 lbs. SUPER SIX SERIES 11, 111" Wheelbase Serial Numbers 11 101 and upward. Engine 6 Cylinder, 3" bore, 5" stroke, 11.6 A.M.A. HP, 212 cubic inches displacement. SUPER SIX SERIES 11 (Cont d) 3 Pass, Coupe 6 Passenger Club Coupe Brougham (2 Dr. Club Sedan) Brougham (Convert. Sedan Sedan Convertible Sedan Station Wagon 2935 lbs. 2980 lbs. 3000 lbs. 3125 lbs. 3050 lbs. 3200 lbs. 3315 lbs. COMMODORE SIX SERIES 12, 111" Wheelbase Serial Numbers 12 101 and upward. Engine same as Super Six 11. 3 Passenger Coupe 4 Passenger Victoria Coupe Brougham (2 Door Club Sedan) Brougham (Convert. Sedan) 4 Door Sedan 3000 lbs. 3045 lbs 3050 lbs 3160 lbs. 3100 lbs COMMODORE EIGHT SERIES 14, 111" Wheelbase Serial Numbers 14 101 and upward. Engine 8 cylinder, 3" bore, 4 1/2" stroke, 28.8 A.M.A. HP, 254 cubic inches displacement. 3 Passenger Coupe 4 Passenger Victoria Coupe Brougham (2 Door Club Sedan) 4 Door Sedan Convertible Sedan 3135 lbs 3110 lbs 3110 lbs. 3260 lbs. 3400 lbs. COMMODORE EIGHT CUSTOM COUPE SERIES 15, 111" Wheelbase Serial Numbers 15 101 and upward. Engine same as Commodore Eight 14. 3 Passenger Coupe 6 Passenger Club Coupe 3185 lbs. 3235 lbs. COMMODORE EIGHT CUSTOM SEDAN SERIES 17, 128" Wheelbase Serial Numbers 17 101 and upward. Engine same as Commodore Eight 14. 7 Passenger Sedan 5 Passenger Touring 3440 lbs. 3400 lbs. SIX BIG BOY SERIES 18C, 128" Wheelbase Serial Numbers 18 101 and upward. Engine same as Super Six 11. 7 Passenger Sedan 3155 lbs. 7 Passenger Carry All 3165 lbs. 3

CHASSIS SPECIFICATIONS CHASSIS DIMENTIONS Overall Width (Incl. Fenders) Tread Front 71 Front 56 1/4 Rear 59 1/2 Rear 59 1/2 Overall Height Road Clearance Front Rear 10T, 10P 68 10T with 5.50 Tire 9 1/4 8 11, 12, 14, 15, 17, 18P 68 3/4 10P, 11 with 6.00 Tire 9 5/8 8 3/8 10C, 18C Cab Pickup 81 12, 14 with 6.25 Tire 9 3/4 8 1/2 10C, 18C Panel Delivery 81 15, 17 with 6.50 Tire 10 8 5/8 Overall Length (Incl. Bumpers) Turning Radius 10 197 10T, 10P, 10C 20 8 11, 12, 14, 15 202 11, 12, 14, 15 21 1 17, 18P 209 17, 18P, 18C 21 10 ENGINE Models No. Bore Stroke A.M.A. Disp. Cyl. H.P. C.I. 10T, 10P, 10C 6 3 4 1/8 21.6 175 11, 12, 18P, 18C 6 3 5 21.6 212 14, 15, 17 8 3 4 1/2 28.8 254 WHEEL AND TIRE SPECIFICATIONS Models Standard Optional 10T, 10 Utility Coupe, 10 Utility Sedan 16 x 5.50 4 ply 16 x 5.50 6 ply 16 x 6.00 4 ply 15 x 7.00 4 ply 15 x 7.00 6 ply 10P, 11 16 X 6.00 4 ply 16 x 6.00 6 ply 15 x 7.00 4 ply 15 x 7.00 6 ply 12, 14, 15 16 x 6.25 4 ply 16 x 6.25 6 ply 15 x 700 4 ply 15 x 7.00 6 ply 17 16 x 6.50 4 ply 16 x 6.50 6 ply 15 x 7.00 4 ply 15 x 7.00 6 ply 10 C, 18C 16 x 6.00 4 ply 16 x 6.00 Truck Air Wheel 15 x 7.00 6 ply 16 x 6.50 Truck Air Wheel 18 x 6.00 4 ply 15 x 7.00 Truck Air Wheel 18 x 6.00 6 ply 16 x 6.00 6 ply 16 x 7.00 4 ply TIRE PRESSURES Front Rear Cold Hot Cold Hot All passenger models Except with 16 x 5.50 tires 26 lbs. 39 lbs. 30 lbs. 33 lbs. All models with 16 x 5.50 tires 32 lbs. 35 lbs. 32 lbs. 35 lbs. All Business Series 26 lbs. 29 lbs. 30 lbs. 4 ply 33 lbs. 4 ply 40 lbs. 6 ply 44 lbs. 6 ply Wheel and Tire run out 1/6 to 3/32 4

Chassis Specs. (Cont d) PROPELLER SHAFT Propeller shaft Tubular Length C to C Length of of joints shaft only 10 without overdrive 58 7/16 55 23/32 10, 11, 12, 14, 15 with overdrive 51 1/8 48 13/32 11, 12, 14, 15 without overdrive 58 7/16 55 23/32 17, 18 with overdrive 58 1/16 55 5/32 CHASSIS TORQUE SPECIFICATIONS Foot Pounds Foot Pounds Propeller shaft U bolts 20 Steering wheel nuts 25 Clutch and brake pedal rod nuts 22 Wheel nut 65 Brake anchor pin nuts 85 Rear axle shaft nut 95 Clutch finger fulcrum nuts 44 Rear spring clip nuts 40 Connecting rod bolt nuts 40 Steering arm nut 105 Cylinder head studs 6 Cylinder 40 Differential carrier nuts 37 Cylinder head studs 8 Cylinder 45 Steering center arm bolt nut 65 Main bearing bolts 75 Pitman arm nut 140 Flywheel to crankshaft bolt 45 Spark Plugs 28 Front engine support bolt 45 Water jacket cover bolt 15 Clutch cover to flywheel bolts 22 ENGINE SPECIFICATIONS Engine Mounting Rubber 3 points Stroke Model 10 4 1/8 Bore Model 10, 11, 12 3 Model 11, 12 5 Model 14, 15, 17 3 Model 17, 15, 17 4 1/2 Camshaft Drive Laminated Gears Timing Marks On Gears Camshaft Bearings Bearings Steel back, Bermax Lined 8 Cylinder Diameter and length No. 1 2.029 x 1 3/8 6 Cylinder No. 2 1.998: x 1 1/16 No. 1 2.000 x 1 1/4 No. 3 1.966 x 1 1/4 No. 2 1.968 x 1 1/16 No. 4 1.9355 x 1 1/16 No. 3 1.5625 x 11/16 No. 5 1.498 x 1 5/16 Radial Clearance.002 to.0025 5

Connecting Rods Material D. F. Steel Lower End Bearing Weight Diameter 1 15/16 Model 10 30 3/4 oz. Length 1 3/8 All Other Models 30 oz. Radial Clearance.001 Length, Center to Center End Play.007 to.013 Models 19, 18, 5 Pass. Material Bearing Alloy Sedan 18, Pass. Chassis 8 5/8 All Other Models 8 3/16 Spark Plug Champion J9, Hudson Special Crankshaft Type Fully Compensated 8 Cylinder Bearings No. 1 2 9/32 x 1 5/8 6 Cylinder 3 No. 2 2 5/16 x 1 3/8 8 Cylinder 8 No. 3 2 11/32 x 1 7/8 Bearing Material Bearing Alloy No. 4 2 3/8 x 1 3/8 Bearing Diameter and Length No. 5 2 13/32 x 2 6 Cylinder End Play Taken up by Bearing Number: No. 1 2 11/32 x 1 5/8 6 Cylinder 2 No. 2 2 3/8 x 1 3/4 8 Cylinder 3 No. 3 2 13/32 x 2 3/8 Bearing End Play.006.012 Bearing Radial Clearance.001 Adjustment Type None Pistons Type Cam Ground Clearance Material Lo Ex Aluminum Alloy Skirt.001 to.002 Weight 10.5 oz. Top of Piston.016 Length 3 3/16 Depth of Grooves 5/32 Pin center to top 1 11/16 Piston Pin Hole Size 3/4 Piston Pin Type Floating Fit in Piston at 200º F.0003 Method of Locking Snap Rings Fit in Rod.0003 Diameter 3/4 Piston Rings Material Cast Iron Oil Rings Joint Type Straight cut Pinned Number used 2 Compression Rings Width upper 3/16 Number used 3 Width lower (3 x 5, all 8) 5/32 Width 3/32 Width lower (3 x 4 1/8 ) 3/16 Gap.009 to.011 Valve Locations 6 Cylinder intake from front 2 4 5 8 9 11 8 Cylinder intake from front 2 3 6 7 10 11 14 15 6 Cylinder exhaust from front 1 3 6 7 10 12 8 Cylinder exhaust from front 1 4 5 8 9 12 13 16 6

Engine (Cont d) Valve Timing Intake Opens 10º 40 BUDC Exhaust Opens 50º BLDC Closes 60º ALDC Closes 18º 44 AUDC Timing gear lash.002 to.004 Valve Stem Guide 6 Cylinder Sets 1 1/16 below top of cylinder. 8 Cylinder Sets 15/16 below top of cylinder. Compression Ratio 3 x 4 1/8 7 1/4 to 1 3 x 4 1/2 6 1/2 to 1 3 x 5 6 1/2 to 1 Inlet Valve and Tappet Valve Material Silicon Steel Valve Stem Diameter 11/32 Valve Lift 11/32 Valve Stem Clearance.0025 Valve Tappet Clearance.006 Hot 3x5 and all 8 cylinder Valve Tappet Clearance.010 Hot 3x4 1/8 (if on valve cover plate) Valve Tappet Clearance.006 Hot (if not on valve cover plate) 6 Cylinder 8 Cylinder Valve head outside diameter 1 3/8 1 1/2 Valve Opening 1 1/4 1 3/8 Valve Stem Length 5 11/32 5 3/32 Exhaust Valve and Tappet Valve Material Silichrome Steel Valve Stem Diameter 11/32 Valve Head Outside Dia. 1 3/8 Valve Stem Clear. in Guide.004 Valve Opening 1 1/4 Valve Tappet Clearance.008 Hot 3x5 and 8 Cylinder Valve Tappet Clearance.012 Hot 3x4 1/8 (if on valve cover plate) Valve Lift 11/32 Valve Tappet Clearance.008 Hot 3x4 1/8 if not on valve cover plate. Valve Stem Length: 6 Cylinder 5 11/32 8 Cylinder 5 3/32 Valve Stem Guides Removeable Valve Spring Pressure (Closed) 40 lbs. at 2 Lubrication System Type Hudson Duo Flo Atuomatic Capacity Total Pump Type Oscillating Plunger 6 Cylinder 5 1/2 Qts Pump Drive Worm on Camshaft 8 Cylinder 9 Qts. Oil Cooling by Baffles in reservoir Capacity Refill Oil Filter Screen 40 mesh 6 Cylinder 4 1/2 Qts. 8 Cylinder 7 Qts. 7

Engine Specs. (Cont d) Horsepower Actual 3 x 4 1/8 Model 10 92 3 x 4 1/2 Models 14, 15, 17 128 3 x 5 Model 11, 12, 18 102 Horsepower Taxable 3 x 4 1/8 Model 10 21.6 3 x 4 1/2 Models 14, 15, 17 28.8 3 x 5 Model 11, 12, 18 21.6 ELECTRICAL SYSTEM GENERATOR SPECIFICATIONS Make Auto Lite. Model GDS 4801 A, Models 10,18 not used with 3x5 engine. GEC 4801 A, Models 11,12,14,15,17 and 10 with 3x5 engine. Type 3rd Brush., all Models. Rotation C.W.D.E all Models. Drive Fan Belt, all Models. Control 3rd Brush and Vibrating Regulator. Fuse None. Bearing, Commutator end Bronze, all Models. Bearing, drive end Ball,, all Models. Bearing clearance.001" to.0025" all Models. Brush spring tension 53 oz. maximum with new brushes, all Models. Field Current Draw. Models 10 and 18 Motorizing Draw.. Models 11,12,14,15,17,18 Volts Amps. Volts Amps. Max. Min. Max. Min. 6.0 1.82 1.65 6.0 5.4 4.85 6.8 2.07 1.87 6.8 5.6 5.03 7.2 2.19 1.98 7.2 5.7 5.12 7.6 2.31 2.09 7.6 5.8 5.2 Models ll.,12,14,15,17,18 Maximum Output cold.. Models 10 and 18 6.0 1.78 1.60 6.6 28.0 25.0 6.8 2.01 1.81 7.0 29.7 27.0 7.2 2.12 1.92 7.6 32.3 30.0 7.6 2.24 2.03 8.0 34.0 32.0 Motorizing Draw Models 10 and 18 Models ll,,12,14,15,17,18 6,0 5.45 5.10 6.6 35.0 30.2 6.8 5.65 5.38 7.0 36.6 31.9 7.2 5.80 5.50 7.6 40.3 35.7 7.6 6.00 5.65 8.0 43.0 39.0 DISTRIBUTOR Rotation (vievied from top) Left Hand., Models 10, 11, 12, 18. Right Hand, Models 14, 15, 17. Make Auto Lite, all Models. Model IGW EO 5990, Models 10, 11, 12, 18. IGP 4008 A. Models 14, 15, 17. Cylinders 6 on Models 10, 11. 12, 18. 8 on Models 14, 15, 17. Timing Adjustable thru range of 3600 by loosening hold down clamp screw. Automatic Advance (flywheel)... 28º max., Models 10, 11, 12, 18. Engine (distributor shaft) 17 1/2º max., Models 14, 15, 17. 8

Distributor (Cont d) Control Vacuum advance and automatic, Models 10,11,12,18. Automatic on Models 14, 15,,17. End play.003" to.010" in drive shaft after coupling is pinned, all Models. Side play.005" in bearings. New bearings fitted.0005" min. to.00111 max. Condenser Located on outside of housing. Capacity.20 to.25 Mfd. Six Cylinder Eight Cylinder Breaker point gap.020".017" Cam Dwell or Angle 35º 31º closed, 14º open Breaker arm spring tension 17 to 20 oz,. 18 to 20 oz. Breaker points open 1/2" B.T.D.C. T.D.C. Firing order 1 5 3 6 2 4 1 6 2 5 8 3 7 4 Vacuum advance Models 10, 11, 12, 18: Advance Distribution Degrees Inches of Mercury NOTE. Flywheel degrees are Start advance 0º 7 ' double these figures. Intermediate advance 2º 7 3/4 Intermediate advance 4º 8 5/8 Intermediate advance 6º 9 3/8 Full advance 7.5º 10 Automatic advance Models 10, 11, 12, 18: Advance Distributor Degrees Distributor R.P.M. NOTE. Engine R.P.M. and Start advance 0º 300 flywheel degrees are Intermediate advance 3º 400 double these figures. Intermediate advance 7º 825 Intermediate advance 11º 1225 Full advance 14º 1580 Automatic advance Models 14, 15, 17: Distributor Advance Distributor Advance R.P.M. R.P.M. NOTE. Engine R.P.M. 300 0.0 1210 12.0 and flywheel 400 3.0 1345 13.5 degrees are 535 4.5 1480 15.0 double these 670 6.0 1615 16.5 figures. 800 7.5 1700 17.5 935 9.0 2000 17.5 1070 11.5 Flywheel teeth 134 Degrees to a tooth 2 2/3 VOLTAGE REGULATOR Make Auto Lite Open circuit voltage at battery 6.3 min. to 6.4 max. Model VRR 4001A (All Models) Armature speed at closing 825 RPM Ground Polarity Positive. Amperes to open 6 Amps. max. discharge Volts 6 Volt Car speed at closing 9.4 MPH 9

Voltage Regulator (Cont d) Circuit Breaker(cutout relay) Operating Voltage 7.1 to 7.4 Volts at 70º F Points close 6.4 to 7.0 Volts. Points open 6.0 Amps. at 6.3 Volts min. to 6.4 max SPARK PLUGS Make Champion Thread 14 mm Type J 9 Hudson Gap.032 IGNITION COIL Make Auto Lite, All Models Lock On primary circuit Location Dash in engine compartment. Lock cylinder location End of ignition coil cable. Model IG 4098, Models 10, 11, 12, 18 Lock cylinder removal By a spring type retainer CE 4029, Models 14, 15, 17 Lock key series H 601 H 1100. Amperage Draw All Models. Lock blank cylinders Tumblers are cut to match key. Engine Stopped 4.5 Amperes Engine Idling 2.5 Amperes STARTING MOTOR Make Auto Lite, all Models Brush spring tension 42 to 53 oz. Model MAZ 4092 All 6 cylinder Bearings Two Bronze bearings, MAB 4100 All 8 cylinder all Models Rotation CWDE all models End play 1/16, maximum Volts 6 Drive Bendix., inboard Left Hand all Models Solenoid switch location Top of starting motor. Diameter 4 All 6 cylinder Starting switch location Button on instrument panel. 4 1/2 All 8 cylinder. Test without load and with Bendix Model 10, 11, 12, 18: Test with Load and with Bendix Models 10, 11, 12, 18; Load in Ampere Draw Volts RPM Amps. Volts Foot Pounds RPM 70 5.5 4300 100 5.5.65 2500 200 5.0 2.55 1325 300 4.5 4.95 750 400 4.0 7.65 220 Test without load and with Bendix Models 10, 11, 12, 18: Load in Ampere Draw Volts RPM Amps. Volts. Foot Pounds 70 5.5 4300 260 2.0 4.3 380 3.0 7.75 540 4.0 12.2 10

Starter (Cont d) Test without load and with Bendix Models 14, 15, 17: Stall torque without switch Models 14, 15, 17: Load in Ampere Draw Volts RPM Amps. Volts Foot Pounds 60 5.5 3700 388 2.0 9.2 582 3.0 15.8 775 4.0 22.5 Test with load Models 14, 15, 17 Stall torque with switch Models 14, 15, 17 Load in Amps. Volts foot pounds RPM 375 2.0 8.7 100 5.5 0.7 2220 575 3.0 15.2 200 5.0 3.4 1240 750 4.0 21.5 300 4.5 6.4 795 400 4.0 9.65 450 BATTERY Make National Terminal Grounded Positive Number of Plates 6 Cylinder 17 Specific Gravity 1250 to 1290 @ 70º 8 Cylinder 19 Height of Water Level 3/8 above plates Dimensions: Six Cylinder Eight Cylinder Length 10 9/16 11 3/4 Width 7 1/4 7 1/4 Height 7 13/16 7 13/16 BULBS C. P. Base Voltage Mazda No. Headlamp Sealed Beam 6 8 Hood side panel 1 1/2 S.C. 6 8 55 Fender Lamp with direction indicator 21 S.C. 6 8 1129 Fender Lamp without direction indicator 3 S.C. 6 8 63 Stop and tail 21 3 D.C. 6 8 1154 License Lamp 3 S.C. 6 8 63 Dome 15 S.C. 6 8 87 Beam Indicator 1 S.C. 6 8 51 Ignition Lock 1 S.C. 6 8 51 Speedometer 1 1/2 S.C. 6 8 55 Radio 1 S.C. 6 8 44 Generator and Oil Indicator 1 1/2 S.C. 6 8 55 Direction Indicator 1 S.C. 6 8 51 Mechanical Clock 1 S.C. 6 8 51 Electrical Clock 1 S.C. 6 8 55 HORNS Twin Electric Model 10 Pass., 11, 12, 14, 15, 17 Twin Electric (Cont d) High Pitch Short horn Air gap low pitch.032 to.035 Low Pitch Long horn Horn relay points close 3 to 4 volts Diaphragm High pitch horn,.0195 thick Horn relay points open 2 volts across coil relay Diaphragm Low pitch horn,.015 thick in upright position. Air gap high pitch.026 to.030 Horn relay coil resistance 7.3 to 8.9 ohms @ 70º F 11

Horns (Cont d) Fuse 30 amp on dash under bonnet. Single vibrator Models 10 Traveler and Model 18 Adjustment is by fillister head screw at outer edge of cover do not move screw in center of cover. CLUTCH Engaging spring, Models 10, 11, 18, when compressed to 1 3/4 have a weight of 155 lbs., plus or minus 5 lbs. Models 14, 15, and 17 springs when compressed to 1 5/8 have a weight of 135 lbs., plus or minus 5 lbs. Inner springs when compressed to 1 5/8 have a weight of 80 lbs., plus or minus 5lbs. Clutch Finger Alignment Not over.005 Clearance Clutch Pressure Plate Warpage Not over.010 Clutch Throwout Finter 7/64 between bottom of finger Clutch Facing Cork and cover Clutch Pilot Bearing Ball Clutch Shifter Yoke 13/22 max. movement Clutch Throwout Bearing Ball Clutch lubricant 1/3 pint Hudsonite only. (Lubricate at Zerk fitting Fill at front of flywheel on right side of bell housing every 1000 miles. CLUTCH DIAMETER AND ENGAGING SPRINGS Model Clutch Outer Inner Diam. Spring Spring 10 all (exc with OD and 3 x 5 engine) 9 9 3 11 all and 10 with 3 x 5 engine 9 9 6 12, 18 and all 6 cylinder with overdrive 10 12 0 14, 15, 17 10 12 3 See torque tables for torque values for Clutch and Brake Pedal nuts, Clutch finger fulcrum nuts and clutch cover to flywheel bolts. Gear Ratios: TRANSMISSION Model 10 with All other models, 3 x 4 1/8 including model 10 engine: with 3 x 5 engine. 2.88 to 1 Low 2.61 to 1 1.82 to 1 Second` 1.65 to 1 1 to 1 High 1 to 1 3.5 to 1 Reverse 3.17 to 1 Teeth: Reverse Idler Main Drive Gear Main Drive Gear 2.88 to 1 2.61 to 1 18 17 17 Countershaft Gear Countershaft Gear Cluster Mainshaft Main Shaft Cluster 2.88 to 1 Cluster 2.61 to 1 ratio Low and Reverse Intermediate 26 25 32 External Helical 25 21 21 Spline 24 Internal Clutch 30 17 17 14 14 12

Transmission (Cont d) Bearings and Bushings: Main Drive Gear Ball Mainshaft Rear Ball Mainshaft Pilot Needle Roller Reverse Idler Steel Back Babbit Countershaft Gear Cluster Steel Back Babbit LUBRICANT Capacity of transmission is 2 1/4 pints or pounds if disassembled and parts washed. Capacity of transmission is 2 pints or pounds if drained and refilled. Capacity of transmission and overdrive is 3 1/2 pints or pounds if disassembled and parts washed. Capacity of transmission and overdrive is 3 1/4 pints or pounds if drained and refilled. OVERDRIVE SPECIFICATIONS Cut in speed (standard Main Drive Gear overdrive rear axle ratio) about 19 M.P.H. Final axle ratio in overdrive with standard axle Actual Axle Ratio Over all ratio in over drive : 4 7/8 to 1 3.52 to 1 4 5/9 to 1 3.28 to 1 4 1.9 to 1 2.96 to 1 REAR AXLE SPECIFICATIONS Type Semi floating Wheel Bearings Gear Type Helical bevel Type Taper Roller Pinion Bearings Adjustment Shim Type Taper Roller End Play.002".004" Adjustment Shim Pinion and Gear (Matched Gears) End Play.000".001" Adjustment Shim Differential Bearings Lash in Gears.0005".0035" Type Taper Roller Lubrication Adjustment Adjustment Nut Type Summer & Winter S.A.E. 90 E.P. Capacity in Lbs 2 3/4 lbs. (1.24 Kgs). GEAR RATIOS (WITHOUT OVERDRIVE) 4 1/9 4 5/9 4 7/8 Model 10 Pass. Cars Opt. Std. Opt. Model 10 Commercial Opt. Std. Opt. Model 11 Pass. Std. Opt. Model 17 Std. Opt. Model 12, 14, 15 Std. Opt Model 18, 5 Pass. Sedan Std. Opt Model 18, 7 Pass. Sedan Std. Opt Model 18 Commercial Std. GEAR RATIOS (WITH OVERDRIVE) 4 1/9 4 5/9 4 7/8 Model 10 Pass. Cars Opt. Opt. Std. Model 10 Commercial Opt. Opt. Std. Model 11 Pass. Opt. Std. Model 12, 17 Opt. Std. Model 12, 14, 15 Opt. Std Model 18, 5 Pass. Sedan Opt. Std. Model 18, 7 Pass. Sedan Opt. Std. Model 18 Commercial Opt. Std. 13

BRAKES Type used (all models) 4 wheel Bendix Hydraulic Lining (Cont d) Drum type Centrifuse Width 1 3/4 Drum Diameter: Thickness 7/32 Model 10, 11, 12, 18 10 Length per wheel 10 22 1/8 Model 14, 15, 17 11 Length per wheel 11 23 15/16 Rear Wheel Bearing: Lining area Sq. In. 10 155 Model 10TR, 10PA, 10DL Small (10 brake) Lining area Sq. In. 11 167 1/2 Model 10CM, 11, 12, 18 Large (10 brake) Adjustments: Model 14, 15, 17 Large (11 brake) Anchor Pin Radially Single 3 x 5 engine uses Large (10 brake) Lining clearance.0075 Lining Mechanical follow up 1 1/4 Primary Shoe Moulded Pedal to floorboard clear. 1/4 Secondary Shoe Woven SUSPENSION Caster 0º preferred Wheel Bearing Type Taper Roller +1/4º to ¼º permissible Wheel Bearing End Play.001 to.003 Camber 1/4º to 3/4º Tie Rod End Type Plain Bearing Max variation right and left Tie Rod Adjustment Turn Rod wheel caster or camber 1/2º Tie Rod Adjust. to increase Turn in direction of Toe In 0 1/16 of forward wheel travel Pivot Pin Inclination 4º 36 Tie Rod Adjust. to decrease Turn in opposite Toe out ±36 between wheels direction Spindle Pivot Pin Thrust Bearing Ball 14

H U D S O N MECHANICAL SPECIFICATIONS and ADJUSTMENTS 1942-1947 Models

I N D E X Model I.D. Data 3 Body Types and Weights 1942 Models 3 Body Types and Weights 1946-1947 Models 4 Propeller Shaft 4 Engine Specifications 5 Wheels and Tires 5 Tire Pressures 5 Chassis Dimensions 5 Camshaft 5 Camshaft Bearings 5 Connecting Rods 6 Spark Plug 6 Crankshaft 6 Pistons 6 Piston Pin 7 Piston Rings 7 Valve Locations 7 Valve Timing and Tappets 7 Valve Stem Guides 7 Compression Ratio 7 Inlet Valve 7 Exhaust Valve 8 Valve Spring Pressure 8 Lubrication System 8 Torque Specifications Engine 8 Torque Specifications Chassis 8 Cooling System 8 Fuel System 9 Carburetor Specifications WA1 454S 9 Carburetor Specs. WDO 501S 10 Carburetor Specs. WDO 502S 11 Exhaust System 11 Electrical System Generator 12 Regulator 12 Starting Motor 12 Starting Switch Solenoid 12 Distributor 13 Ignition Coil 13 Spark Plugs 13 Battery 13 Horns 14 Light Bulbs 14 Clutch General Specifications 14 Plate Size and Engaging Springs 14 Torque Specifications 14 Transmission Gear Ratios 15 Teeth 15 End Play 15 Speedometer Pinions 15 Governor Pinion 15 Bearings and Bushings 15 Rear Axle 16 Brakes 16 Front Suspension 16 Shock Absorbers 17 \ H U D S O N T E C H 2004

1942 1947 Hudson Mechanical Specifications and Adjustments MODEL IDENTIFICATION DATA MODELS SERIES 1942 1946 1947 Six 20T Six DeLuxe 20P Six Business Cars 20C Super Six 21 51 171 Commodore Six 22 52 172 Super Eight 53 172 Commodore Eight 24 54 174 Commodore Eight 25 Commodore Eight 27 Hudson Business Cars 28C 3/4 Ton Commercial 58 178 BODY TYPES AND WEIGHTS 1942 MODELS TRAVELER SIX SERIES 20T. 116" Wheelbase Serial Numbers 20 101 and upward. Engine 6 cylinder, 3" bore, 4 1/8" stroke, 21.6 A.M.A. HP, 175 cubic inches displacement. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Club Sedan 4 Door Sedan 2795 lbs. 2845 lbs. 2895 lbs. 2940 lbs. DELUXE SIX SERIES 20P. Wheelbase, Serial Numbers and Engine same as 20T. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Club Sedan 4 Door Sedan Convertible Sedan 2845 lbs. 2900 lbs. 2935 lbs. 2975 lbs. 3140 lbs. BUSINESS CARS SIX SERIES 20C, Wheelbase, Serial Numbers and Engine same as 20T. Cab Pickup Utility Coupe Utility Coach 2915 lbs. 2900 lbs. 2905 lbs. SUPER SIX SERIES 21, 121" Wheelbase Serial Numbers 21 101 and upward. Engine 6 Cylinder, 3" bore, 5" stroke, 21.6 A.M.A. HP, 212 cubic inches displacement. SUPER SIX SERIES 21 (Cont d) 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Club Sedan 4 Door Sedan Convertible Sedan Station Wagon 2925 lbs. 2895 lbs. 3035 lbs. 3080 lbs. 3200 lbs. 3315 lbs. COMMODORE SIX SERIES 22, 121" Wheelbase Serial Numbers 22 101 and upward. Engine same as Super Six 21. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Club Sedan 4 Door Sedan Convertible Sedan 2995 lbs. 3055 lbs 3100 lbs 3135 lbs 3280 lbs. COMMODORE EIGHT SERIES 24, 121" Wheelbase Serial Numbers 24 101 and upward. Engine 8 cylinder, 3" bore, 4 1/2" stroke, 28.8 A.M.A. HP, 254 cubic inches displacement. 3 Passenger Coupe 6 Passenger Club Coupe 2 Door Club Sedan 4 Door Sedan Convertible Sedan 3120 lbs 3205 lbs 3245 lbs. 3280 lbs. 3400 lbs. COMMODORE EIGHT CUSTOM COUPE SERIES 25, 121" Wheelbase Serial Numbers 25 101 and upward. Engine same as Commodore Eight 24. 6 Passenger Club Coupe 3235 lbs. COMMODORE EIGHT CUSTOM SEDAN SERIES 27, 128" Wheelbase Serial Numbers 27 101 and upward. Engine same as Commodore Eight. 4 Door Sedan 3395 lbs. SIX BIG BOY SERIES 28C, 128" Wheelbase Serial Numbers 28101 and upward. Engine same as Super Six 21. Cab Pickup 3040 lbs. 3

BODY TYPES AND WEIGHTS 1946 1947 Models SUPER SIX Series 51 and 171, 121" Wheelbase. Engine 6 cylinder, 3" bore, 5" stroke, 21.6 A.M.A. HP, 212 cubic inches displacement. 1946 1947 4 Door Sedan 3085 lbs. 3110 lbs. Brougham 3030 lbs. 3055 lbs. 3 Passenger Coupe 2950 lbs. 2975 lbs. Club Coupe 3915 lbs. 3040 lbs. Convertible Brougham 3195 lbs. 3220 lbs. COMMODORE SIX Series 52 and 172, 121" Wheelbase, Engine same as Series 51 and 171. 4 Door Sedan 3150 lbs. 3175 lbs. Club Coupe 3065 lbs. 3090 lbs. 3/4 TON COMMERCIAL Series 58 and 178, 128" wheelbase. Engine same as Series 51 and 171. Cab Pickup 3080 lbs. 3110 lbs. SUPER EIGHT Series 53 and 173, 121" Wheelbase. Engine 8 cylinder, 3" bore. 4 1/2" stroke, 28.8 A.M.A. HP, 254 cubic inches displacement. 4 Door Sedan 3235 lbs. 3260 lbs. Club Coupe 3185 lbs. 3210 lbs. COMMODORE EIGHT Series 54 and 174, 121 Wheelbase. Engine same as Series 52 and 173. 4 Door Sedan 3305 lbs. 3330 lbs. Club Coupe 3235 lbs. 3260 lbs. Convertible Brougham 3410 lbs. 3435 lbs. CHASSIS DIMENSIONS Over All Length Incl. Bumpers Over All Height 20 195 1/4 20T, 20P 68 21, 22, 24, 25 200 1/4 21, 22, 24, 25, 27 27 203 1/4 51, 52, 53. 54 68 3/4 51, 52, 53, 54, 171, 172, 173, 174 171, 172, 173, 174 207 20C, 28C, Cab Pickup 81 58, 78 214 20C 90 3/4 Over All Width Incl. Fenders Road Clearance All 1942, 1946, 1947 FRONT REAR SERIES FRONT REAR 71 72 3/4 20T 9 1/4 8 20P, 21 9 5/8 8 3/8 Tread 22, 24 9 3/4 8 1/2 All Models, 1942, 1946, 1947 56 1/4 59 1/2 25, 27 9 5/8 8 7/8 51, 53, 171, 173 9 5/8 8 3/8 Turning Radius 52, 54, 58, 172, 174, 178 9 3/4 8 1/2 20T, 20P, 20C 20 8 21, 22, 24, 25, 51, 52, 53, 54 21 1 27, 28C, 58, 171, 172, 173, 174, 178 21 10 MODEL PROPELLER SHAFT LENGTH C. TO C. OF JOINT LENGTH OF SHAFT ONLY 20, 21, 22, 24, 25, 51, 52, 53, 54, 181, 172, 173, 174 without overdrive 58 7/16 55 23/32 20, 21, 22, 24, 25, 51, 52, 53, 54, 181, 172, 173, 174 with overdrive 51 1/8 48 13/32 27, 28, 58 CM 78 CM with overdrive 58 1/16 55 11/32-4 -

WHEELS AND TIRE SPECIFICATIONS MODEL WHEEL SIZE TIRE SIZE 20T 16 x 3.50 Standard 6.40 x 16 20P 16 x 4.00 Standard 6.00 or 6.50 x 16 20P, 21, 22, 24 51, 53, 171, 173 16 x 4.50 Standard 6.00, 6.25 x 16 20C, 28, 58, 78 16 x 4.50 Standard 6.00, 6.25 X 16 20T, Utility Coupe, Utility Coach, 58, 78 16 x 4.50 Optional 6.00, 6.50 x 16 Truck Air Wheel 25, 27, 52, 54, 172, 174 15 x 5.00 Standard 6.50 or 7.00 x 15 Pass. or Truck Air Wheel 21, 22, 24, 28, 51, 53, 171, 173 15 x 5.00 Optional 6.50 or 7.00 x 15 Pass. or Truck Air Wheel TIRE PRESSURES TIRE SIZE FRONT (LBS) REAR (LBS) COLD HOT COLD HOT 5.50 x 16 32 35 32 35 6.00 x 16, 4 and 6 ply 26 29 30 33 6.00 x 16, Truck Air Wheel (Opt.) 26 29 40 44 6.50 x 16 Truck Air Wheel (Opt.) 26 29 40 44 6.25 x 16 26 29 30 33 6.50 x 16 (Opt.) 26 29 30 33 6.50 x 15 26 29 30 33 7.00 x 15 26 29 30 33 Mounting and General ENGINE SPECIFICATIONS Mounting Type Rubber 3 points Displacement Bore 3 3 x 4 1/8 6 cyl. 175 cubic inches Stroke Series 20 4 1/8 3 x 5 (6-Cyl.) 212 cubic inches Series 21, 22, 51, 52, 171, 3 x 4-1/2 (8-Cyl.) 254 cubic inches 172 and 178 5 All Eight Cylinder 4-1/2 CAMSHAFT Gear Material Phenolic (1942) Timing Gear Lash.002" to.004 Aluminum (1946) - 5 -

CAMSHAFT BEARINGS Type Steel backed, Bermax lined Radial Clearance.002" to.0025 Diameter and Length 6 Cylinder 8 Cylinder No. 1 2.000" x 1 1/4" No. 1 2.029 x 1 3/8 No. 2 1.968" x 1 1/16" No. 2 1.998 x 1 1/16" No. 3 1.5625" x 11/16" No. 3 1.966 x 1 1/4 No. 4 1.9355 x 1 1/16 No. 5 1.498 x 1 5/16 CONNECTING RODS Material Forging Steel Lower End Bearing (cont d) Weight Radial Clearance.001 3 x 4 1/8 engine 30 3/4 oz. End Play.007 to.013 All Other Models 30 oz. Material Bearing Alloy Length Center to Center 3 x 4 1/8 engine 8 5/8 Upper End Bearing All Other Models 8 3/16 Inside Diameter ¾ Lower End Bearing Length 15/16 Inside Diameter 1.937 Clearance on Pin.0003 Length 1.375 Material Bronze SPARK PLUG Champion J9 (Hudson 14 M.M.) CRANKSHAFT Type Fully compensated Bearing Material Bearing alloy Bearings End play taken by Center bearing 6 Cylinder 3 Radial clearance.001 8 Cylinder 5 Bearing Diameter and Length 6 Cylinder 8 Cylinder No. 1 2.343 x 1.625 No. 1 2.281 x 1.625 No. 2 2.375 x 1.750 No. 2 2.312 x 1.375 No. 3 2.406 x 2.375 No. 3 2.343 x 1.875 No. 4 2.375 x 1.375 No. 5 2.406 x 2.000 Bearing End Play.006".012" Adjustment Type None PISTONS Type Cam ground Clearance: Material Lo Ex aluminum alloy Skirt.001" to.002" Weight 10.5 oz. Top of Piston.016" Length 3 3/16" Depth of Grooves 5/32" Pin Center to Top 1 11/16" Piston Pin Hole Size.750" - 6 -

PISTON PIN Type Floating Length 2 7/16" Method of Locking snap rings Fit in Piston (At 200º.).0003" Diameter.750" Fit in rod.0003" PISTON RINGS Material Cast iron Oil Rings Joint Type Straight cut and pinned Number Used 2 Compression Rings: Width Upper.3/16" Number Used 2 Width Lower 3" x 5": Width 3/32" 6 Cylinder,8 Cylinder 5/32" Width Lower 3" x 4 1/8" 6 Cyl. 3/16" VALVE LOCATIONS (From the Front) 6 Cylinder Intake 2 4 5 8 9 11 8 Cylinder Intake 2 3 6 7 10 11 14 15 6 Cylinder Exhaust 1 3 6 7 10 12 8 Cylinder Exhaust 1 4 5 8 9 12 13 16 VALVE TIMING and TAPPETS 1942 Models 21, 22, 28 Six 3" x 5". 1942 Model 20 Six Cylinder 3" x 4 1/8" (With Unmarked Valve Cover Plates.) 1942, 1946, 1947 All Eight Cylinder Models. Tappet Clearance, Inlet.006" Tappet Clearance, Exhaust.008" Intake Opens 10º 40' B.U.D.C. Exhaust Opens 50º BLDC Intake Closes 60º A.L.D.C. Exhaust Closes 18º 44' AUDC 1942 Model 20, 3" x 4 1/8" with Valve Covers Marked.010" and.012". 1946 and 1947 All Six Cylinder Models 51, 52, 58, 171, 172,and 178. Tappet Clearance, Inlet.010" Tappet Clearance, Exhaust.012" Intake Opens 27º 30' BUDC Exhaust Opens 51º 50' BLDC Intake Closes 68º 10' ALDC Exhaust Closes 32º 10' AUDC Tappet in Guide.0002" to.0018" VALVE STEM GUIDE 6 Cyl. Sets 1 1/16" below top of cylinder block. 8 Cyl. Sets 1 5/16" below top of cylinder block. Length 2 9/16" COMPRESSION RATIO 3" x 4 1/8" 6 Cylinder 7 1/4 to 1 All Other Models 6 1/2 to 1 INLET VALVE Material Silicon steel Overall Length Head Diameter Overall 6 Cylinder 5 11/32" 6 Cylinder 1 3/8" 8 Cylinder 5 3/32" 8 Cylinder 1 1/2" Stem Diameter.341" Lift.343" Stem Clearance.0015" to.003" 7

EXHAUST VALVE Material XB Silichrome steel Head Diameter 1 3/8" Lift...343 Overall Length 6 Cylinder 5 11/32" 8 Cylinder 5 3/32" Stem Diameter.339" Stem Clearance.003" to.005" At 2 VALVE SPRING PRESSURE Type Pump Type Pump Drive Oil Filter Screen 34 to 40 lbs. LUBRICATION SYSTEM Duo Flo Automatic Oscillating plunger Worm on Camshaft 40 mesh TORQUE SPECIFICATIONS ENGINE (Ft. Lbs.) Connecting Rod Bolt 40 45 Water Jacket Cover Bolt 20 30 Cylinder Head Studs Oil Pan 15 20 6 Cylinder 40 45 Timing Gear Cover 15 20 8 Cylinder 45 50 Camshaft Gear Bolt 20 30 Main Bearing Bolts 70 80 Cylinder Support Plate 20 30 Flywheel to Crankshaft Bolts 40 45 Intake Manifold 15 20 Front Engine Support Bolts 40 45 Exhaust Manifold 20 30 Spark Plugs 25 30 Cylinder Head Water Outlet 20 30 TORQUE SPECIFICATIONS Chassis FT. LBS. FT. LBS. FT. LBS. Propeller Shaft 20 Front engine support bolt 40 Steering center arm bolt nut 60 Clutch and brake pedal rod nuts 20 Clutch cover to flywheel bolts 20 Water jacket cover bolt 12 Brake anchor pin nuts 80 Steering wheel nuts 20 Oil pan 15 Clutch finger fulcrum nuts 40 Wheel nut 60 Timing gear cover 15 Connecting rod bolt nuts 40 Rear axle shaft nut 90 Camshaft gear bolt 20 Cylinder head studs 6 cylinder 40 Rear spring clip nuts 55 Cylinder support plate 20 Cylinder head studs 8 cylinder 45 Spark Plugs 28 Intake manifold 15 Main bearing bolts 75 Steering arm nut 100 Exhaust manifold 20 Flywheel to crankshaft bolts 40 Differential carrier nuts 35 Cylinder head water outlet 20 Steering spindle support arm (lower) pivot to frame bolt 60 COOLING SYSTEM Water Circulation Centrifugal pump Pump Capacity 30 gpm at 50 mph Water Capacity Complete System Radiator Cellular 6 Cylinder 13 Quarts Thermostat Location Cyl. head water outlet 8 Cylinder 18 Quarts Thermostat Used Model 25, 27, 54, 174 By pass type Water Pump Drive V Belt Thermostat Used All Others Choke type Fan Drive Pump shaft Thermostat Begins to Open 150º to 155º 8

Torque Specs Chassis (Cont d) Belt Adjustment Generator mounting Thermostat Fully Open 185º Water Pump Bearings Bronze Temperature Gauge Electric Type Pump Lubrication Grease fitting Water Pump Impeller 6 blade FUEL SYSTEM Carburetor Make Carter Mechanical Pump Driven Carburetor Type Down draft from Camshaft By Cam Air Cleaner and Silencer Manifold Heat Control Oil wetted Standard A C Models 20, 28 Manual Oil Bath Optional United All Others Automatic Gasoline Tank Capacity Choke Control Automatic Models 20T, 2OP, 20 Utility Fuel Delivery Mech. or elec. pump Coach, 20 Utility Coupe 12 1/2 gallons All Others 16 1/2 gallons CARBURETOR SPECIFICATIONS Carter WA1 454S (Models 40, 48, 10, 18, 20, 28 w/175 CID Motor) Dimensions 1 1/4" Single, SAE flange. Primary venturi 11/32" I.D. Secondary venturi 11/16 I. D. Main venturi 1 1/4 I. D. Float Height Distance from seam on float at free end to tip on lower edge of float chamber cover to be 3/8" when needle is seated. Outside Vent No. 10 drill. No inside vent. Gasoline Intake Square vertical needle No. 48 drill in needle seat. Gasoline Line Connection 5/16" Weatherhead nipple. Low Speed Jet Tubes Jet No. 70 drill size. By pass in body No. 53 drill size. Economizer in body.0755".0765" diameter. Idle bleed No. 50 drill size. Idle Port Length 0.165" Width 0.032". Idle Port Opening 0.122" above valve with valve closed tightly. Idle Screw Beat No. 46 drill. Set Idle Adjustment Screw 1/2 to 1 1/2 turns open. For richer mixture turn screw out. Do not idle engine below 600 rpm which is equivalent to 6 to 8 mph in high gear. Main Nozzles In primary venturi, angle 45º closed tip. Inside diameter No. 30 drill. Upper hole No. 75 drill on 45º angle. Lower hole No. 48 drill on 45º angle. Metering Rod Specifications (454S Single Carburetor) Economy Step Middle Step Length Type Diam. Tapers from of Taper Standard.072.072 to.064 1/8 1 st Leaner.074.074 to.066 1/8 2 nd Leaner.076.076 to.068 1/8 3 rd Leaner.078.078 to.070 1/8 Diam..044.046.048.050 Power Step Length of Taper 1/32 1/32 1/32 1/32 Length of Step 21/64 21/64 21/64 21/64 Metering Rod Jet 0.096" diameter drill. Metering Rod Setting Use gauge No. J 1265 (2.468"). Accelerating Pump Low pressure type with adjustable stroke. Discharge jet No. 70 drill size. Intake ball check No. 62 drill size. Discharge ball check No. 45 drill size. Relief passage (to outside) No. 42 drill. - 9 -

Carburetor WA1-454S (Cont d) Pump Adjustment Vacuum Spark Port 3/16" plunger travel in short stroke. 0.039" to 0.041" diameter. Bottom of port 0.021" to 0.0291 above valve. Next 3 items are based on viewing carburetor with flange down and float chamber at the right. Throttle Lever Choke Fast Idle and Unloader At left. Length 1 1/4", in center of travel. Points toward you. Carter Climatic Control, on left side. Set at center index. On left side. Carter WDO 501S (1941 Ser. No. 2150 up; 1942 1947 all six 3 x 5 engines) Dimensions 1" Dual 4 bolt flange Primary venturi 11/32" I.D. Secondary venturi 21/32" I.D. Main venturi 1 1/16" I.D. Float Level Distance from float to bowl cover to be 1/8" when needle is seated. Outside Vent No. 10 Drill size 4 holes. No inside vent. Gasoline Intake S quare vertical needle. No. 38 drill hole in needle seat. Gasoline Connection 5/16" Weatherhead nipple. Low Speed Jet Tubes Jet size No. 71 drill. By pass (plug) No. 51 drill. Economizer in body No. 56 drill. Idle Bleed No. 54 drill. Idle Port Length 0.150". Width 0.030". Idle Port Opening 0.108" to 0.112" above valve with valve tightly closed. Lower Port (For Idle Adj. screw) 0.0615" to 0.0655" diameter. Set Idle Adjustment Screw. 1/2 to 1 1/2 turns open. For richer mixture turn screw out. Do not idle engine below 600 rpm which is the equivalent of 6 to 8 mph in high gear. Main Nozzle In primary venturi, angle 45º. Closed tip. Inside diameter No. 30 drill. Top hole No. 70 drill on 45º angle. Metering Rod Specificatons (501 Duplex Carburetor Economy Step Middle Step Length Type Diam. Tapers of from Taper Standard.0615.0615-.057 3/16 1 st Leaner.0625.0625-.058 3/16 2 nd Leaner.0635.0635-.059 3/16 3 rd Leaner.0645.0645-.060 3/16 Diam..047.048.049.050 Power Step Length of Taper 1/64 1/64 1/64 1/64 Length of Step.147.147.147.147 Lower hole No. 52 drill on 60º angle on early production units, No. 51 drill on late production units. Metering Rod Jet 0.082". Metering Rod Setting Use gauge J 1305 (2.280"). Accelerating Pump Pump Adjustment Vacuum Spark Port Choke Valves High pressure type spring operated lever, with adjustable pump stroke. Discharge jets No. 74 drill. Intake ball check No. 40 drill. Discharge needle seat No. 50 drill. Relief passage (to outside) thru slots in air horn. 9/32" plunger travel in long stroke. 0.039" to 0.041" Top of port 0.029" to 0.033" above valve. In air horn. Offset butterfly type. Next 4 items are based on viewing carburetor with flange down and float chamber in rear. Throttle Lever Adjusting, on right side. Length 3/4". Choke Climatic control on left side. Set one point lean. Choke Heat Suction Holes Location, in body. Size No. 34 drill. Fast Idle and Unloader On right side. 10

Carburetor Specs (Cont d) Carter WDO 502S (Used On 8 Cylinder Engines) Dimensions 1 1/4" Dual 4 bolt flange Primary venturi 11/32" I.D. Secondary venturi 19/32" I.D. Main venturi 1 37/16" I.D. Float Level Distance from float to bowl cover to be 1/8" when needle is seated. Outside Vent No. 10 drill size. 4 holes. No Inside vent. Gasoline Intake Square vertical needle. No. 38 drill hole In needle seat. Gas Line Connection 5/16" Weatherhead nipple. Low Speed Jet Tube Jet size No. 69 drill. By pass (plug) No. 51 drill. Economizer In body No. 56 drill. Idle bleed No. 54 drill. Idle Port Length 0.175" Width 0.030". Idle Port Opening 0.133" to 0.137" above upper edge of valve with valve tightly closed. Lower Port (For Idle Adj. Screw) 0.0615" to 0.0655" diameter. Idle Screw Seat No. 52 drill. Set Idle Adjustment Screw. 1/2 to 1 1/2 turns open. For richer mixture, turn screw out. Do not idle engine below 600 rpm or 6 to 8 miles per hour in high gear. Main Nozzle In primary venturi, angle 45º. Closed tip. Inside diameter No. 30 drill. Top hole No. 70 drill on 45º angle. Lower hole No. 52 drill on 60º angle. Metering Rod Specifications (502S Duplex 8 Carburetor) Economy Step Middle Step Length Type Diam. Tapers from of Taper Standard.061.061.055.141 1 st Leaner.062.062.056.141 2 nd Leaner.063.063.057.141 3 rd Leaner.064.064.058.141 Diam..044.045.046.047 Power Step Length of Taper 1/64 1/64 1/64 1/64 Length of Step.162.162.162.162 Metering Rod Jet 0.086" drill. Metering Rod Setting Use gauge J 1305 (2.280"). Accelerating Pump High pressure type (spring operated lever) with adjustable pump stroke. Discharge jets No. 74 drill. Intake ball check No. 40 drill. Discharge needle seat No. 50 drill. Relief passage (to outside) thru slots In air horn. Pump Adjustment 9/32" plunger travel (In long stroke). Vacuum Spark Port None. Choke Heat Suction Hole Location, in body. Size No. 34 drill. Choke Valve In air horn. Offset butterfly type. Next 3 items are based on viewing carburetor with flange down and float chamber in the rear. Throttle Lever Choke Fast Idle and Unloader Adjusting, on right side. Length 1 1/4", in center of travel. Points up. Climatic control on left side. Set one point lean. On right side. EXHAUST SYSTEM Muffler Six Cylinder Inlet 2 Outlet 1 1/2 Muffler Eight Cylinder Inlet 2 Outlet 1 7/8 11

Generator Make Auto Lite Volts 6 Models, Standard GDS 4801A GEC 4801A Models, Optional GEA 4803B GEB 48023B GEG 4801A Number of Brushes Models GDS, GEC 3 Models GEA, GEB, GEG 2 Number of Poles 2 Ground Polarity Positive Rotation, Viewed Drive End Clockwise Drive Fan belt Current Control, Standard Generator 3rd Brush Voltage Control, Standard Generator Vibrating regulator Current And Voltage Control, ELECTRICAL SYSTEM SPECIFICATIONS Ground Polarity Regulator Positive Model Used With Generator GDS 4801A VRR 4001A Generator GZA 4803B VRP 4008B Generator GEB 4802B 2 VRP 4008D Generator GEC 4801A VRR 4001A Generator GEG 4801A VRP 4008A Voltage Regulator Setting @110 Amperes Rate,110º F 7.1 7.4 volts Current Regulator Setting VRP 4008A 39 41 amperes VRP 4008B 34 36 amperes VRP 4008D 34 36 amperes Carbon Resistors On Base, Total Resistance Optional Generator Vibrating regulator VRP 4008A 75 ohms Fuse None VRP 4008B 45 ohms Bearing, Drive End Ball VRP 4008D 75 ohms Bearing, Commutator End Models GEB, GEG Ball VRR 4001A 30 ohms Models GDS, GEA, GEC Absorbent bronze Starting Motor Bearing Clearance 0.001 0.0025 Bushing Bore, Installed 0.626 0.627 Make Auto Lite Armature End Play 0.003 0.010 Volts 6 Brush Spring Load, Ounces Models GEB, GEG 64 68 Models MAB 4100 MZ 4092 Models GDS, GEA, GEC 35 53 Poles 4 Field Draw Total, @ 6 Volts GDS 4801A 1.65 1.82 Brushes Brush Spring Load, Ounces 4 42 53 GEA 4803B 1.57 1.75 Bearings Absorbent bronze GEB, GEC, GEG 1.60 1.78 Maximum End Play 1/16" Motorizing Draw @6 Volts (Field Terminal Grounded to Frame) Transmission, (Drive) No Load Draw, Minus Switch Bendix inboard GDS 4801A 5.10 5.45 MAB 4100 @,5.5 Volts, 3700 RPM, 60 amperes GEA 4803B 4.45 4.90 MZ 4092 @ 5.5 Volts, 4300 RPM, 70 amperes GEB 4802B 4.00 4.50 Stall Torque, Minus Switch GEC 4801A 4.85 5.40 MAB 4100 @ 3 Volts, 580 Amps. 15.8 f t. lbs GEG 4801A 4.70 5.20 MZ 4092 @ 3 Volts, 420 Amps.. 7.8 ft. lbs. Maximum Output @ 8 Volts GDS 4801A @ 1250 rpm 34 Starting Switch Solenoid GEA 4803B @ 1600 rpm 35 Contacts Close 3 4 volts GEB 4802B 2 @ 1300 rpm 35 Contacts Open 0.5 1.025 volts GEC 4801A @ 1290 43 Voltage Drop Per 100 Amps. 0.40 volts GEG 4801A @ 1550 rpm 40-12 -

Distributor Distributor (Cont d) Make Auto-Lite Vacuum Advance Curve Stated Volts 6 in Distributor Degrees and Hg. Abs. Models 6 Cylinder IGW-4203A IGW-4203A Models 8 Cylinder IGP-4008A 6-3/4 Hg. Abs. 0º Rotation Viewed From Top 7-5/8 Hg. Abs. 2º IGP-4008A, B Clockwise 8-1/2 Hg. Abs. 4º IGW-4203A Counter-clockwise 9-3/8 Hg. Abs. 6º Type Automatic Control 10 Hg. Abs. 7.5º IGP-4008A, B Centrifugal Breaker Arm Spring 17-20 oz. IGW-4203A Centrifugal and vacuum Cam Dwell, Degrees Governor Advance Curve Stated IGP-4008A, B, 27.5 In Distributor Degrees and RPM IGW-4203A 35 IGP-4008A, B Rotor Shaft Side Play.005 300 RPM Rotor Shaft End Play.003 -.010 400 RPM 0º Contact Gap 850 RPM 3º IGP-4008A, B.017 1300 RPM 8º IGW-4203A.020 1700 RPM 9º Flywheel Teeth IGP-4203A Degrees to a Tooth 2-2/3 400 RPM 0º 700 RPM 3º 1000 RPM 6º 1300 RPM 9º 1570 RPM 11.75º Ignition Coil Make Auto-Lite Lock Cylinder Location End of coil Location Engine side of dash cable Model 6 Cylinder IG-4098 Lock Cylinder Removal Spring type Model 8 Cylinder CE-4029 retainer Amperage Draw Lock Key Series H601 to H1100 Engine Stopped 4.5 Lock Blank Cylinders Tumblers cut to Engine Idling 2.5 match key Spark Plugs Make Champion Thread 14 mm Model J-9 or J-7 Gap.032 Battery Make National Dimensions 6 Cylinder Number of Plates Length 10-1/2 6 Cylinder 51 Width 7-1/8 8 Cylinder 57 Height 7-13/16 Terminal Grounded Positive Dimensions 8 Cylinder Water Level Above Plates 3/8 Length 11-3/4 Width 7-1/4 Height 7-13/16-13 -

Horns Twin Electric Air Type Used on All Passenger Cars Air Gap Low Pitch.023 -.031 High Pitch Short Horn Relay Points Close 3 4 volts Low Pitch Long Horn Relay Points Open 2 volts Diaphragm Thickness Relay Coil Resistance High Pitch.0195 @ 70º F 7.3 8.9 ohms Low Pitch.015 Fuse Location On Dash Under Hood Air Gap High Pitch.025 -.027 Fuse Size 30 Ampers Single Vibrator Type Used On Commercial Cars Adjustment Screw Located Outer edge of cover Light Bulbs (6 Volt) Mazda No. Candlepower Headlamp, Domestic 40/30 watts Sealed Beam Headlamp, Export 54/20 watts Sealed Beam Hood Side Panel 55 2 Hood Ornament 55 2 Ignition Lock 55 2 Speedometer, Cars with Inst. Light, Rheostat 55 2 Speedometer, No Rheostat 51 1 Clock 55 2 Fuel Gauge, Cars with Inst. Light, Rheostat 55 2 Fuel Gauge, No Rheostat 51 1 Glove Compartment Accessory 55 2 Generator and Oil Telltale 51 1 Direction Indicator Telltale 51 1 Light Beam Indicator 51 1 Fender Lamp with Turn Indicator 1158 21-3 Fender Lamp without Turn Indicator 63 3 License Plate Lamp 63 3 Radio 51 1 Courtesy and Dome All Models 88 15 Fog Lamp, Accessory 4015A Sealed Beams Spot Lamp, Accessory 1209S 32 Tail and Stop Lamp All Passenger Cars 1154 21-3 Tail and Stop Lamp All Commercial Cars 1158 21-3 CLUTCH General Pedal to Floorboard Clearance 1-1/2 Number of Corks (Cont d) Type Wet 10 Clutch 108 Fluid Used Hudsonite Type of Pilot Bearing Ball Number of Driving Plates One Type of Throwout Bearing Ball Plate Facing Corks Number Engaging Fingers 3 Number of Corks Plate Diameter 9 and 10 9 Clutch 90-14 -

Clutch (Cont d) Plate Size and Engaging Springs Series With Standard Drive With Drive Master, Overdrive or Vacumotive Drive 20 with 3 x 4-1/8 Engine, 9 Plate 3 inner 9 outer 20, 21, 51, 53, 54, 173, 174 10 Plate 0 inner 12 outer 20 with 3 x 5 Engine 21, 51, 52, Engaging Spring Tension Lbs. 171, 172 9 Plate 6 inner 9 outer Inner All @ 1-5/8 (Spring 155224) 135-145 All 22, 28, 58, 178 also Police and Outer 9 Plate @ 1-3/4 (Spring 45148 or Taxi Opt l. Also approx 2500 51, 52 166250) 165-175 10 Plate 0 inner 12 outer Outer 10 Plate @ 1-5/8 (Spring 45149 24, 25, 27, 53, 54, 173, 174 10 Plate 3 inner 12 outer 166251) 180-190 Torque Specifications, Ft. Lbs. Throwout Finger Retainer Nuts 40-45 Housing Screws and Bolts 40-45 Cover Cap Screws 20-25 Flywheel Flange Bolts 20-25 Cover Driving Lug Nuts 40-45 TRANSMISSION 1942 thru 1947 Gear Ratios End Play (Cont d) 2.88 to 1 Low Mainshaft Intermediate Gear and 1.82 to 1 Second and Synchronizer Shift Sleeve.003 to.016 1 to 1 High Reverse Idler Gear.003 to.010 3.5 to 1 Reverse Speedometer Drive Gear 10 Teeth Teeth Speedometer Pinions Reverse Idler 18 Teeth Axle Ratio Tire Sizes Teeth Main Drive Gear 4 1/9 All 15 2.88 to 1 Ratio 17 Teeth 4 5/9 6.25x15, 6.50x16, 7.0x15 16 2.61 to 1 Ratio 17 Teeth 4 5/9 5.50x16, 6.00x16, 6.50x15 17 4 7/8 6.50x16, 7.00x15 17 Countershaft Gear Cluster 4 7/8 5.50x16, 6.00x16, 6.25x16, 2.88 to 1 Ratio 26 Teeth 6.50x16 18 21 Teeth 17 Teeth Governor Pinion 14 Teeth 4 1/9 Axle Ratio All Tire Sizes 15 Teeth Mainshaft Low and Reverse 32 Teeth External 4 5/9 or 4 7/8 Axle Ratio All Spline 24 Teeth Internal Tire Sizes 17 Teeth Mainshaft Intermediate Helical 25 Teeth Bearings and Bushings Clutch 30 Teeth Mainshaft Drive Gear Ball End Play Mainshaft Pilot Needle Roller Mainshaft Rear Ball Countershaft.006 to.016 Reverse Idler Gear Steel Back Babbitt Countershaft Gear Cluster Steel Back Babbitt - 15 -

REAR AXLE Specifications Type Semi Floating Wheel Bearings (Cont d) Gear Type Helical Bevel Adjustment Shim Pinion Bearings End Play.002.004 Type Taper Roller Pinion and Gear (Matched Gears) Adjustment Shim (Ratio stamped on outside of differential carrier End Play.002 -.004 and cap assy. Right hand side at bolt circle.) Differential Bearings Adjustment Shim Type Taper Roller Lash in gears.0005.0035 Adjustment Adjustment Nut Lubrication Wheel Bearings Type Summer and winter S.A.E. 90 EP Type Taper Roller Capacity in pounds 2 3/4 lbs. Rear Axle Usage with 10 Brakes Small Rear Wheel Bearings Series 10TR, 10PA, 10DL, 20T, (exc. Utility Coach, Utility Coupe,) 20DL, 20P, exc. 3x5 engine and 11 brakes Larger Rear Wheel Bearings Series 10CM, 11, 12, 18, 20C (exc. with 3x5 engine), 20P with 3x5 engine, 20T, Utility Coach, Utility Coupe, 21, 22, 28C, 28P and with 11 brake all models thru 1947 with 10 brake. Rear Axle Usage with 11 Brakes Series 14, 15, 17, 20P, 24, 25, 27, 28P and all models thru 1947 with 11 brake. BRAKES Type used (all models) 4 wheel Bendix hydraulic Lining Area In Square Inches Drum Type Centrifuse 10 brake 155 sq. in Drum Diameter 10 11 brake 167 1/2 sq. in Series 20P, 20T, 20DL, 20C (exc. with 3x5 engine), 21, 22, 23, 28C, 51, Adjustments 52, 171 and 172. Anchor Pin Radially Single Drum Diameter 11 Anchor Pin Nut Torsion Wrench Series 24, 25, 27, 28P, 53, 54, 58 Tighten to 80 Ft. Lbs. 174 and 178. Lining clearance.0075 Length per Wheel Mechanical follow up 1 7/16 10 brake 22 1/8 Pedal to floor board clearance ¼ 11 brake 23 15/16 FRONT SUSPENSION Front Rear Caster 1/2º to 1 1/2º at Curb Height 4 7/16 4 13/16 Camber 1/2º to 1 1/2º at Curb Height 4 7/16 4 13/16 Max. variation between right and left wheel caster or camber 1/2º Toe in 0 to 1/16 measured at wheel rim Pivot Pin Inclination 4º 36 Toe Out Variation +/ 30 between wheels Spindle Pivot Pin Thrust Bearing Ball Wheel Bearing Type Taper Roller - 16 -

Front Suspension (Cont d) Wheel Bearing End Play.001 to.003 Tie Rod End Type Plain Bearing Tie Rod Adjustment Turn rod to right or left Tie Rod Adjustment To Increase Turn in direction of forward wheel travel Tie Rod Adjustment To Decrease Turn in opposite direction Steering center arm bolt nut Tighten to 60 foot pounds Steering arm nut torque 100 Ft. Lbs. SHOCK ABSORBERS 1942 Models SERIES BODY TYPE FRONT REAR MFR. SCALE 20T, 20P, 21 Exc. Coupes and Station Wagon 164786 164787 Monroe Light 20, 21 3 P. Coupe, Club Coupe 164545 164546 Monroe Light 22 Exc. 3 P. Coupe, Club Coupe, 27 162032 160110 Delco Light 24 Exc. 3 P. Coupe, Club Coupe, 27 162032 160110 Delco Light 22, 24 3 P. Coupe, Club Coupe, 25 164547 164548 Monroe Light 28 All 1942 160106 Delco Heavy Note: Part number 160106 shock absorber assembly front, used with optional heavy scale springs on all 1942 cars. Part number 160110 shock absorber assembly rear, used with optional heavy scale springs on all 1942 cars exc. Cab, Cab Pickup 1946 Models SERIES BODY TYPE FRONT REAR MFR. SCALE 51 Exc. 3 P. Coupes, Club Coupe 16754 165755 Monroe Light 51 3 P. Coupe, Club Coupe 165750 165751 Monroe Light 52, 53, 54 Exc. 3 P. Coupe, Club Coupe 165875 165871 Delco Light 52, 53, 54 3 P. Coupe, Club Coupe 165873 165871 Delco Light 58 All 165874 Delco Heavy Note: Part number 165874 shock absorber assembly front, used with optional heavy scale front and rear springs. Part number 165871 shock absorber rear, used with optional heavy scale front and rear springs. 1947 Models SERIES BODY TYPE FRONT REAR MFR. SCALE 171S, 171P, 171SP 3 P. and 4 P. Coupe 166572 166573 Monroe Light 171, 171P, 171SP Exc. 3 P. and 4 P. Coupe 166574 166575 Monroe Light 172, 173, 174 3 P. and 4 P. Coupe 165873 165870 Delco Light 172, 173, 174 Exc. 3 P. and 4 P. Coupe 165875 165871 Delco Light 170CM, 171CM, 178CM 165874 Delco Heavy Note: Monroe shock absorbers bearing numbers 166572, 166573, 166574 and 166575 are permanently sealed type and cannot be serviced except as an assembly. 17

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H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS 1940-1942 (All Hudson Models)

H U D S O N T E C H 2004

H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS 1940 HUDSON 6 - Model 40

H U D S O N T E C H 2004

1940 Hudson Tune-Up Specifications Model 40 MODEL IDENTIFICATION SERIAL NUMBER: 40T Traveler 40-101 40P Deluxe 40-101 40C Business Cars 40-101 On plate on right front door hinge pillar post. ENGINE NUMBER:--Same as Serial Number (above). Stamped on top of cylinder block between #1 & #2 exhaust manifold flanges. TUNE-UP COMPRESSION: Ratio 7.0-1. Pressure - 125 lbs. (7.0-1) at cranking speed of 125 RPM. VACUUM READING: Steady 18-21" idling at 7 MPH. FIRING ORDER: 1-5-3-6-2-4. See diagram. SPARK PLUGS: Champion Type J-8.14 mm. Metric. Gaps -.032" IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.020" Cam Angle 35º (closed). Automatic Advance - 14º max. at 1580 RPM (distributor). Vacuum Advance (IGW-4203 only)-7.5º distributor with 10" vacuum. IGNITION TIMING: See Ignition Timing. Standard Setting - ¼" flywheel travel BTDC. with flywheel mark "UDC. 1-6 or at indicator (1940) in inspection hole in left front face of rear motor support. CARBURETION: See Carburetor & Carb. Equipment. Idle Setting - Idle screw ¾-1½ turn open (1940). Idle speed 7 MPH. Float Level (1940) - 3/8" from top of machined projection on bowl cover to top of soldered seam on free end of float (invert to check). Accelerating Pump - Lower hole Normal. Inner hole (Summer), Outer hole (Winter) for temp. extremes. Fuel Pump Pressure: 3 lbs. maximum. MANIFOLD HEAT CONTROL: - Manual adjustment on center of manifold behind carburetor. Change setting for seasonal requirements as follows: Setting - Arrow on valve should be lined up with 'W' on manifold for winter temperatures, 'S' for summer temperatures. For high speed driving in extremely hot weather, line arrow up with boss ahead of 'S' mark. To adjust, loosen two nuts on valve bar to release valve, turn valve by hand, tighten nuts VALVES: See Valve Timing. Tappet Clearance: -.006" Intake,.008" Exhaust (hot). STARTING: See Battery, Starter, Generator, Regulator. IGNITION IGNITION SWITCH: Mitchellock. Model 24-B. Type 8273 (1940). Coil connection armored. Ignition Lock - Briggs & Stratton. Mitchell No. 6095. B & S #50184. Key Series H601-H1100. Groove #1. COIL: Auto-Lite Model IG-4662. Service Coil (less Switch & Cable) IG-3224JS. Mounted on the dash. Ignition Current - 2.5 amperes idling, 4.5 stopped. CONDENSER: Auto-Lite Part No. IGW-3075C (Distributor IGW-4203). Capacity -.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGW-4203. Single Breaker, 6 lobe cam, full automatic advance type with Fuel Compensator adjustment. Model IGW4203 has auxiliary vacuum spark. Breaker Gap -.020". Cam Angle or Dwell - 35º closed, 25º open (distributor). Breaker Arm Spring Tension - 16-20 ounces. Rotation - Clockwise (for 1939 cars), counterclockwise (1940), viewed from above. Automatic Advance Distributor Engine Degrees R.P.M. Degrees R.P.M. Start 300 0 600 3 400 6 800 6 720 12 1440 9 1040 18 2080 12 1360 24 2720 14 1580 28 3160 Vacuum Spark Control (IGW-4203 Distr.) - Mounted on distributor hold-down plate and linked to quadrant scale on side of distributor. Provides additional advance at speeds above idling except when engine is accelerated or operated at wide open throttle when spark is retarded by return spring within unit. Vacuum Advance Distr. Degrees Eng. Degrees Vacuum ( of HG) Start 0º 6-¾ 2º 4º 7-5/8 4º 8º 8-½" 6º 12º 9-3/8 7.5º 15º 10 Fuel Compensator Adjustment - Manual adjustment for octane rating of fuel. See Ignition Timing. Removal (1939): Distributor mounted on right side of crankcase. To remove, take out hold-down screw in advance arm. - 1 -

Ignition (Cont d) Vacuum Spark Control (IGW-4203)-On distributor holddown plate and linked to quadrant scale on side of distributor. Provides additional advance at speeds above idling (vacuum port in carburetor above throttle) except when engine is accelerated or operated with wide open throttle when spark is retarded by return spring within unit. Vacuum Advance Distr. Degrees Eng. Degrees Vacuum("of HG) Start 0º 6-3/4" 2º 4º 7-5/8" 4º 8º 8=1/2" 6º 12º 9-3/8" 7.5º 15º 10" Fuel Compensator - Manual adjustment for octane rating of fuel used. See Ignition Timing. Timing (Cont'd) Removal: Distributor mounted at top rear of cylinder block. To remove, disconnect vacuum line, take out cylinder head stud nuts on hold-down plate. Timing (Using Synchroseope) - Recommended method. Mark flywheel with white chalk or paint, connect at #6 spark plug. Idle engine and adjust distributor as directed above. IGNITION TIMING IGNITION TIMING: - Initial setting (for 70 octane fuel). See Fuel Compensator Setting following. Flywheel Degrees Piston Position All engines 0º at TDC.0000" TDC Timing - With #1 piston on compression, turn engine over until piston reaches top dead center, when flywheel mark 'UDC.1-6/1 lines up with pointer in left front face of - 2 -

Ignition Timing (Cont'd) rear motor support above starter. Loosen advance diaphragm screw (at rear end of link), rotate distributor counter-clockwise to limit of slot, then slowly rotate clockwise until contacts begin to open, tighten diaphragm screw securely. Check Fuel Compensator Setting below. Fuel Compensator Setting - Road test car with engine at normal operating temperature. With car running at 7 MPH light ping should occur between 10-15 MPH when accelerating with wide open throttle. To adjust, loosen advance diaphragm screw, rotate distributor one graduation on scale counter-clockwise (if no ping), clockwise (if ping too severe), repeat test. Final setting must not be more than ¾ before UDC.1-6/ mark on flywheel. CARBURETOR CARBURETOR: - Carter Model WA-1 Type 454-S. 1¼, Single Barrel, Downdraft type with Fast Idle and Automatic Choke. Idle Adjustment - With engine warmed up, choke valve wide open and throttle-cracker inoperative, set throttle lever stop screw to idle engine at 7 MPH., Turn idle adjusting screw in until engine begins to miss, then out until engine begins to roll, finally turn screw in slowly until engine fires smoothly. Final setting should be ¾-1½ turn (1940) out from inner seated position. Readjust throttle stop screw for correct idle speed. Accelerating Pump Setting Pump lever (under dust cover on float bowl cover) has three holes for pump link engagement. Adjust as follows: Lower Hole (Med. Stroke) - Normal setting. Inner Hole (Min.) - Hot weather, high-test fuel. Outer Hole (Max.) - Cold weather, low-test fuel. CARBURETOR EQUIPMENT Fast Idle (1940): Integral type (part of carburetor). Setting - Adjust by bending connecting link offset for 5/8" choke valve opening with stop screw against (not on) first step of fast idle cam. Automatic Choke (1940): Carter Climatic Control. Setting - Centered (at index). Air Cleaner: AC No. 1528159 Standard oil-wetted type. United heavy duty oil bath type optional. Fuel Pump: - AC Type AF #1523753 Standard, Type #1523937 combination fuel-and-vacuum pump optional. Gasoline Gauge: - King-Seeley Electric. K-S Nos. Dash Unit - 8118 (1940 Early - White lines), 7752 (1940 Later Cars - White Diamonds). Tank Unit - 7550 (1940). BATTERY BATTERY: - National Type HT-17. 6 volt, 17 plate, 96 A.H. capacity (20 hour rate). Starting Capacity - 120 amperes for 20 minutes. Zero Capacity - 300 amperes for 3.5 minutes. Five second voltage 4.24 volts. Grounded Terminal - Positive (+) grounded to frame. Engine Ground - Strap connector from rear motor support plate to frame. Dimensions Length - 10-9/16". Width - 7-1/4". Height - 7-11/16". Location - In engine compartment on left side. STARTER Auto-Lite Model MZ-4079 & 4079A Armature - MZ-2138 (MZ-4079 & 4079A). Drive - Inboard Barrel type Bendix No. MZ-4079 & 4079A). Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM., 125 amperes, 5 volts. Performance Data. MZ-4079, 4079A Torque RPM Volts Amperes 0 ft. lbs 4300 5.5 70 2.55 " 1325 5.0 200 4,95 " 750 4.5 300 7.65 " 220 4.0 400 7.8 " Lock 3.0 420 11.8 " Lock 4.0 560 Removal -Starter flange mounted on left front face of rear motor support. To remove, take out flange mounting screws. Starting Switch: R-B-M Model 5607. Magnetic type. On starter. Controlled by pushbutton on in. Panel, Douglas No. 5751. GENERATOR Auto-Lite Models GDS-4801A. Armature Number GDF- 2006. Third brush control type with external voltage regulator. Ventilated by fan on pulley. Maximum Charging Rate - 33 amperes cold, 27.5 amperes (hot), 8.0 volts, 30-35 MPH. Actual charging rate controlled by Voltage Regulator and dependent on battery condition. Charging Rate Adjustment - Maximum output controlled by third brush and secured with standard setting of 1 commutator bar from nearest (insulated) main brush. Do not exceed output shown in table below. See Regulator data below for adjustment. To - 3 -

Generator (Cont'd) check output, connect ammeter in charging line at regulator 'BAT' terminal, ground 'F' terminal to eliminate regulator action. Performance Data Cold Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 920 0 6.4 960 4 6.6 1050 4 6.6 1120 8 6.8 1175 8 6.85 1280 12 7.0 1300 12 7.1 1430 16 7.2 1450 16 7.3 1640 20 7.4 1600 20 7.55 1900 24 7.6 1820 24 7.75 2320 28 7.9 2075 27.5 8.0 3200 33 8.0 2900 Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes), Field Current - 1.65-1.82 amperes at 6.0 volts. Motoring Current - 5.10-5.45 amperes at 6.0 volts. Removal & Belt Adjustment: - Same as standard generator. REGULATOR Auto-Lite Model - VRD-4008B (1940 First Cars), VRR-4001A (1940 Later Cars). Used with GDS- 4801A Gen. Cutout Relay and vibrating Voltage Regulator in case on dash. Cutout Relay has special upper contacts for Generator Teleflash Signal control. Cutout Relay Cuts In - 6.4-7.0 volts (VRD), 6.4-6.6 volts (VRR). Cuts Out -.5-3.0 amperes (before Regulator Serial No. 2T-000001), 1.5-4.5 amperes (after No. 2T-000001). (VRD); 4.2-4.8 volts with approximately 4-6 ampere discharge current (VRR). Contact Gap -.015" min. with ground contacts closed (ground contacts must open when main contacts close). Air Gap -.034-.038" (VRD);.031-.034" (VRR) at hinge end of core with contacts open (ground contacts closed). Voltage Regulator Setting - 7.1-7.4 volts at 110º F (all models). To Check (without breaking seals) Connect ammeter in charging line at regulator 'B' terminal, voltmeter between 'B' and 'GD' terminals. Operate generator, charging fully charged battery, at speed equivalent to 30 MPH. until voltage is constant. Voltage should be within limits of 7.1-7.4 volts at 110º F. To Adjust (cover removed) - Change regulator armature spring tension by bending spring hanger at lower end of spring slightly. Voltage Regulator (Cont'd) Contact Gap -.010-.020 (VRD),.012" Min. (VRR) with armature against stop pin. Air Gap -.0595-.0625" (VRD),.048-.052" (VRR) with contacts just opening. LIGHTING Headlamps - Hall Pre-focused type (1939), Hall Sealed Beam" type (1940). Upper and lower beams controlled by Beam Selector Switch on toeboard. Headlamp Adjustment - Aim upper beam of each headlamp straight ahead with hot spot centered on horizontal line 3" below lamp center height. Beam Indicator - On upper left hand corner of instrument panel. Lighted whenever upper beams on. Switches Lighting - R-B-M No.1725(1939), Cole-Hersee. Beam Selector - R-B-M No. 2467. Instrument - Douglas. Bulb Specifications Position Candlepower Mazda No. Headlamps (Export) 21-50 2520 Headlamps Sealed Beam Parking, Instrument 1-1/2 55 Service, Spdmtr., Radio 1-1/2 55 Beam Indicator & Signals 1 51 Stop & Tail 21-3 1158 License, Fender 3 63 Dome 15 87 NOTE - Front Direction Signal Bulb (1940) is 21-3 cp, Mazda No. 1154. The 3 cp. filament of this bulb is used in place of the regular parking bulb (No. 55). MISC. ELECTRICAL SIGNAL LIGHTS: - Generator Charge, and Oil Pressure Indicators - Hudson Teleflash Electric type. FUSES: - Lighting - 20 ampere. On fuse block on lower flange of instrument panel at center. Accessory - 20 ampere. On fuse block. Twin Horns - 30 ampere on block on engine dash. Transmission Overdrive Control - 20 ampere. Direction Indicator - 10 ampere. Electric Clock - 2 ampere. On back of clock. HORNS: - Std. Single Horn - Schwartze Model 42 (Before #7418), Model EX3099 (After #7418). Optional Dual Horns - Delco-Remy Air-trumpet type or Sparton Air-Electric, vibrator type with relay. Horn Relay - R-B-M Model 4790. Contacts Close - 3.5-4.5 volts. Current Draw - 3/4 amp. - 4 -

ENGINE ENGINE SPECIFICATIONS: - 6 cylinder, 'L' head type. Bore - 3". Stroke - 4-1/8". Displacement - 175 cu. inches. Rated HP - 21.6. Developed Horsepower 92 at 4000 RPM. Compression Ratio - 7.0-1, iron heads. Compression Pressure 125 pounds at cranking speed of 125 RPM. Vacuum Reading - Steady 18-21" idling at 7 MPH. PISTONS: - Own Lo-Ex aluminum alloy, 'T' slot, cam ground type. Use finished replacement pistons. Weight - 10.5 ozs. (stripped). Length-3 3/16". Removal - Pistons and rods removed from above. Clearance - Top.016". Skirt.001-.002". Fitting New Pistons: - Use.0015" feeler 1/2" wide inserted between piston and cylinder wall on side opposite slot at right angles to pin. Pull to withdraw feeler must be within 3-4 lbs. Installing Pistons: - Slot away from camshaft. PISTON RINGS: - 2 compression, 2 oil rings (1 above pin, 1 below pin). Rings positioned by pin in groove. Model 40 Ring Width End Gap Side Clearance Compression 3/32".009-.011".001" Oil Cont. (#1) 3/16".009-.011.001" Oil Cont. (#2) 5/32".009-.011.001" PISTON PIN: - Diameter - 3/4". Length - 2-7/16". Floating Type. Retained by locking rings. Pin Fit in Piston -.0003" clearance (hand push fit) with piston heated to 200º F. Pin Fit in Rod Bushing - 0003" clearance. Replacement Pins: - Standard,.002",.005",.010" oversize. CONNECTING ROD: - Weight - 30¾". Length - 8-5/8". Crankpin Journal Diameter - 1-15/16". Lower Bearing - 'Bermax' alloy spun type. Exchange rods furnished standard &.010" undersize. Clearance - 001". Sideplay -.006-.010". Bearing Adjustment: - None (no shims). Replace rods. Installing Rods: - Offset. Install rods with widest half of bearing toward rear (#1, 2, 4), toward front (#3, 5, 6). Oil scoop on all rods toward camshaft. CRANKSHAFT: - 3 bearing, integral counterweights. Journal Diameters - #1-2-11/32"; #2-2-3/8 ; #3-2- 13/32". Clearance - 001". Bearings - Bronze-backed, 'Bermax' alloy type. End Thrust: - Taken by center bearing. Replace bearing if end play excessive. End play -.006-.012". CAMSHAFT: - 3 bearing, gear driven. Journal Diameters #1, 2 ; #2, 1-31/32"; #3, 1-9/16". Bearings - Babbitt type. Clearance -.0025". Camshaft (Cont'd) End Thrust: - Thrust washer between camshaft flange and crankcase. Spring loaded button in camshaft hub bears against thrust plate on gear cover. Timing Gears: - Crankshaft gear cast-iron. Camshaft gear GE or Continental Diamond Fiber Bakelite. Note: 1941 Type Timing Gear Set can be installed on these models. Camshaft Setting: - Mesh marked crankshaft gear tooth between two marked teeth on camshaft gear. VALVES: - Head Diameter Stem Diameter Length All valves 1-3/8" 11/32" 5-11/32" Seat Angle Lift Stem Clearance Intake 45º 11/32".0025" Exhaust 45º 11/32".004" Valve Guides:- 2-9/16" long. Install with top 1-1/16" below top of block and finish ream to size. Valve Springs: - Dampeners (originally used on bottom of springs) should be omitted when valves are serviced. Free length 2-17/64" Spring Pressure Length Valve Closed 40 lbs. 2 Valve Open 80 lbs. 1-21/32" NOTE - Replace if pressure below 34 lbs. at 2". Valve Lifters: - Roller shoe type, fitted in removable guides. VALVE TIMING Tappet Clearance: -.006" Intake,.008", Exhaust, hot & idling. Valve Timing: - See Camshaft Setting above. Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valves - Open 50º BLDC. Close 18º44' ATDC. These figures correct with.010" tappet clearance. Valve Timing Check - With.010" tappet clearance #1 intake valve should open with piston 10º40' or.0441" BTDC when point on flywheel approx. 3.95 teeth before 'UDC.1-6/' lines up with indicator in hole above starter. Reset tappet clearance.006" Hot. LUBRICATION LUBRICATION: - Duo-flo (pressure & positive splash). Oil Pump: - Oscillating plunger type, gear driven by camshaft. Mounted on right side of crankcase. Normal Oil Pressure - 3 lbs. (no gauge). Oil Pressure Regulator: - Located on right side of crankcase at rear. Opens at 3 lbs. Not adjustable. Oil Pressure Indicator: - Teleflash Oil Pressure indicator. Crankcase Capacity: - 4½ qts. (refill), 5½ (dry). NOTE - Whenever pan installed, place 1½ quarts in upper tray, then 4 quarts through filler. - 5 -

COOLING Capacity: 13 quarts (1940) Water Pump: - Centrifugal, belt driven, packless type. Removal - Drain water, remove fan belt, disconnect pump hoses, remove mounting bolts and lift off Thermostat: - Fulton. In cylinder head water outlet. Setting - Starts to open 150-155º F. Fully open 135º. Temperature Gauge: - King-Seeley Electric K-S Nos. Dash Unit - 8120 (1940 Early - White Lines), 7755 (1940 Later White Diamonds). Engine Unit-No. 7000 (All Models). CLUTCH CLUTCH: - Own make. Single plate, cork insert type operating in oil. Overdrive Cars equipped with heavier clutch housing and larger (10") clutch. Driven Member - Cork Insert type (operates in oil). Inside - Diameter - Outside No. Corks 1940 Std 5-3/8" 9" 90 1940 With OD 6½" 10 108 Corks are.077" thick. Pedal Adjustment: - 1-½ free travel. Adjust yoke on lower end of pedal connector link. Check Automatic Clutch Control & Hill-holder (if used). Removal: - Remove transmission (see below), drain clutch oil, take out mounting screws in clutch cover rim, remove clutch assembly from below. Automatic Clutch Control: - Electric type. Optional. TRANSMISSION TRANSMISSION: - Own Make. Constant-mesh, helical gear (second & high), sliding spur (low & reverse). Transmission Control: - Hudson 'Handy-Shift' type. Removal: Remove front cushion and push seat back, remove accelerator pedal. Remove floor mat and transmission hole cover. Disconnect front universal joint. Remove clutch pedal return spring, assist spring, and cross-shaft. Release transmission side bumpers and rods, disconnect handy-shift controls at transmission, remove speedometer cable. Raise front end of car, remove lower flywheel guard and engine rear mounting bolts, raise rear end of engine off frame. Remove clutch housing-to-engine mounting bolts, pull transmission back and lift out. NOTE - Transmission can be taken out without disturbing clutch housing by taking out transmissionto- clutch housing bolts. Installation Note - Wrap one strand of soft wire around throw-out bearing oil seal to prevent leather curling over when transmission installed. Remove wire after transmission installed. OVERDRIVE Overdrive: - Warner Model AS13-R6 with electrical 'Kick-down' control optional. - 6 - Overdrive (Cont'd) Overdrive Transmission Removal - Same as Standard Transmission (above) except overdrive solenoid wires and control cable must also be disconnected. Overdrive Solenoid - Delco-Remy No. 1569. Throttle Control Switch - R-B-M Model 6013. Adjust so contact washer on accelerator linkage just contacts switch plunger with throttle wide open. Control Relay - Auto-Lite Model HR-4201. UNIVERSALS Spicer. Needle Bearing type. Model Nos. as follows: Front - 1261-101 (1940 Standard), 1271-101 (1940 with overdrive). Rear - 1268-101 (1940 Standard), 1278-101 (1940 with overdrive). REAR AXLE REAR AXLE: - Own Make. Semi-floating spiral bevel gear & Hotchkiss drive. Ratio - 4 5/9-1 (Standard - Optional with Overdrive), 4 7/8-1 (Standard with Overdrive, Optional without Overdrive), 4 1/9-1 (Optional all models). Backlash -.0005-.003". Screw adjustment. Removal: - Disconnect drive shaft at rear universal. Remove axle shafts (see below) and capscrews on carrier flange. Pull carrier assembly out. Axle Shaft Removal: - Remove wheel and hub (use screw type puller only), remove 4 nuts on bearing cap bolts, push bolts out of backing plate, remove cap (without disturbing brake link), remove shims pull shaft & wheel bearing (do not drag on seal) Wheel Bearing Adjustment: - Controlled by shims under bearing cap. To adjust, remove bearing cal (see Removal directions above), add or remove shims equally at both wheels. Endplay -.002-.004". SHOCK ABSORBERS Monroe. Direct Acting, Hydraulic type. Front - Monroe No. 160101 (1940 - Standard Springs), 160102 (1940 - Heavy Duty Springs). Rear - Monroe No. 160107 (1940 Standard Springs), 160108 (1940 - Heavy Duty Springs). FRONT SUSPENSION - 1940 MODELS Front Suspension: Independent, linked parallelogram type with coil springs & Autopoise control. Kingpin Inclination 4º36' crosswise. Caster-Oº (Neg. ¼º to Pos. ¼º). Adjustable. Camber-Positive ¼º to Pos. ¾º. Adjustable. Toe In - 0-1/16". Adjust each tube equally. Steering Geometry - Inner wheel 24º. Outer 20º 50'.

STEERING GEAR Steering Gear: Gemmer Model 305 Worm-and-Roller with "push-pull" adjustments. NOTE - 1940 Cars have new Center Point Steering Linkage (for Suspension) BRAKES BRAKES (40T,40P): - Service - Bendix hydraulic, Double Anchor, duo-servo type with Mechanical Followup. Hand lever applies rear service brakes. Brakes (Cont'd) Drums - Alloy steel. Diameter - 9-1/16". Lining - Moulded (primary), woven (secondary). Width - 1¾". Thickness - 7/32". Length per wheel - 19". Clearance - 010" at heel and toe of each shoe. Hand Brake: - See Service Brakes above. Hill-Holder: Optional.. BRAKES (40 BUSINESS CARS): Service - Same as Model 40 (above) except for: Drums Diameter - 10-1/16". Lining -Length per wheel - 22-1/8". - 7 -

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H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS 1940 HUDSON 6 MODELS (exc. Model 40)

H U D S O N T E C H 2004

1940 Hudson 6 Models 41, 43, 48 Tune-up Specifications MODEL IDENTIFICATION SERIAL NUMBER: Stamped on plate on right front door hinge pillar post. First Nos. as follows: Super Six 41101 Country Club Six 43101 Business Cars 48101 ENGINE NUMBER: - Same as Serial No. On top of cylinder block between #1 and 2 exhaust flanges. TUNE-UP COMPRESSION: Ratio 7.0-1 Pressure - 125 lbs. at cranking speed of 125 RPM. VACUUM READING: Steady 18-21" idling at 7 MPH. FIRING ORDER: 1-5-3-6-2-4. See diagram. SPARK PLUGS: Champion Type J-8.14 mm. Metric. Gap -.032" IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.020"; Cam Angle 35º (closed). Automatic Advance - 14º max. at 1580 RPM (distributor). Vacuum Advance (IGW-4203) - 7.5º distributor with 10" vacuum. IGNITION TIMING: See Ignition Timing. Standard Setting - At TDC with flywheel mark 'UDC 1-6/' at indicator in inspection hole in left front face of rear motor support. CARBURETION: See Carburetor & Carb. Equipment. Idle Setting (Single Carb.): 454-S - 3/4 1-1/2 turns open. Idle Setting (Dual Carb): 430-SV, 461 - Both idle screws 1/4-1-1/4 turn open. Idle speed 7 MPH. Float Level (454-S) - 3/8" from top of machined projection on bowl cover to top of soldered seam on free end of float. Float Level (430-SV, 461-S) - 3/32" from gasket seat on cover to top of float at each end. Accelerating Pump (Single Carb.) - Lower hole Normal. Inner hole (Summer), Outer hole (Winter). Accelerating Pump (Dual Carb.) - Outer hole Normal. Inner hole (min. stroke) when required. Fuel Pump Pressure: 3 lbs. max. (Model 48), 4-1/2 lbs. (41, 43,). MANIFOLD HEAT CONTROL: (Model 48) Manual adjustment type on center of manifold behind carburetor. Change settings for seasonal requirements as follows: Setting (Model 48) - Valve set at factory with pointer toward rear in "W" position. Correct for all seasons. (Models 41, 43) - Automatic thermostatic coil type. No adjustment. See that valve operates freely. VALVES: See Valve Timing. Tappet Clearance: -.006" Intake,.008" Exhaust (hot & idling). Remove right front fender plate for access to valves. STARTING: See Battery. Starter, Generator, Regulator. IGNITION IGNITION SWITCH: Mitchellock. Model 24-B. Type 8273. Coil connection armored. Ignition Lock - Briggs & Stratton. B & S No. 50184. Key Series - H601 to H1100. Groove-No. 1. COIL: Auto-Lite Model IG-4662. Service Coil (less Switch & Cable) IG-3224JS. Ignition Current - 2.5 amperes idling, 4.5 stopped. CONDENSER: Auto-Lite Part No. IGW-3075C. Capacity -.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGW-4203. Single breaker, 6 lobe cam, full automatic advance type. Has vacuum spark control. NOTE - Distributor mounted at top of cylinder block at rear and driven through offset tongue-and-slot coupling by intermediate shaft. Rotation is now counterclockwise (reversed from 1939 models). Breaker Gap -.020". Cam Angle or Dwell - 35º closed, 25º open (distributor). Breaker Arm Spring Tension - 17-20 ounces. Rotation - Counter-clockwise, viewed from above. Automatic Advance Distributor Engine Degrees RPM Degrees RPM Start 300 0 600 3 400 6 800 7 825 14 1650 11 1255 22 2510 14 1530 28 3160 Vacuum Spark Control (IGW-4203) - On distributor holddown plate and linked to quadrant scale on side of distributor. Provides additional advance at speeds above idling (vacuum port in carburetor above throttle) except when engine is accelerated or operated with wide open throttle when spark is retarded by return spring within unit. Vacuum Advance Dist. Degrees Eng. Degrees Vacuum ( of Hg) Start 0º 6-3/4"" 2º 4º 7-5/8" 4º 8º 8-1/2" 6º 12º 9-3/8" 7.5º 15º 10" - 1 -

Ignition (Cont d) Fuel Compensator - Manual adjustment for octane rating of fuel used. Distributor mounted at top rear of cylinder block. To remove, disconnect vacuum line, take out cylinder head stud nuts on hold-down plate. IGNITION TIMING:-Initial setting (for 70 octane fuel). See Fuel Compensator Setting following. Flywheel Degrees Piston Position All engines 0º at TDC.0000" TDC Timing - With #1 piston on compression, turn engine over until piston reaches top dead center, when flywheel mark 'UDC.1-6/1 lines up with pointer in left front face of rear motor support above starter. Loosen advance diaphragm screw (at rear end of link), rotate distributor counter-clockwise to limit of slot, then slowly rotate clockwise until contacts begin to open, tighten diaphragm screw securely. Check Fuel Compensator Setting below. - 2 -

Timing (Using Synchroseope) - Recommended method. Mark flywheel with white chalk or paint, connect at #6 spark plug. Idle engine and adjust distributor as directed above. Fuel Compensator Setting - Road test car with engine at normal operating temperature. With car running at 7 MPH slight ping should occur between 10-15 MPH when accelerating with wide open throttle. To adjust, loosen advance diaphragm screw, rotate distributor one graduation on quadrant scale clockwise (it no ping), counter-clockwise (if ping too severe), repeat test. Final setting not more than ¾" before "UDC.1-6/"mark. CARBURETOR - SINGLE BARREL (Model 48) - Carter Model WA-1 Type 454-S. l¼ single barrel downdraft type with fast idle and automatic choke. Idle Adjustment - With engine warm and running at slow idle speed (choke valve wide open, fast idle inoperative), set throttle stop-screw for 7 MPH idle speed. Adjust idle adjusting screw until engine fires smoothly - idle screw approximately ¾-1½ turn open (454-S) - turn screw in for leaner mixture. Readjust idle speed. Accelerating Pump Setting - Pump arm has 3 holes for pump link. Set as follows: Lower Hole (medium stroke) - Normal setting. Inner Hole (minimum) - Hot weather, high-test fuel. Upper Hole (maximum) - Cold weather, low-test fuel. Float Level (454-S) - 3/8" from top of machined projection on bowl cover to top of soldered seam on free end of float (invert to check). CARBURETOR DUAL (DOUBLE BARREL) Carter Model WDO Type 430-SV ((Model 41, 43 before Engine No. 3116), 461-S (1940 after Eng. No. 3116). Dual (double barrel) downdraft types with fast idle and automatic choke. Idle Adjustment - With engine warm and running at slow idle speed (fast idle and automatic choke inoperative), set throttle stop-screw to idle engine at 7 MPH. Turn each idle adjusting screw (in succession) in until engine begins to miss, then turn screw out until engine begins to roll, finally turn screw in until engine fires smoothly. Final setting of both screws should be ¼-1¼ turn open. Readjust for 7 MPH idle speed. Accelerating Pump Setting - Pump lever (under dust cover on top of bowl) has two holes for pump link engagement. Adjust as follows: Outer Hole (max. stroke) - Normal setting. Inner Hole (min. stroke) - If less charge required. Carburetor, Dual (Cont'd) Float Level - 3/32" from gasket seat on cover to top of float at each end (invert to check). CARBURETOR EQUIPMENT Fast Idle (454-S): Integral with carburetor. Setting - Adjust by bending connecting link offset for 5/8 choke valve opening with stop screw against (not on) first step of fast idle cam. NOTE - With choke valve fully closed and pin on fast idle cam at bottom of slot in fast idle link, clearance between top of fast idle cam (behind link) and trip lever should be.010". To adjust, bend trip lever stop (on engine side of link). Fast Idle (430-SV, 461-S): Integral with carburetor. Setting - Adjust fast idle screw so that throttle opening is.0181, with choke valve tightly closed. Automatic Choke (All Models): Carter Climatic Control Setting Center thermostatic coil housing. Air Cleaner: AC No. 1528161 (Standard 41, 43), 1528159 (Standard 48), 1523937 Oil-wetted type. United heavy duty. Oil-bath type Optional. Fuel Pump: AC Type AK, No. 1523289 (Std. 41, 43); Type AF, No. 1523753 (Std. 48). Diaphragm type fuel pump. Gasoline Gauge: - King-Seeley Electric. K-S Nos. Dash Unit - No. 8118 (1940 Early - White Lines), 7752 (1940 Later - White Diamonds). Tank Unit - No. 7550 (1940 All Models). BATTERY BATTERY: - National, Type HT-17. 6 volt, 17 plate, 96 ampere hour capacity (20 hour rate). Starting Capacity - 120 amperes for 20 minutes. Zero Capacity - 300 amperes for 3.5 minutes. Five second voltage - 4.24 volts. Grounded Terminal - Positive (+) grounded to frame. Engine Ground - Strap connector from rear motor support to frame. Location - Left side of engine compartment. (under hood). STARTER Auto-Lite Model MZ-4079 or 4079A (1940 All Models). Armature - Auto-Lite MZ-2138 (All MZ- Starters). Drive - Inboard Barrel Type Bendix Drives Nos. A- 1684. Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM., 125 amperes, 5.4 volts - 3 -

Performance Data MZ-4079,4079A Torque R.P.M. Volts Amperes 0 ft. lbs 4300 5.5 70.65 2500 5.5 100 2.55 " 1325 5.0 200 4.95 " 750 4.5 300 7.65 220 4.0 400 7.8 Lock 3.0 420 11.8 Lock 4.0 560 Removal: - Flange (new heavier casting) mounted on left front face of rear motor support. To remove, take out flange mounting screws. Starting Switch (MAB-4075, 4100): Auto-Lite Model SS-4001. Magnetic type. Mounted on starter and controlled by pushbutton on instrument panel. Operative only with ignition "on" and clutch disengaged on cars with Electric Hand. (MAJ-4057, 4061) - Auto-Lite Model SW-4010. Manual type. Mounted on starter and operated by button directly below steering column. (MZ-4079,4079A) - R-B-M Model 5607. Magnetic type. On starter, controlled by pushbutton on instrument panel Douglas #5751. NOTE - Switch is new type. GENERATOR MODELS 41, 43, 48 Auto-Lite Model GDS-4801A (48 Standard; GEC- 4801A (41, 43 Standard). Third brush control with external vibrating voltage regulation. Ventilated by fan on drive pulley.\\ Armature - GDF-2006F (GDS), GDZ-2006F (GEC). Maximum Charging Rate - GDS-32-34 amperes (cold), 8.0 volts, 2900 RPM or approx. 35 MPH. GEC - 39-44 amperes (cold), 8.0 volts, 3350 RPM or approx. 43 MPH. Actual charging rate controlled by voltage regulator and dependent on battery condition. See Regulator. To check output, ground generator 'F' terminal (to eliminate regulator). Charging Rate Adjustment - See Regulator data. Third brush setting: GDS - 1 commutator bar minus 1 mica strip minimum, 1 commutator bar maximum from insulated (nearest) main brush. GEC-1 commutator bar min., 1 commutator bar plus 1 mica strip Max. Setting adjustable by shifting third brush. Performance Data - GDS-4801A Cold Hot Amperes Volts R.P.M. Amperes Volts R.P.M. 0 6.4 920 0 6.4 960 4 6.6 1050 4 6.65 1120 8 6.8 1175 8 6.9 1280 12 7.0 1300 12 7.1 1430 16 7.2 1450 16 7.35 1640 20 7.4 1600 20 7.6 1900 24 7.6 1820 24 7.8 2320 28 7.3 2075 27.5 8.0 3400 33 8.0 2900 Performance Data - GEC-4801A 0 6.4 960 0 6.4 1040 4 6.55 1060 4 6.6 1140 8 6.7 1160 8 6.8 1280 12 6.85 1280 12 6.95 1440 16 7.0 1400 16 7.15 1600 20 7.15 1550 20 7.35 1820 24 7.25 1700 24 7.55 2090 28 7.5 1890 28 7.75 2440 32 7.65 2100 32 7.9 3000 36 7.8 2375 34 8.0 3800 41 8.0 3350 Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes). Field Current - 1.65-1.82 amperes (GDS), 1.60-1.78 amperes (GEC) at 6.0 volts. Motoring Current - 5.10-5.45 (ODS), 4.85-5.4 (GEC) amperes at 6.0 volts. Belt Adjustment: - Swing generator out until possible belt deflection midway between generator and fan pulleys is ¾" (measure with straightedge). GENERATOR SPECIAL EQUIPMENT SPECIAL GENERATORS: - Auto-Lite GEG-4801A, GEA4803B, GEB-4802B (Police etc.). Used with Regulator Models VRP-4008A (GEG Gen.), VRP- 4003B GEA Gen.), VRP-4008C (GEB Gen.). Refer to 1940 Hudson Eight article (following) for complete data. CUTOUT RELAY Auto-Lite Model CBA-40~03 (Used with GBM- 4609A, GDF-4803A-1, GDS-4803A-1 Gen.). Mounted on engine side of dash. Relay has extra set of contacts for Generator "Teleflash" signal Charging Indicator control. - 4 -

Cutout Relay (Cont'd) Cuts In - 6.75-7.5 volts. Cuts Out - 1.5-4.5 ampere discharge current (after charging at 16 amperes). Contact Gap - 015-04511 with upper ground contacts closed (upper contacts must open when main contacts close). Air Gap -.010-.0301, with contacts closed. REGULATOR Auto-Lite Model VRD-4008-B (1940 First Cars), VRR-4001A (1940 Later Cars). Used with GDS- 4801A & GEC-4801A Gen. Cutout Relay and vibrating Voltage Regulator in case on dash. Cutout Relay has special upper contacts for Generator Teleflash Signal control. NOTE - Regulator case cover is sealed. Serviced on exchange basis if seals not broken. Cutout Relay Cuts In - 6.4-7.0 volts (VRD), 6.4-6.6 volts (VRR) 825 RPM., 9.4 MPH. Cuts Out-.5-3.0 amperes (before Regulator Serial No. 2T-000001), 1.5-4.5 amperes (after No. 2T-000001) (VRD); 4.2-4.8 volts with approximately 4-6 amperes discharge current (VRR). Contact Gap -.015" minimum with ground contacts closed (must open when main contacts close). Air Gap -.034-.038" (VRD).031-.034" (VRR), at hinge end of core (contact - open, ground contacts closed). Voltage Regulator Setting-7.1-7.4 volts at 110º F. (all models). To Check (without breaking seals) - Connect ammeter in charging line at regulator 'B' terminal, voltmeter between this terminal and ground. Operate generator at speed of 30 MPH charging battery until voltage is constant. Voltmeter reading should be within limits of 7.1-7.4 volts at 110º. See Electrical Equipment Section for voltages at other temp. To Adjust (with cover removed) - Change regulator armature spring tension by bending lower spring hanger slightly. Contact Gap-.010-.020" (VRD),.012" Min. (VRR) (armature against stop pin). Air Gap -.0595-.062511 (VRD),.048-.0521, (VRR) with contacts just opening. LIGHTING Headlamps - Hall Pre-focused type (1939), Hall Sealed Beam" type (1940). Upper and lower beams controlled by Beam Selector Switch on toeboard. Lighting (Cont'd) Headlamp Adjustment - Aim upper beam of each headlamp straight ahead with hot spot centered on F horizontal line 31, below lamp center height. Beam Indicator-Red pilot bulb on speedometer dial. Lighted with Country (upper) beam in use. Direction Indicator-- Standard equipment on. 43, Optl. on 40, 41, 48. Switches Lighting - Cole-Herse. Beam Selector R-B-M No. 2467. Instrument (43 only)-r-b-m Model 5203. Bulb Specifications Position Candlepower Mazda No. Headlamps (Export) 21-50 2520 Headlamps ( Sealed Beam Side Panel (Parking-see Note) 11/2 65 Front Dir. Sig. (see Note) 21-3 1154 Speedometer only (40, 41, 48) 51 Instru. & Spdmtr. (43), Clock 1½ 55 All Indicators 1 51 Stop & Tail (see Note) 21-3 1154 Rear License 3 63 Dome 15 87 NOTE - Direction Indicator (Std. on 43) front bulb CC replaces parking bulb in Bonnet Side Panel Lamp. MISCELLANEOUS ELECTRICAL SIGNAL LIGHTS: - Generator Charge and Oil Pressure Indicators. Hudson Teleflash Electric type. For complete data, refer to Electrical Equipment Index. FUSES: - Lighting-20 ampere. Lower fuse on fuse block on lower edge of instrument panel to right of steering column. Accessory-20 amperes. Top fuse on fuse block. NOTE - Silver-plated fuses used. Twin Horns - 30 ampere on block on engine dash. Transmission Overdrive Control - 20 amp. On Relay. CR, Direction Indicator - 10 ampere. In case on back of instrument panel near speedometer. Electric Clock - 2 ampere on back of clock. HORNS: Single - Schwarze Electric type (48) Dual Horns - Vibrator type twin horns operated by relay. Sparton (41,43). ENGINE ENGINE SPECIFICATIONS:-6 cylinder, 'L' head type. Bore - 3". Stroke 5. Displacement - 212 cubic inches. Rated HP 21.6. Developed Horsepower For each model as follows: 48 (Single Carb.) 98 HP. at 4000 RPM. 41, 43 (Dual Carb 102 HP. at 4000 RPM. - 5 -

Engine (Cont'd) Compression Ratio - 6.5-1 (19'40 Iron heads.) Compression Pressure - 120 lbs. at 125 RPM. Vacuum Reading - Steady 18-21 idling at 7 MPH. PISTONS: - Own Lo-Ex aluminum alloy, slot, cam ground type. Use finished replacement pistons. Weight - 10.5 ozs. (stripped). Length 3-3/16". Removal - Pistons and rods removed from above. Fitting New Pistons: - Use.0015" feeler ½" wide inserted between piston and cylinder wall on side opposite slot at right angles to pin. Pull to withdraw feeler must be within 3-4 lbs. Installing Pistons: - Slot away from camshaft. PISTON RINGS: - 2 compression, 2 oil rings (1 above pin, 1 below pin). Rings positioned by pin in groove. Models 41,43,48 (1940) Ring Width End Gap Side Clearance Compression 3/32".009-.011.001" Oil Cont. (#1) 3/16.009-.011.001 Oil Cont. (#2) 5/32.009-.011".001 PISTON PIN: - Diameter - ¾". Length - 2-7/16". Floating Type. Retained by locking rings. Pin Fit in Piston -.0003" clearance (hand push fit) with piston heated to 200º F. Pin Fit in Rod Bushing -.0003" clearance. Replacement Pins: - Standard,.002,.005",.010 oversize. CONNECTING ROD: - Weight 30 ozs. Length 8-3/16". Upper Bearing (Piston Pin Bushing) - Bronze. Crankpin Journal Diameter 1-15/16". Lower Bearing - 'Bermax' alloy spun type. Exchange rods furnished Std. &.010 undersize. See Crankshaft Size Code in Hudson Shop Notes for bearing sizes. Clearance -.001". Sideplay -.006-.010". Bearing Adjustment : - None (no shims). Replace rods. Installing Rods: - Offset. Install rods with widest half of bearing toward rear (# 1, 2, 4), toward front (# 3, 5, 6). Oil scoop on all rods toward camshaft. CRANKSHAFT:-3 bearing, integral counterweights. Journal Diameters-#l, 2-11/32"; #2, 2-3/8 ; #3, 2-13/32". Clearance 001. Bearings - Bronze-backed, 'Bermax' alloy type. End Thrust: - Taken by center bearing. Replace bearing if endplay excessive. Endplay-.006-.012". CAMSHAFT:-3 bearing, gear driven. Journal Diameters - #1, 2"; #2, 1-1/32"; #3, 1-9/16". Bearings - Babbitt type. Clearance-0025". Camshaft (Cont'd) End Thrust :-Thrust washer between camshaft flange and crankcase. Spring loaded button in cam-shaft hub bears against thrust plate on gear cover. Timing Gears: - Crankshaft gear cast-iron. Camshaft gear GE or Continental Diamond Fiber Bakelite. NOTE: 1941 Type Timing Gear Set can be installed on these models. Camshaft Setting: - Mesh marked crankshaft gear tooth between two marked: teeth on camshaft gear. VALVES:- Head Diameter Stem Diameter Length All valves 1-3/8" 11/32 5-11/32" Seat Angle Lift Stem Clearance Intake 45º 11/32".0025" Exhaust 45º 11/32".004" Valve Guides: - 2-9/16" long. Install with top 1-1/16" below top of block and finish ream to size. Valve Springs: - Dampeners (originally used on bottom of springs) should be omitted when valves serviced. Free length - 2-17/64". Spring Pressure Length Valve Closed 40lbs 2" Valve Open 80lbs 1-21/32". NOTE - Replace if pressure below 34 lbs. at 2". Valve Lifters: - Roller shoe type, fitted in removable guides. VALVE TIMING Tappet Clearance: -.006" Intake,.008" Exhaust, hot & idling. Valve Timing: - See Camshaft Setting above. Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valves - Open 50º BLDC.. Close 18º44' ATDC. These figures correct with.010" tappet clearance. Valve Timing Check - With.010" tappet clearance #1 intake valve should open with piston 10º40" or.0562" BTDC when a point on the flywheel approx. 3.94 teeth before 'UDC.1-6/' lines up with indicator In hole above starter. Reset tappet clearance 006" Hot. LUBRICATION LUBRICATION: - Duo-flo (pressure & positive splash). Oil Pump: - Oscillating plunger type, gear driven by camshaft. Mounted on right side of crankcase. Normal Oil Pressure - 3 lbs. (no gauge). Oil Pressure Regulator: - Located on right side of crankcase at rear. Opens at 3 lbs. Not adjustable. Oil Pressure Indicator:- Teleflash Oil Pressure indicator. Crankcase Capacity:-4-1/2 qts. (refill), 5-1/2 (dry). NOTE - If pan off, install 1-1/2 qts. in upper tray. - 6 -

COOLING Capacity: 13 qts. (1940). Water Pump: - Centrifugal, belt driven, packless type. Removal - Drain water, remove fan belt, disconnect pump hoses, remove mounting bolts and lift off Thermostat: - Fulton. In cylinder head water outlet. Setting - Starts to open 150-155º F. Fully open 185º F. Temperature Gauge: - King-Seeley Electric-K-S Nos. Dash Unit-No. 8120 (1940 EarlyWhite Lines), 7755 (1940 Later-White Diamonds). Engine Unit-No. 7000. CLUTCH CLUTCH: - Own make. Single plate, cork insert type operating in oil. Overdrive Cars - equipped with heavier clutch housing and larger redesigned disc. Driven Member - Cork Insert type (operates In oil). Inside Dia. - Outside No. Corks 41(without OD) 5-3/8 9 90 41 OvDr, 43, 48 6½ 10 108 Corks are.077". Pedal Adjustment: - 1½" free travel. Adjust yoke on lower end of pedal connector link. Check Automatic Clutch Control & Hill-holder (if used). Clutch Oil Servicing: See Hudson Shop Notes Removal: - Remove transmission (see below), drain clutch oil, take out mounting screws in clutch cover rim, remove clutch assembly from below. Automatic Clutch Control: - Electric type. Optional TRANSMISSION: - Own Make. Constant-mesh, helical gear (second & high), sliding spur (low & reverse). Transmission Control: - Hudson 'Handy-Shift' type. Removal: Remove front cushion and push seat back, remove accelerator pedal. Remove floor mat and transmission hole cover. Disconnect front universal joint. Remove clutch pedal return spring, assist spring, and cross-shaft. Release transmission side bumpers and rods, disconnect handy-shift controls at transmission remove speedometer cable. Raise front end of car: remove lower flywheel guard and engine rear mounting bolts, raise rear end of engine off frame. Remove clutch housing-to-engine mounting bolts, pull transmission back and lift out. NOTE - Transmission can be taken out without disturbing clutch housing by taking out transmissionto-clutch housing bolts. Installation Note - Wrap one strand of soft wire around throw-out bearing oil seal to prevent leather curling over when transmission installed. Remove wire after transmission installed. OVERDRIVE Overdrive: - Warner Model AS13-R6 with electrical 'Kick-down' control optional, See Transmission Section for complete data. Overdrive Transmission Removal - Same as Standard Transmission (above) except overdrive solenoid wires and control cable must also be disconnected. Overdrive Solenoid-Delco-Remy No. 1569. Throttle Control Switch - R-B-M Model 6013. Adjust so contact washer on accelerator linkage Just contacts switch plunger with throttle wide open. Control Relay - Auto-Lite Model HR-4201. UNIVERSALS Spicer - Needle bearing type. Model Nos. as follows: Front - 127-101 (41, 43, 48). Rear - 1278-101 (1940 all). REAR AXLE REAR AXLE: - Own Make. Semi-floating spiral bevel gear & Hotchkiss drive. See Rear Axle Section. Ratio-4 1/9-1 (Standard, Optional on overdrive), 4 5/9-1 (Standard on Overdrive, Optional. regular transmission). Backlash-.0005-.003". Screw adjustment. Removal: - Remove wheel and hub assembly (use screw type puller, remove nuts on 4 bearing cap bolts, push bolts back through backing plate, remove cap (without disturbing brake link), remove shims, pull axle shaft and wheel bearing. Disconnect drive shaft at rear universal, remove nuts on housing to carrier studs ' withdraw carrier. Wheel Bearing Adjustment: - Controlled by shims under bearing cap. To adjust, remove bearing cap (see Removal directions above), add or remove shims equally at both wheels. Endplay -.002-.004". SHOCK ABSORBERS SHOCK ABSORBERS: - Direct acting, hydraulic types. Car Model Make Front Rear 41, 48 (std. springs) Monroe 160101 160107 41, 48 (hvy. springs) Monroe 160102 160108 43 (Dom. & Exp.) Delco 1007-C 1008-S - 7 -

FRONT SUSPENSION 1940 MODELS Front Suspension: Independent, linked parallelogram type with coil springs & Autopoise control. Kingpin Inclination - 4º 36' crosswise. Caster - 0º (Neg. 1/4º to Pos. 1/4º). Adjustable. Camber - Positive 1/4º to Pos. 3/4º. Adjustable. Toe In - 0-1/16". Adjust each tube equally. Steering Geometry - Inner wheel 24º. Outer 20º 50'. STEERING GEAR Steering Gear: Gemmer Model 305 Worm-and-Roller with "push-pull" adjustments. NOTE - 1940 Cars have new type Center Point Steering Linkage (used with Independent Suspension). BRAKES BRAKES: - Service. Bendix hydraulic, duo-servo, single anchor type with eccentric adjustment. Mechanical follow-up (pedal linked to hand brake cables) provided. Hand lever applies rear service brakes. Drums - Alloy Steel. Diameter 10-1/16" (except 43), 11-1/16" (43). Lining - Moulded (primary), woven (secondary). Thickness 7/32 -.Width 1¾". Length per wheel 22-1/8". (except 43), 23-15/16" (43). Clearance -.010" at heel and toe of each shoe. Hand Brake: - See Service Brakes above. Hill-Holder: Optional. - 8 -

H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS 1940 HUDSON 8 MODELS

H U D S O N T E C H 2004

1940 Hudson 8 MODEL IDENTIFICATION SERIAL NUMBER: Stamped on right front door hinge pillar post. First Nos. as follows: Eight 44-101 Deluxe Eight 45-101 Country Club Eight 471-01 ENGINE NUMBER: - Same as Serial No. On top of engine block between #1 & 2 exhaust flanges. TUNE-UP COMPRESSION: Ratio - 6.5-1 Pressure - 120 lbs. at cranking speed of 125 RPM. VACUUM READING: - 18-21- steady idling at 7 MPH. FIRING ORDER: 1-6-2-5-8-3-7-4. See diagram. SPARK PLUGS: Champion Type J-8.14 mm. Metric. Gaps -.032" IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.017"; Cam Angle 31º, (closed). Automatic Advance - 17.5º max at 1700 RPM (distributor). IGNITION TIMING: See Ignition Timing. Standard Setting - At TDC. with flywheel mark "UDC. 1-8/" at indicator in inspection hole in left front face of rear motor support. CARBURETION: See Carburetor & Carb. Equipment. Idle Setting - Both idle screws 1/4-1 turn open (430S), 1/2-1-1/2 turns open (455-S). Idle speed 7 MPH. Float Level - 3/32" from gasket seat on cover to top of float at each end (invert to check). Accelerating Pump - Outer hole (max. stroke) Normal. Inner hole (min. stroke) when required. Fuel Pump Pressure: 4 lbs. max. (Comb. fuel & vacuum pump), 4-1/2 lbs. max. (fuel pump only). MANIFOLD HEAT CONTROL: - Automatic thermostatic coil type. No adjustment required. VALVES: See Valve Timing. Tappet Clearance: -.006" Intake,.008" Exhaust (with engine hot and idling). Remove right front fender plate for access to valves. STARTING: See Battery, Starter, Generator, Regulator. IGNITION IGNITION SWITCH: Mitchellock. Model 24-B, Type 8273. Connected to coil by armored cable. Ignition Lock - Briggs & Stratton. B & S No. 50184. Key Series - H601 to H1100. Groove - No. 1. COIL: Auto-Lite Model 4641. Service Coil (less Switch & Cable) CE-3224JS. Ignition Current - 2.5 amperes idling, 4.5 stopped CONDENSER: Auto-Lite Part No. IG-2671. Capacity -.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGP-4008A. Full auto. automatic advance type with manual (octane selector) adjustment. No vacuum spark control. Distributor (Cont d) Breaker Gap -.017". Cam Angle or Dwell - 31º closed, 14º open (distributor). Breaker Arm Spring Tension - 17-20 ounces. Rotation - Clockwise viewed from above. Automatic Advance Distributor Engine Degrees R.P.M. Degrees R.P.M. Start 300 0 600 3 400 6 800 8 850 16 1700 13 1300 26 2600 17.5 1700 35 3400 Fuel Compensator Adjustment - Manual adjustment for octane rating of fuel. See Ignition Timing. Removal: - Mounted on right side of crankcase. To remove take out hold-down screw in advance arm. IGNITION TIMING IGNITION TIMING: - Initial Setting (for 70 octane rating fuel). See Fuel Compensator setting following. Flywheel Degrees Piston Position All Engines 0º at TDC.000" TDC Timing - With #1 piston on compression, turn engine over until piston reaches top dead center when flywheel mark 'UDC.1-8/' lines up with pointer In left front face of rear motor support. Loosen hold-down screw in advance arm, rotate distributor clockwise to limit of advance arm slot, then slowly rotate distributor counter-clockwise until contacts begin to open, tighten hold-down screw. Check Fuel Compensator setting. Timing (Using Synchroscope) - Recommended method. Mark flywheel with white chalk or paint, connect at #8 spark plug. Idle engine and adjust distributor as directed above. Fuel Compensator Setting - Road test car and note performance when accelerating from 10-15 M.P.H. with wide open throttle on level road (warm engine). Slight ping should be evident. To adjust, loosen hold-down screw, rotate distributor one graduation on scale counterclockwise (if no ping), clockwise (if ping too severe), repeat test. Final setting should not be more than 3/4" before "UDC. 1-8/" mark on flywheel. - 1 -

1940 Hudson Eight Electrical Schematic - 2 -

CARBURETOR Carter Model WDO, Type 430-S (Model 40, 43), 455-S (1940 Eight). 1" (430-S), 1-1/4" (455-S), Dual (double barrel), downdraft type with Fast Idle & Automatic Choke. Flange Gasket Note - Eight gaskets used on all carburetors. Idle Adjustment - With engine warm and running at slow idle speed (choke valve wide open, fast idle inoperative), set throttle stop-screw for 7 MPH idle speed. Adjust idle adjusting screws (2 used, 1 for each barrel) in succession until engine fires smoothly. Final setting should be 1/4-1 turn (430-S), 1/2-1-1/2 turns (455-S) open for each idling adjusting screw. Readjust idle speed. NOTE - Car manufacturer recommends use of vacuum gauge. Adjust one screw at a time for highest steady gauge reading. Accelerating Pump Setting - Pump lever (under dust cover at top of carburetor) has 2 holes for pump link engagement. Adjust as follows: Outer Hole (Max. stroke) - Normal setting. Inner Hole (Min. stroke) - If less charge required. Float Level - 3/32" from top of float to gasket seat on cover (invert to check). CARB. EQUIPMENT Fast Idle: - Integral type (built-in carburetor). Fast Idle Setting - Turn fast idle adjusting screw in to secure.018" throttle opening with choke valve tightly closed. Automatic Choke: - Carter Climatic Control. Choke Setting - Thermostatic coil housing centered on piston plate housing reference mark. Air Cleaner: - AC #1528161 oil-wetted type Standard. #1628160 United heavy duty Oil-bath type Optional. Fuel Pump: - AC Type AK #1523289 diaphragm type Std. - Type AJ #1523936 fuel & vacuum pump Optional. Gasoline Gauge: - King-Seeley Electric. K-S Nos. Dash Unit - No. 8118 (1940 Early - White Lines), 7752 (1940 Later - White Diamonds). Tank Unit - No. 7550 (1939 Later Cars & 1940). BATTERY BATTERY: - National Type HT-19. 6 volt, 19 plate, 108 ampere hour capacity (20 hour rate). Starting Capacity - 135 amperes for 20 minutes. Zero Capacity - 300 amperes for 4.0 minutes. Five second voltage - 4.43 volts. Grounded Terminal - Positive (+) grounded to frame. Battery (Cont d) Engine Ground - Strap connector from rear motor support to frame. Dimensions - Length 1-13/4"; Width 7-1/4"; Height 7-1/16". Location - In engine compartment on left side. STARTER Auto-Lite Model - MAB-4103 & 4103A Armature - Auto-Lite MAB-2113 (All Models). Drive - Inboard Barrel Type Bendix Drive, No. A-1673 (MAB-4075), A-1684 (Others). Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM, 120-125 amperes, 5 volts Performance Data Torque R.P.M. Volts Amperes 0 ft. lbs 3700 5.5 60.6 1910 5.5 100 3.4 1100 5.0 200 6.6 695 4.5 300 10.15 420 4.0 400 15.8 Lock 3.0 582 22.5 Lock 4 0 775 NOTE - Lock torque figures correct without switch. Removal: - Flange (new heavier casting) mounted on left front face of rear motor support. To remove, take out flange mounting screws. Starting Switch - R-B-M Model 5607. Magnetic type switch. on starter, controlled by pushbutton on instrument panel Douglas #5751. NOTE-- Switch is new type. GENERATOR STANDARD Auto-Lite Model GEC-4801A. Third brush control with external vibrating voltage regulation. Ventilated by fan on drive pulley. Armature - GDZ-2006F (GEC). Maximum Charging Rate - (GDS Gen.) 33 amperes (cold), 27.5 amperes (hot), 8.0 volts, 30-35 MPH (GEC Gen.) 39-44 amperes (cold), 3350 RPM or approximately 43 MPH. Actual charging rate controlled by voltage regulator and dependent on battery condition. When checking generator output, ground generator "F" terminal to eliminate regulator action. Charging Rate Adjustment - Third Brush setting should be as follows: (GDS) I commutator bar minus 1 mica strip (Min.), I commutator bar (Max.) from nearest main brush; (GEC) 1 commutator bar (Min.), I commutator bar plus 1 mica strip (Max.) from nearest main brush. - 3 -

Generator Standard (Cont d) Performance Data - GDS-4801A Cold Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 920 0 6.4 960 4 6.6 1050 4 6.65 1120 8 6.8 1175 8 6.9 1280 12 7.0 1300 12 7.1 1430 16 3.2 1450 16 7.45 1640 20 7.4 1600 20 7.6 1900 24 7.6 1820 24 7.8 2320 28 7.8 2075 27.5 8.0 3200 33 8.0 2900 Performance Data - GEC-4801A Cold Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 960 0 6.4 1040 4 6.55 1060 4 6.6 1140 8 6.7 1160 8 6.8 1280 12 6.85 1280 12 6.95 1440 16 7.0 1400 16 7.15 1600 20 7.15 1550 20 7.35 1820 24 7.25 1700 24 7.55 2090 28 7.5 1890 28 7.75 2440 32 7.65 2100 32 7.9 3000 36 7.8 2375 34 8.0 3800 41 8.0 3350 Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes). Field Current - 1.65-1.82 amperes (GDS Gen.), 1.601.78 amperes (GEC Gen.) at 6.0 volts. Motoring Current - 5.10-5.45 amperes (GDS Gen.), 4.85-5.4 amperes (GEC Gen.) at 6.0 volts. Removal: - Pivot mounted at left front of engine. To remove, take out pivot and clamp bolts. Belt Adjustment: - Swing generator out until possible belt deflection midway between generator and fan pulleys is 3/4" (use straightedge across pulleys). GENERATOR SPECIAL EQUIPMENT SPECIAL GENERATORS:- AutoLite GEG-4801A, GEA-4803B, GEB-4802A, B. Two brush types with voltage and current regulation. Armatures - No. GEG-2006F (GEG Gen.), GDZ2006F (GEA Gen.), GEB- 2600F (GEB Gen.) Charging Rate Adjustment - None. Maximum Charging Rate - For each model as follows: Performance Data Model GEA-4803B Cold Hot Amperes Volts RPM. Amperes Volts RPM 0 6.4 780 0 6.4 840 4 6.6 870 4 6.6 935 8 6.8 960 8 6.8 1025 12 6.95 1050 12 6.95 1120 16 7.15 1140 16 7.15 1220 20 7.3 1230 20 7.3 1320 24 7.6 1320 24 7.6 1420 28 7.7 1410 28 7.7 1520 32 7.85 1500 32 7.85 1685 35 8.0 1570 35 8.0 1800 Models GEB-4802A, GEB-4802B ¹ Cold Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 560 0 6.4 600 4 6.6 630 4 6.6 675 8 6.8 700 8 6.8 750 12 7.0 775 12 7.0 840 16 7.2 845 16 7.2 930 20 7.4 920 20 7.4 1030 24 7.6 1000 24 7.6 1140 28 7.8 1075 28 7.8 1260 32 8.0 1150 32 8.0. 1400 ¹ - Before Serial No. 2V-000001. Model GEG-4801A Cold Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 780 0 6.4 820 5 6.6 870 5 6.6 900 10 6.8 960 10 6.8 990 15 7.0 1040 15 7.0 1080 20 7.2 1130 20 7.2 1170 25 7.4 1220 25 7.4 1270 30 7.6 1310 30 7.6 1380 35 7.8 1410 35 7.8 1510 40 8.0 1520 40 8.0 1680 Rotation-Counter - clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (GEA Gen.), 64-68 ozs. (GEB, GEG Gen.) with new brushes. Field Current - 1.57-1.75 amperes (GEA Gen.), 1.61.78 amperes (GEB, GEG Gen.) at 6.0 volts. Motoring Current - 4.45-4.9 amps. (GEA Gen.), 4-4.5 amps. (GEB), 4.7-5.2 amps. (GEG) at 6.0 volts. Removal & Belt Adjustment :- Same as for Std. Gen. - 4 -

REGULATOR STANDARD Auto-Lite Model VRD-4008B (1940 First Cars), VRR- 4001A (1940 Later Cars). Used with GDS-4801A & GEC-4801A Gen. Cutout Relay and vibrating Voltage Regulator in case on dash. Cutout Relay has special upper contacts for Generator Teleflash Signal control. NOTE - Regulator case cover is sealed. Serviced on exchange basis if seals not broken. Cutout Relay Cuts In - 6.4-7.0 volts (VRD), 6.4-6.6 volts (VRR) 825 RPM., 9.4 MPH. Cuts Out-.5-3.0 amperes (before Regulator Serial No. 2T- 000001), 1.5-4.5 amperes (after No. 2T-000001) (VRD) ; 4.2-4.8 volts with approximately 4-6 amperes discharge current (VRR). Contact Gap -.015 minimum with ground contacts closed (must open when main contacts close). Air Gap -.034-.038" (VRD),.031-.034" (VRR), at hinge end of core (ground contacts closed). Voltage Regulator Setting - 7.1-7.4 volts at 110º F. (all models). To Check (without breaking Seals) - Connect ammeter in charging line at regulator 'B' terminal, voltmeter between this terminal and ground. Operate generator at speed of 30 MPH charging battery until voltage is constant. Voltmeter reading should be within limits of 7.1-7.4 volts at 110º. To Adjust (with cover removed) - Change regulator armature spring tension by bending lower spring hanger slightly. Contact Gap -.010-.020" (VRD),.012" Min. (VRR) (armature against stop pin). Air Gap -.048-.0521t with contacts just opening. REGULATOR SPECIAL EQUIPMENT REGULATOR (SPEC. GEN.): - Auto-Lite VRP-4008A (GEG Gen.), VRP-4008B (GEA Gen.), VRP-4008C (GEB-4802A,B Gen.), VRP-4008D (GEB-4802B-2 Gen.). Cutout Relay and vibrating type Voltage & Current Regulator units in a single case on the dash. Same design as Standard VRR Regulator except for additional Current Regulator. Cutout Relay & Voltage Regulator All specifications same as for Std. VRR Type (above). Current Regulator Setting - 39-41 amperes-marked '40 on cover (VRP- 4008A), 34-36 amperes-marked '35' (VPP4008B, 8D), 31-33 amps. marked 32' (VRP-4008C). To Check - Connect test meters as for voltage check (above), operate generator at speed for maximum output, turn on lights so that generator charges at peak rate and current regulator operates, check ammeter reading which should agree with setting given above. Adjustment, Contact Gap, Air Gap - Same as for VRR Voltage Regulator unit as given above. LIGHTING Headlamps Hall "Sealed Beam" type. Upper and lower beams controlled by Beam Selector Switch on toe board. Headlamp Adjustment - With car unloaded, 25 from screen and upper beams lighted, aim each head-lamp so that center of hot spot is 31 below horizontal line at lamp center height, and hot spot centered on lamp ertical center-line. Beam Indicator - On upper left hand corner of instrument anel. Lighted whenever upper beams in use. Bonnet Side Panel Lamps - Used instead of parking bulb n headlamp. NOTE - To remove bulb, pull bulb socket out of lamp. Switches Lighting - Cole-Hersee Beam Selector - R-B-M No. 2467. Instrument - Douglas. Bulb Specifications Position Candlepower Mazda No. Headlamps (Export) 21-50 2520 Headlamps Sealed Beam Bonnet Side Panel, Radio 1-1/2 55 Instr., Spdmtr., Service 1-1/2 55 Beam Indicator & Signals 1 51 Stop & Tail 21-3 1158 License, Fender 3 63 Dome 15 87 Front Direction Signal bulb is 21-3 cp. Mazda No. 1154. The 3 cp. filament of this bulb is used in place of the regular parking (bonnet side panel) bulb (No. 55). MISC. ELECTRICAL SIGNAL LIGHTS: - Generator Charge and Oil Pressure Indicators. Hudson Teleflash Electric type. FUSES: - Lighting - 20 ampere. Lower fuse on fuse block on lower edge of instrument panel to right of steering column. Accessory-20 amperes. Top fuse on fuse block. - 5 -

Misc. Electric (Cont d) NOTE - Silver-plated fuses used. Twin Horns - 30 ampere on block on engine dash. Transmission Overdrive Control - 20 amp. On Relay. Direction Indicator - 10 ampere. In case on back of instrument panel near speedometer. Electric Clock - 2 ampere on back of clock. HORNS: - Sparton - Twin, vibrator type, air trumpet horns standard. Operated by relay. Horn Relay: R-B-M Model 4790. Mounted on horn bracket. Contacts Close - 3.5-4.5 volts. Current Draw 3/4 amp. ENGINE ENGINE SPECIFICATIONS:--8 cylinder, 'L' head type. Bore - 3". Stroke - 4-1/2" Displacement - 254 cubic inches. Rated HP - 28.8. Developed Horsepower - 128 at 4200 RPM. Compression Ratio - 6.5-1. Heads are Cast Iron. Compression Pressure - 120 lbs. at cranking speed of 125 RPM. Vacuum Reading-Steady 18-21" idling at 7 MPH. PISTONS: - Own Lo-Ex aluminum alloy, 'T' slot, cam ground type. Use finished replacement pistons. Weight - 10.5 ozs. (stripped). Length - 3 3/16". Removal - Piston and rod assemblies may be removed from above or below. Clearance - Top.016". Skirt.001-.002". Original Bore Sizes & Replacement Pistons: - See Hudson Service Notes for complete data. Fitting New Pistons: - Use.0015" feeler 1/2" wide inserted between piston and cylinder wall on side opposite slot at right angles to pin. Pull to withdraw feeler must be within 3-4 lbs. Installing Pistons: - Slot away from camshaft. PISTON RINGS: - 2 compression, 2 oil rings (1 above pin, 1 below pin). Rings positioned by pin in groove. Models 44, 45, 47 Ring Width End Gap Side Clearance Compression 3/32".009-.011".001" Oil Cont. (# 1) 3/16".009-.011".001" Oil Cont. (#2) 5/32".009-.011".001" Replacement Rings:--See Hudson Service Notes for data. PISTON PIN: - Diameter - 3/4". Length - 2-7/16". Floating Type. Retained by locking rings. See Hudson Service Notes for Pin Servicing data. Pin Fit in Piston -.0003" clearance (hand push fit) with piston heated to 200º F. Pin Fit In Rod Bushing - 0003" clearance. Piston Rings (Cont d) Replacement Pins: - Standard,.002",.005",.010" oversize. CONNECTING ROD: - Weight 30 ozs. Length 8-3/16". Upper Bearing (Piston Pin Bushing) - Bronze. Crankpin Journal Diameter - 1-15/16". Lower Bearing - 'Bermax' alloy spun type. Exchange rods furnished Standard &.010" undersize. See Crankshaft Size Code in Hudson Service Notes for bearing sizes. Clearance -.001". Side play -.006-.010". Bearing Adjustment: - None (no shims). Replace rods. See Hudson Service Notes for Palnut (locknut) data. Installing Rods: - Offset. Install rods with widest half of bearing toward rear (#1, 3, 5, 7), toward front (# 2, 4, 6, 8). Oil scoop on all rods toward camshaft. CRANKSHAFT: - 5 bearing, integral counterweights. Journal Diameters - #l, 2-9/32"; #2, 2-5/16"; #3, 2-11/32"; #4, 2-3/8"; #5, 2-13/32". Bearings - Bronze-backed, 'Bohnolloy' type. See Crankshaft Size Code Note in Hudson Service Notes for original bearing sizes. Clearance - 001". Bearing Adjustment: - Shims. See Hudson Service Notes. End Thrust: - Taken by center bearing. Replace bearing if endplay excessive. Endplay -.006-.012". CAMSHAFT: - 5 bearing, gear driven. Journal Diameters - #1, 2.029"; #2, 1.998"; #3, 1.966"; #4,1.935"; #5, 1.498". Bearings - Babbitt type. Clearance -.0025". End Thrust: - Thrust washer between camshaft flange and crankcase. Spring loaded button in camshaft hub bears against thrust plate on gear cover. Timing Gears: - Crankshaft gear cast-iron. Camshaft gear GE or Continental Diamond Fiber Bakelite. 1941 Type Timing Gear Set can be installed on these models (tooth angle redesigned to provide quieter operation). Refer to Hudson Service Notes. Camshaft Setting: - Mesh marked crankshaft gear tooth between two marked teeth on camshaft gear. VALVES: Head Diameter Stem Diameter Length Intake 1-1/2" 11/32" 5-3/32" Exhaust 1-3/8" 11/32" 5-3/32" Seat Angle Lift Stem Clearance Intake 45º 11/32".0025" Exhaust 45º 11/32".004" Valve Guides: 2-9/16" long. Install with top 1/16" below top of block and finish ream to size. Valve Springs: - Dampeners (originally used on bottom of Springs) should be omitted when valves serviced. Spring Pressure Free Length Valve Closed 40 lbs. 2" Valve Open 80 lbs. 1-21/32" - 6 -

Valves (Cont d) NOTE - Replace if pressure below 34 lbs. at 2". Valve Lifters: - Roller shoe type, fitted in removable guides. See Hudson Service Notes for lifter removal. VALVE TIMING Tappet Clearance: -.006" Intake,.008" Exhaust, hot & idling. See Hudson Service Notes for Fender Plate Removal Valve Timing: - See Camshaft Setting above. Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valves - Open 50º BLDC. Close 18º44' ATDC. These figures correct with.010" tappet clearance. Valve Timing Check - With.010" tappet clearance #1 intake valve should open with piston 10º40, or.0494" BTDC when a point on the flywheel approx. 3.97 teeth before 'UDC.1-8/' mark lines up with indicator. Reset tappet clearance.006" hot and idling. LUBRICATION LUBRICATION: - Duo-flo (pressure & positive splash). Oil Pump: - Oscillating plunger type, gear driven by camshaft. Mounted on right side of crankcase. Normal Oil Pressure - 3 lbs. (no gauge). Oil Pressure Regulator: - Located on right side of crankcase at rear. Opens at 3 lbs. Not adjustable. Oil Pressure Indicator: - Teleflash Oil Pressure indicator. Crankcase Capacity: - 7 quarts (refill). NOTE - Install 2 quarts additional oil in upper tray when pan installed. COOLING Water Capacity: - 18 quarts (1940). See Hudson Service Notes for radiator core removal. Water Pump: - Centrifugal, belt driven, packless type. Removal - Drain water, remove fan belt, disconnect pump hoses, remove mounting bolts and lift off fan and pump assembly. Thermostat: - Fulton. In cylinder head water outlet. Setting - Starts to open 150-155ºF. Fully open 185º. Temperature Gauge: - King-Seeley Electric K-S Nos. Dash Unit - No. 8120 (1940 Early - White Lines), 7755 (1940 Later - White Diamonds). CLUTCH CLUTCH: - Own make. Single plate, cork insert type operating in oil. Overdrive Cars equipped with heavier clutch housing and larger redesigned disc Clutch (Cont d) Driven Member - Cork Insert type. Cork thickness,.077". Inside Diameter - 6-1/2". Outside Diameter - 10". No. of corks - 108. Pedal Adjustment: - 1-1/2" free travel. Adjust yoke on lower end of pedal connector link. Check Automatic Clutch Control & Hill-holder (if used). Clutch Oil Servicing: - See Hudson Service Notes. Removal:-Remove transmission (see below), drain clutch oil, take out mounting screws in clutch cover rim, remove clutch assembly from below. Automatic Clutch Control: - Electric type. Optional. TRANSMISSION TRANSMISSION: - Own Make. Constant-mesh, helical gear (second & high), sliding spur (low & reverse). Transmission Control: - Hudson 'Handy-Shift' type. Removal: Remove front cushion and push seat back, remove accelerator pedal. Remove floor mat and transmission hole cover. Disconnect front universal joint. Remove clutch pedal return spring, assist spring, and cross-shaft. Release transmission side bumpers and rods, disconnect handy-shift controls at transmission, remove speedometer cable. Raise front end of car, remove lower flywheel guard and engine rear mounting bolts, raise rear end of engine off frame. Remove clutch housing-to-engine mounting bolts, pull transmission back and lift out. NOTE - Transmission can be taken out without disturbing clutch housing by taking out transmission-to-clutch housing bolts. Installation Note - Wrap one strand of soft wire around throw-out bearing oil seal to prevent leather curling over when transmission installed. Remove wire after transmission installed. OVERDRIVE Overdrive:-Warner Model AS13-R6 with electrical 'kickdown' control. Optional equipment. Overdrive Transmission Removal - Same as Standard Transmission (above) except overdrive solenoid wires and control cable must also be disconnected. Overdrive Solenoid-Delco - Remy No. 1569. Throttle Control Switch - R-B-M Model 6013. Adjust so contact washer on accelerator linkage just contacts switch plunger with throttle wide open. Control Relay - Auto-Lite Model HR-4201. - 7 -

UNIVERSALS Spicer. Needle Bearing type. Model Nos. as follows: 1271-101 (1940 exc. 47 without Overdrive), 1281-101 (1940 47 Std.). Rear - 1278-101 REAR AXLE REAR AXLE: - Own Make. Semi-floating spiral bevel gear type with Hotchkiss drive. Ratio - 4 1/9-1 (Standard, Optional on Overdrive), 4 5/9-1 (Standard on Overdrive, Optional on regular transmission). Backlash -.0005-.003". Screw adjustment. Removal: - Disconnect drive shaft at rear universal. Remove axle shafts (see below) and cap-screws on carrier flange. Pull carrier assembly out. Axle Shaft Removal: - Remove wheel and hub (use screw type puller only), remove 4 nuts on bearing cap bolts, push bolts out of backing plate, remove cap (without disturbing brake link), remove shims, pull axle shaft and wheel bearing out. Wheel Bearing Adjustment: - Controlled by shims under bearing cap. To adjust, remove bearing cap (see Removal directions above), add or remove shims equally at both wheels. Endplay -.002-.004". SHOCK ABSORBERS Delco. Direct Acting, Hydraulic type. Model Nos. as follows: Front - 1007-C. Rear- 1008-S. FRONT SUSPENSION Front Suspension: Independent, linked parallelogram type with coil springs and Autopoise Control. Kingpin Inclination 4º36' crosswise. Caster - 0º (Neg. ¼º to Positive ¼º). Adjustable. Camber - Positive ¼º to Positive ¾º. Adjustable. Toe In - 0-1/16". Loosen clamp at outer end of each tube (adjust tubes equally). Steering Geometry - Inner wheel 24º. Outer 20º50'. STEERING GEAR Steering Gear: Gemmer Model 335 Worm-and-Roller type with "push-pull" adjustments. BRAKES BRAKES:-Service. Bendix hydraulic, duo-servo, single anchor type with eccentric adjustment. Mechanical follow-up (pedal linked to hand brake cables) provided. Hand lever applies rear service brakes. Drums - Alloy steel. Diameter 11-1/16". Lining - Moulded (primary), woven (secondary). Thick. 7/32". Width 13/4". Length per wheel 23-15/16". Clearance - 010" at heel and toe of each shoe. Hand Brake: - See Service Brakes above. Hill-Holder: Optional. - 8 -

H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS HUDSON 6 MODELS 1941-1942

H U D S O N T E C H 2004

1941-1942 Hudson Six Tune-up Specifications 1941 1942 Model Serial No. Model Serial No. Six Traveler 10T 10-101 20T 20-101 Six Deluxe 10P 10-101 20P 20-101 Super Six 11 11-101 21 20-101 Commodore Six 12 12-101 22 22-101 Business Cars 10C 10-101 20C 20-101 Big Boy 18 18-101 28 28-101 See Model 10 Note (below) See Model 20 Note (below) MODEL 10 NOTE:-3"x 5 engine optional (when this engine used all equipment listed below for Model 11 used on these cars). Serial No. plate carries identification prefixes as follows: 3"x 4-1/8" Eng. 'T' (Traveler), 'P' (Deluxe), 'C' (Commercial). 3"x5" Engine additional letter 'L' thus: 'TL', 'PL', 'CL'. MODEL 20 NOTE:-3" x 5 engine optional (when this engine used all equipment listed below for Model 21 used on these cars). Serial No. plate carries identification prefixes as follows: 3-x41/8" Eng. 'T' (Six), P' (Deluxe), 'C' (Commercial). 3 x 5 Engine an additional letter 'L' thus: 'TL','PL','CL'. SERIAL NUMBER: - First No. for each model as shown in table above. Stamped on plate on right front door hinge pillar post. NOTE - First two figures of number indicate model thus: 10-101. ENGINE NUMBER: - Same as Serial No. On top of cylinder block between #1 and 2 exhaust flanges. TUNE-UP COMPRESSION: Ratio & Pressure-As follows: Model Ratio Pressure (At 125 RPM) 10, 20 7.25-1 125 lbs. 10, 20 (3x5" Eng.) 6.5-1 120 lbs. 11, 12,18 ('41) 6.5-1 120 lbs. 21, 22, 28 ('42) 6.5-1 120 lbs. VACUUM READING: - 18-21" steady idling at 600 RPM. FIRING ORDER: - 1-5-3-6-2-4. See diagram. SPARK PLUGS: - Champion Spec. J9 Hudson. 14 MM. Gaps -.032" Opt l. Plug Note - Champion J-5 (Hotter) for continuous slow speed service or J-10 Commercial (Cooler) for continuous high speed service. IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.020" Cam Angle 35, (Closed). Automatic Advance - 11.75º max. at 1570 RPM (dist). Vacuum Advance - 7.5º distr. with 10" vacuum. IGNITION TIMING: See Ignition Timing. Std. Setting - 1/2" flywheel travel BTDC. with 2nd graduation on flywheel ahead of mark "UDC.I.-6/" 11 at indicator on left front face of rear motor support above starter. CARBURETION: See Carburetor & Carb. Equipment. Idle Setting (Single Carb.) - Idle screw ¾-1½ turn open. Idle speed 580-600 RPM. Idle Setting (Dual Carb.) -Both idle screws ¼-1¼ turn open (461-S), ½-1½ turn open (501-S). Idle speed 580-600 RPM. Float Level (Single Carb.) - 3/8" from top of bowl cover projection to top of soldered seam on free end of float with valve seated (invert to check). Float Level (Dual Carb.) - 3/32" (461-S), 1/8" (501- S) from gasket seat on bowl cover to top of float at each end (invert to check). Accelerating Pump (Single Carb.) - Lower hole (medium stroke) Normal. Inner hole (Summer), Upper hole (Winter) for temperature extremes. Accelerating Pump (Dual Carb.) - Outer hole (max. stroke) Normal. Inner hole (min.) when required. Fuel Pump Pressure: 3½ lbs. max. (AF), 4½ lbs. max. (AK). MANIFOLD HEAT CONTROL: Models 10, 18 ('41), 20,28 (142). Manual type. Located on manifold behind carburetor. Setting - Arrow on valve cover pointing to "W" cast on top of manifold. Correct for Summer & Winter. Models 11, 12 ('41); 21,22 ('42) - Automatic thermostatic type. No adjustment. See that valve operates freely. NOTE - This type used on Models 10 and 20 with 3"x5" Engine. VALVES: See Valve Timing. Tappet Clearance (1941) -.006" Intake, 008" Exhaust Hot and idling except Model 10 with label on valve cover specifying.010" Intake,.012" Exhaust (Hot). Remove right front fender plate for access to valves. Tappet Clearance (1942 20T, 20P, 20C).010" Intake,.012" Exhaust with engine Hot and Idling. Tappet Clearance (1942 20TL, 20PL, 20CL, 21, 22, 28C) -.006" Intake,.008" Exhaust, Hot and Idling. NOTE: 20TL, 20PL, and 20CL - 3" x 5" engine. STARTING: See Battery, Starter, Generator, Regulator. - 1 -

1941-1942 Wiring Diagrams - 2 -

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IGNITION Ignition Switch: - Mitchellock Model 24-B, No. 8797. Ignition Lock - Briggs & Stratton B & S No. 50184. Key Series--H601 to H1100. Groove-No. 1. X, g COIL: Auto-Lite Model IG-4098. Mounted on the dash. IMPORTANT-Coil is hooked up reversed from conventional manner (as shown on 1940 diagram) with switch lead connected to terminal on high tension terminal end of coil, breaker lead to terminal - on opposite end. Will not operate satisfactorily if connected otherwise. Ignition Current - 2.5 amperes idling, 4.5 stopped. CONDENSER: Auto-Lite Part No. IGW-3075C. Capacity-.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGW-4203A. Single breaker, 6 lobe cam, full automatic advance type with auxiliary vacuum spark control. Breaker Gap -.020". Cam Angle or Dwell - 35º closed, 25º open (distr.) Breaker Arm Spring Tension - 17-20 ounces. Rotation - Counter-clockwise viewed from above. Distributor Automatic Advance Engine Degrees R.P.M Degrees R.P.M. Start 400 0 800 3 700 6 1400 6 1000 12 2000 9 1300 18 2600 11.75 1570 23.5 3140 Vacuum Spark Control - On distributor hold-down plate, linked to quadrant scale on distributor. Provides additional advance at speeds above idling except when engine accelerated or operated with wide open throttle (spark retarded by return spring within unit). Vacuum Advance Distr. Degrees Eng. Degrees Vacuum (" of HG) Start 0º 6¾" 4º 8º 8½" 7.5º 15º 10" Fuel Compensator - Manual adjustment for octane rating of fuel used. See Ignition Timing for setting. Distributor Removal: - Mounted at top rear of cylinder head. To remove, disconnect vacuum line, take out cylinder head stud nuts on hold-down plate. IGNITION TIMING IGNITION TIMING: - Initial Setting - ½" (two spaces) BTDC. for fuel of approximately 72 Octane rating. Flywheel Marks - ''UDC.1-6/'' at TDC with 4 graduations (¼" apart) ahead of this mark. Timing - With #1 piston on compression, turn engine over until second graduation before flywheel mark "UDC.1-6/" lines up with pointer on left front face of rear motor support above starter. Loosen vacuum advance diaphragm screw on quadrant scale, rotate distributor counter-clockwise to limit of slot. then slowly rotate clockwise until contacts begin to open, tighten diaphragm screw securely. Check Fuel Compensator Setting below. Timing (Using Synchroscope) - Recommended method. Mark flywheel with white chalk or paint. Idle engine, adjust distributor (above). Fuel Compensator Setting - Road test car (engine warm). When running at 8 MPH slight ping should occur between 10-15 MPH when accelerating with wide open throttle. To adjust, loosen vacuum unit link screw on distributor quadrant, rotate distributor one graduation on quadrant scale clockwise (if no ping), counter-clockwise (if ping too severe). Final setting must not be more than 1" (4th graduation) before "UDC.1-6/" flywheel mark. CARBURETOR SINGLE BARREL (Models 10-see Note, 18, 20-see Note, 28) - Carter Model WA-1, Type 454-S. 11/4" Single Barrel, downdraft type with Fast Idle and Carter Climatic Control automatic choke). Model 10, 20 Note - Cars with 3"x 5 Engine have dual carburetor (same as Models 11, 21 below). Idle Adjustment - With engine warm, set throttle stopscrew for 600 RPM hot or slow idle speed (fast idle inoperative), adjust idle adjusting screw so engine fires smoothly and vacuum reading at maximum (screw ¾-1½ turns open-turn screw in for leaner setting), recheck idle speed. Accelerating Pump Setting - Pump arm has three holes for pump link engagement. Set as follows: Lower Hole (med. stroke) - Normal setting. Inner Hole (min.)-hot weather or hi-test fuel. Upper Hole (max.) 0 -Cold weather or low-test fuel. Float Level - 3/8" from top of bowl cover projection, to top of soldered seam on float at free end. CARBURETOR DUAL (DOUBLE BARREL) (Models 11, 12,21,22): Carter Model WDO, Type 461- S (1941 before No. 2150), Type 501-S (1941 After No. 2150 & 1942). 1 Dual (double barrel), downdraft types with Fast Idle and Carter Climatic Control (automatic choke). NOTE - Type 461-S, only, has "Slow-Closing Throttle" dashpot device. Idle Adjustment - With engine warm, set throttle stopscrew for 580-600 RPM hot or slow idle speed (fast idle inoperative). Adjust both idle screws (two used, one for each barrel) in succession until engine fires smoothly. - 4 -

Carburetor Dual (Cont d) Final setting should be 1/4-11/4 turn open (461-S), ½-1½ turn open (501-S) from inner seated position. Turn screws in for leaner mixture. If vacuum gauge used, adjust for highest steady reading of the gauge. Readjust stop-screw for correct idling speed. Accelerating Pump Setting - Pump lever (under dust cover on bowl cover) has two holes for pump link engagement. Adjust as follows: Outer Hole (max. stroke) - Normal Setting. Inner Hole (min. stroke) - If less charge required. Float Level - 3/32" (461-S), 1/8" (501-S) from top of float to bowl cover with valve seated. CARB. EQUIPMENT Fast Idle (454-S): Integral with carburetor. Setting - Adjust by bending connecting link offset for 5/8" choke valve opening with throttle stop-screw against (not on) first step of fast idle cam. Fast Idle (461-S, 501-S): Integral with carburetor. Setting (461-S) - With choke valve closed, adjust fast idle screw for.018" throttle opening. Setting (501-S) - With choke valve closed and fast idle screw on high lobe of fast idle cam, turn fast idle screw in until throttle opening is.045". Automatic Choke: - Carter Climatic Control. Setting (454-S, 461-S) - Centered (at index mark). Setting (501-S) - One Notch Lean (supersedes "Centered" setting originally specified for this model.) Air Cleaner: - AC oil wetted types. Car Cars with Replacement Model Standard Drive-Master Filter Elem. 10,18,20,28 1528159 1542384 Type #1 11,12,21,22 1528161 1542385 Type #2 Fuel Pump: AC Type AF, No. 1523753 (10,18,20,28 Pass. Cars); Type AK, No. 1523289 (All others). Pump Exchange No. 509 (Type AF), 499 (Type AK). Gasoline Gauge: - King-Seeley Electric. K-S No. 8305 (Dash Unit-stamped 'G'), No. 7550 (Tank Unit). BATTERY BATTERY: - National, Type HT-17. 6 volt, 17 plate, 96 ampere hour capacity (20 hour rate). Starting Capacity - 120 amperes for 20 minutes. Zero Capacity - 300 amperes for 3.5 minutes. Five second voltage - 4.24 volts. Grounded Terminal - Positive to frame. Engine Ground - Strap (rear motor support to frame). Dimensions Length, 10-9/16, Width, 7¼. Height, 7-13/16". Location - On left side under engine hood. STARTER Auto-Lite Model MZ-4092. Armature No. MZ-2138. Drive - Inboard Barrel type Bendix No. A- 1684. Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM, 125 amperes, 5.4 volts. Performance Data MZ-4092 Torque R.P.M. Volts Amperes 0 ft. lbs 4300 5.5 70 2.55 1325 5.0 200 4.95 750 4.5 300 7.65 220 4.0 400 7.8 Lock 3.0 420 11.8 Lock 4.0 560 Removal: - On left front face of rear motor support. To remove, take out flange mounting screws. Starting Switch: - A-L Model SS-4001. Magnetic type. Auto-Lite Model GDS-4801A (Std. 10, 18, 20, 28); GEC-4801A (Std. 11, 12, 21, 22, 20P Conv. Sedan, 20 with 3" x 511 Eng., All Cars with DriveMaster). Third brush control type with vibrating voltage regulator. Ventilated by fan on drive pulley. Armature - GDF-2006F (ODS), GDZ-2006F (GEM) Maximum Charging Rate (GDS) - 32-34 amperes (cold), 8.0 volts, 2900 RPM or approx. 35 MPH. (GEC) 39-43 amperes (cold), 8.0 volts, 3350 RPM or approx. 43 MPH. Actual charging rate controlled by Voltage Regulator (see Regulator). Ground generator 'F' terminal, when checking generator output. Charging Rate Adjustment - See Regulator. Third brush setting (GDS) 1 commutator bar minus 1 mica strip min., I commutator bar max. from insulated (nearest main brush). (GEC) 1 commutator bar min., 1 commutator bar plus 1 mica strip max. Adjust by shifting 3rd brush. Performance Data - GDS-4801A Cold Hot Amperes Volts R.P.M. Amperes Volts R.P.M 0 6.4 920 0 6.4 960 4 6.6 1050 4 6.65 1120 8 6.8 1175 8 6.9 1280 12 7.0 1300 12 7.1 1430 16 7.2 1450 16 7.35 1640 20 7.4 1600 20 7.6 1900 24 7.6 1820 24 7.8 2320 28 7.8 2075 27.5 8.0 3400 338 8.0 2900-5 -

Starter (Cont d) Performance Data - GEC-4801A Cold Hot Amperes Volts R.P.M. Amperes Volts R.P.M 0 6.4 960 0 6.4 1040 4 6.55 1060 4 6.6 1140 8 7 160 8 6.8 1280 12 6.85 1280 12 6.95 1440 16 7.0 1400 16 7.15 1600 20 7.15 1550 20 7.35 1820 24 7.25 1700 24 7.55 2090 28 7.5 1890 28 7.75 2440 32 7.65 2100 32 7.9 3000 36 7.8 2375 34 8.0 3800 41 8.0 3350 Rotation -Counter- clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes) Field Current - 1.65-1.82 amperes (GDS), 1.60-1.78 amperes (GEC) at 6.0 volts. Motoring Current - 5.10-5.45 (GDS), 4.85-5.4 (GEC) amperes at 6.0 volts. Removal: - Pivot mounted at left front of engine. To remove, take out pivot and clamp bolts. Belt Adjustment: - 3/41, slack midway between pulleys. REGULATOR REGULATOR: - Auto-Lite VRR-4001A. Cutout Relay and vibrating Voltage Regulator in case on dash. Cutout Relay has extra set of contacts for Generator Teleflash Indicator control. NOTE - Regulator enclosed In closefitting metal cover on dash. Cutout Relay Cuts In - 6.4-6.6 volts, 825 RPM. 9.4 MPH. Cuts Out - 4.2-4.8 volts (approx. 4-6 amps. disch.). Contact Gap -.015" min. ground contacts closed (ground contacts open when main contacts close). Air Gap - 031-.034" at hinge end of core with contacts open (ground contacts closed). Voltage Regulator Setting - 7.1-7.4 volts at 70º F. To Check (without breaking seals) - Connect ammeter in charging line at regulator 'B' terminal, voltmeter between this terminal and ground. Operate generator at speed of 30 MPH charging battery until voltage is constant. Voltmeter reading should be within limits of 7.1-7.4 volts at 70º F. To Adjust (with cover removed) - Change regulator armature spring tension by bending lower spring hanger slightly. ). Contact Gap -.012 minimum (armature against stop). Air Gap -.048-.052 with contacts just opening. LIGHTING LIGHTING: - Headlamps - Hall 'Sealed Beam' type. Headlamp Adjustment - Aim upper beam of each headlamp straight ahead with hot spot centered on horizontal line 3" below lamp center height. Beam Indicator - Red pilot bulb on speedometer dial. Lighted with Country (upper) beam in use. Direction Indicator - Optional equipment.. Switches 1941 Lighting - Douglas. Hudson No. 147835. Beam Selector - R-B-M Model 2484. Instrument - R-B-M. Hudson No. 160092. Switches 1942 Lighting - Douglas. Hudson Part No. 200417. Beam Selector - R-B-M. Hudson Part No. 164439. Instrument - R-B-M. Hudson Part No. 160092. Bulb Specifications 1941 Position Candlepower Mazda No. Headlamps Sealed Beam Side Panel (Parking) 1½ 55 Fender Lamp (see Note) 3 63 Speedometer, Elec. Clock 1½ 55 Generator & Oil Signals 1½ 55 Ign. Lock, Mech. Clock 1 51 Beam & Direct. Indic 1 51 Stop & Tail 21-3 1154 Rear License 3 63 Dome 15 87 NOTE - 21 cp. No. 1129 for Direction Indicator. Bulb Specifications 1942 Position Candlepower Mazda No. Headlamps Sealed Beam Bonnet Side Panel (Park) 1.5 55 Fender Lamp (see Note) 3 63 Ign. Lock, Clock 1.5 55 Indicators (Gen.,Oil,Beam,Dir.) 1 51 Speedometer 1 51 Stop & Tail 21-3 1154 Rear License 3 63 Dome & Courtesy 15 88 NOTE-No. 1158 21-3 cp. used with Direction Indicator MISC. ELECTRICAL SIGNAL LIGHTS: - Generator Charge and Oil Pressure Indicators used. Hudson Teleflash Electric type. FUSES: - Lighting - 30 ampere. Lower fuse on fuse block on lower edge of instrument panel to right of steering column. Accessory - 30 amp. Top fuse on block. NOTE - Silver-plated fuses used. 30 amp. fuse supersedes 20 ampere fuse used on early cars. - 6 -

MISC. ELECTRICAL (Cont d) Twin Horns (1941) - 30 ampere. On engine dash. Direction Indicator - 10 amp. near speedometer. Electric Clock - 2 amp. in case behind clock. NOTE - Feed wire for electric clock on early cars connected to fuse block 'Bat' terminal. Should be changed to accessory 'X' terminal (as shown). CIRCUIT BREAKER: - Used on Drive-Master Cars only. On fuse block. Protects Drive-Master circuit only. HORNS: Single - Schwarze Electric type. Std. on Models 10T, 18 (1941), 20T, 28 (1942). Twin - Sparton air electric type operated by relay. Fuse on dash. (Air Gap).026-.030" high pitch (short),.032-.035" low pitch (long). Horn Relay: - R-B-M Model 6004. On dash. Contacts Close 3-4 volts (relay upright, terminals down). ENGINE ENGINE SPECIFICATIONS (10T, 10P, 10C 1941; 20T, 20P, 20C 1942): 6 Cylinder, "L" Head type. Bore - 3". Stroke - 4-1/8". Displacement - 175 cubic inches. Rated Horsepower - 21.6. Developed Horsepower - 92 at 4000 RPM. Compression Ratio - 7.25-1 cast-iron head. Compression Pressure - 125 lbs. at 125 RPM (cranking speed). 90 lbs. minimum (10 lbs. max. variation). Vacuum Reading - Steady 18-21" idling at 600 RPM. ENGINE SPECIFICATIONS (10TL, 10PL, 10CL, 11, 12,18 1941; 20TL, 20PL, 20CL, 21, 22, 28 1942): 6 Cylinder, "L" Head type. Bore-3", Stroke - 5". Displacement - 212 cubic inches. Rated HP - 21.6. Developed Horsepower - 102 at 4000 RPM (all models except Models 18, 28), 98 at 4000 RPM (Models 18, 28 only). NOTE - Model 18 & 28 Engines equipped with single carburetor. Dual carburetor used on all other models. Compression Ratio - 6.50-1 cast-iron head. Compression Pressure - 120 lbs. at 125 RPM (cranking speed). 90 lbs. minimum (10 lbs. max. variation). Vacuum Reading - Steady 18-2", idling at 600 RPM. PISTONS: Lo-Ex aluminum alloy (1941), Cast Alloy (1942), cam ground type. Use finished replacement pistons. Weight - 10.5 ozs. (stripped). Length 3-3/16". Removal - Pistons and rods removed from above. Clearance-Top.016". Skirt.0005-.001". See Fitting New Pistons below. Fitting New Pistons: - Use.0015" feeler 1/2" wide inserted between piston and cylinder wall on side opposite slot at right angles to pin. Pull to withdraw feeler must be within 3-4 lbs. Installing Pistons: Slot away from camshaft. PISTON RINGS: - Two compression, two oil rings (one above pin, one below pin) per piston. Rings are square end type. Rings pinned to prevent rotation. Rings cut and notched to fit pin (clearance on pin equal to ring end gap). Ring Width End Gap Side Clearance Compression 3/32" 009-011".001" Oil (upper) 3/16" 009-.011".001" Oil (lower) 5/32" 009-.011".001" PISTON PIN: - Diameter - 3/4". Length - 2-7/16". Floating type. Retained by locking rings. Pin Fit in Piston -.0003" clearance (hand push fit with piston heated to 200º F. Pin Fit in Rod Bushing - 0003" clearance. Replacement Pins: - Standard and.002",.005",.010" oversize. CONNECTING ROD: - Weight - 30¾ ozs. (3" x 41/8" engines), 30 ozs. (3" x 5" engines). Length - 8-5/8" (3" x 41/8" engines), 8-3/16" (3" x 5" engines). Crankpin Journal Diameter - 1-15/16". Lower Bearing - Lead alloy-lined (1941), babbitt lined (1942), Spun type. Exchange Rods furnished Standard Size and.010" Undersize. Clearance -.001". Sideplay -.006-.010". Bearing Adjustment: - None (no shims). Do not file rods or caps. Installing Rods: - Lower end of rods offset. Install rods with widest half of bearing toward the rear (# 1, 2, 4), toward front (# 3, 5, 6). Oil scoop on low end of rod toward camshaft. CRANKSHAFT: - 3 bearing, Integral counterweights. Journal Diameters - #1, 2-11/32"; #2, 2-3/8"; #3, 2-13/32". Bearings - Bronze-backed, babbitt-lined type. NOTE - No shim pack is used. Palnuts used in place of cotter pins to lock bearing cap nuts. Clearance -.001". Bearing Adjustment: - None (no shims). Do not file caps. End Thrust: - Taken by center bearing. Replace bearing if endplay excessive. NOTE - If new unfinished bearings installed, thrust face for center bearing must be faced for proper endplay. Endplay -.006-.012". CAMSHAFT: - Three bearing, gear driven type with new type bearings and timing gears. Production Change Models 10T, 10P, 10C (1941) - Two types of Camshaft used on the 3" x 41/8" Engine on these models only. 1942 Note - Camshaft Bearing Clearance and Timing Gear Backlash reduced from that used on previous models for quieter operation of valve mechanism. No valve spring dampeners used. - 7 -

CAMSHAFT (Cont d) Journal Diameters - #1, 2.000"; #2, 1.968"; #3, 1.5625". Bearings - New type steel-backed, 'Bermax' (babbitt) lined bushings (formerly solid type babbitt). Clearance-.002-.0025" (1941),.001-.0025" (1942). End Thrust: - Thrust washer between camshaft flange and crankcase. Spring loaded button in camshaft hub bears against thrust plate on gear cover. NOTE- Service thrust washer available which can be split and installed without removing camshaft. Timing Gears: - Crankshaft gear cast-iron, camshaft gear laminated fiber. Tooth shape changed to 20º pressure angle (was 14½º) to provide quieter operation and longer gear life. Gears can be identified by figure 20 stamped on front face (crankshaft gear carries additional FRONT mark to Insure correct installation). Gears may be installed in sets only (not singly) on earlier car models (new type gears similar to previous type except for tooth pressure angle). NOTE - Camshaft gear available in.008" Oversize (can be distinguished from Standard Size by spot of yellow paint on front face). Backlash -.002-.004". Camshaft Setting: - Mesh marked crankshaft gear tooth between two marked teeth on camshaft gear. VALVES:- Head Diameter Stem Diameter Length All valves 1-3/8" 11/32" 5-11/32" Seat Angle Lift Stem Clearance Intake 45º 11/32".0025" Exhaust 45º 11/32".004" Valve Guides: Removable type. New longer exhaust guide used in 1942 (counterbore at top increased) and lengthened approx. 3/8", lower end of guide has been lengthened approx. 3/8" to compensate for increased length of counterbore at top). This new guide designed to reduce tendency of exhaust valves to stick due to fuel or oil gum formations at upper end of valve stem. Valve Springs: - Cadmium plated springs used with dampener installed on bottom with open side toward cylinder (Dampener used on 1941 cars only) Use suitable tool to install valve spring and seat NOTE - Car manufacturer recommends that dampeners be omitted whenever valves are serviced. Spring Free Length - 2-17/64". Spring Pressure Spring Length Valve Closed 40 lbs 2" Valve Open 80 lbs 1-21/32" NOTE - When springs removed, test for pressure. Replace if pressure below 34 lbs. at 2". Valve Lifters:-Roller shoe type, fitted in removable guides. VALVE TIMING Tappet Clearance: - Two settings used. One setting for all 3" x5" Engines and early 1941 3" x 4-l/8" Engines (with first type camshaft) and a second setting for later 3" x 4-1/8" engines (with second type camshaft). Second setting on late 1941 3" x4-1/8" engines carried on instruction label attached to valve cover plate. Setting (All 3" x 5" engines and first 3" x 4-1/8" engines up to Car No. 6848) -.006" Intake,.008" Exhaust with engine running and at normal operating temperature. Setting (Later 1941 3" x 4-1/8" Engines after Car No. 6848 and all 1942 3" x 41/8" Engines) -.010" Intake,.012" Exhaust, Hot and Idling. NOTE - This setting carried on label attached to valve cover plate on late 1941 3" x 4-1/8" engines. Valve Timing (3" x4-1/8" Engine): See Camshaft setting. Model 10 (1941) - Before Car #6848 Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valves - Open 50º BLDC. Close 18º44' ATDC. These figures correct with.010" tappet clearance. Model 10 (1941)-After Car #6848 & Model 20 (1942) Intake Valves-Open 28*30' BTDC. Close 68*30'ALDC. Exhaust Valves-Open 52*40' BLDC. Close 32,40' ATDC. These figures correct with.010" tappet clear. Valve Timing Check-With.010" tappet clearance, intake valve opens 10,40' or.04411, piston travel BTDC. (1941 Cars before #6848), 28o3O' or.30631, piston travel BTDC. (1941 cars after #6848 and all 1942 cars) when a point on the flywheel 4 teeth (first 10,40, setting), 101/2 teeth (later 28o3O'setting) before dead center mark "UDC.1-6/" lines up with indicator in inspection hole in rear motor support above starter. Reset tappet clearance for correct running clearance. Valve Timing (3 x 5 Engine): See Camshaft Setting. All Models (1941-42) Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valves-Open 50º ALDC. Close l8º44' ATDC. These figures correct with.010 tappet clearance. Valve Timing Check - With.010" tappet clearance, #1 intake valve opens 10º40' BTDC. with piston.0562" before top dead center or point on flywheel approximately 4 teeth before dead center mark "UDC.1-6/" lines up with indicator in inspection hole in left rear motor support above starter. Reset tappet clearance to correct running clearance. LUBRICATION LUBRICATION:-Duo-flo (pressure and positive splash) lubricating system. - 8 -

LUBRICATION (Cont d) Oil Pump: - Oscillating plunger type, gear driven by camshaft. Mounted on right side of crankcase. Normal Oil Pressure - 4-12 lbs. with hot oil. No gauge used (see Oil Pressure Indicator below). NOTE - On 1942 engines, lower end of oil reservoir suction pipe (from oil pan to crankcase wall) extends to center of oil reservoir to insure constant oil supply to pump. Oil Check Valve: - Located on right side of crankcase at rear. Opens at 4-12 lbs. with hot oil. Operates dash signal to indicate oil flow. Oil Pressure Indicator: - Hudson Teleflash Oil Pressure Indicator. Consists of signal light on instrument panel operated by switch mounted on oil check valve. Crankcase Capacity: - 4½ quarts (refill), 5½ (dry). Servicing Note - When changing oil without removing oil pan, refill with 4½ quarts. If oil pan removed, place 1½ quarts in upper tray before oil pan installed, then 4 quarts through filler with pan in place. COOLING COOLING SYSTEM: - Capacity - 13 quarts. See Hudson Shop Notes for radiator core removal. Water Pump: - Centrifugal, belt-driven, packless type with single outlet (no by-pass). Grease fitting provided for front & rear bearing lubrication. Thermostat: - Fulton. Choke type located in cylinder head water outlet. `Setting - Starts to open 150-155ºF. Fully open 185º. NOTE - Special high temperature thermostats available for use with ethylene glycol type anti-freeze, Starts to open 160-165ºF. Fully open 190ºF. Temperature Gauge: - King-Seeley Electric. K-S Nos. 8310 (Dash Unit-stamped 'T'), 7000 (Eng. Unit). NOTE - Temperature gauge inoperative with ignition 'off. Pointer returns to H' (hot) position. CLUTCH CLUTCH: - Own Make. Single plate, cork insert type operating in oil. See Clutch Section for complete data. Driven Member - Cork Insert type (90 cork inserts on 9 size, 108 cork inserts on 10" size). Corks are.2031, thick. Inside-Diameter-Outside 10 101, 11 (no O.D.) 5¼ 9 10, 10L, 11 (With O.D.) 6-3/8 10" 12,18 6-5/8 10" 20,21 (no O.D.) 5¼ 9 20, 21 (with O.D.) 6-3/8 10" 22,28 6-3/8 10" Pedal Adjustment (1941): Setting used dependent on connector link position on cross shaft lever. Normal setting (with connector link In center hole on cross shaft lever) 11/21, clearance between underside of toeboard and center of clutch pedal clamp bolt. Second setting (with connector link in lower hole for lighter clutch pedal pressure) clearance increased to 2". To adjust, loosen lock nut on connector link above clevis, take out clevis pin and turn clevis in or out for correct clearance. Check Automatic Clutch Control adjustment if used. Pedal Adjustment (1942): Clearance between underside of toeboard and top of pedal shaft should be 11/2" with link engaged in pedal and cross-shaft levers as given in table below. To adjust, loosen locknut on adjusting link above clevis, take out clevis pin (at lower end of link), adjust length of rod for proper clearance by turning clevis in or out on adjusting link. Model Top Bottom 20T, 20P, 20C - Inner Hole Outer Hole 20TL, 20PL, 20CL; 21 Outer Hole Outer Hole 22,24,25,27,28 & Outer Hole Center Hole - All Six & Eight cylinder cars with Vacumotive Drive, Drive-Master, or Overdrive. Removal: - Remove transmission (see Transmission Removal following). Drain clutch oil by turning engine over until plug on flywheel is accessible through timing inspection hole in rear engine support plate above starter, remove plug, turn engine over 1/3 revolution until star on flywheel visible through timing hole (drain hole then at bottom), allow lubricant to be drained. Loosen mounting bolts in clutch cover rim to release spring tension, remove bolts and lift clutch assembly off car. NOTE - See Installation Note following Transmission Removal for Clutch Throwout Bearing Oil Seal. VACUMOTIVE DRIVE Vacumotive Drive: Automatic clutch control. Optional. NOTE - Governor switch changed during production. TRANSMISSION TRANSMSSION: - Own Make. New all helical gear, constant-mesh type with synchro-mesh (Second and High), sliding gears (Low & Reverse) and steering column gear shift. NOTE-External shift rail locks not used but are available in Accessory Kits for installation on cars operated in mountainous regions where Second Gear operation required for long periods. Transmission Control: - Hudson 'Handy-Shift' type. - 9 -

TRANSMISSION (Cont d) Removal: - Transmission can be removed from inside car as follows: Take off accelerator pedal by removing cotter pins in anchor bracket and bell crank link clevis pins. Move steering column rubber hole cover up out of way. Remove floor mat by taking out screws at kick pads on dash and mat trim clips. Remove front seat cushion and transmission floor opening cover (CAUTION-Accelerator pedal operating rod should be secured so as not to drop on starter switch). Disconnect front universal by taking out four nuts and lock plates on U-bolts. Release clutch pedal return spring. Remove two cross shaft bracket bolts, clutch control link clevis pin and clutch pedal assisting spring. Remove Handy Shift control tube to-transmission shift rod cotter pin, washer and grommet; transmission casing lower anchor bracket screws and anchor bracket; transmission case outer lever retainer nut and retainer nut washer; and lever. Remove two flywheel guard- to-clutch housing screws and two rear engine mounting bolts (CAUTION - Do not remove rear engine mounting-to clutch housing bolt). Jack rear of engine up 1/21, off frame. Remove clutch housing to transmission bolts. Disconnect speedometer cable from transmission. Pull transmission back and lift out. Installation Note - Wrap one strand of soft wire around throw-out bearing oil seal to prevent leather curling over when transmission installed (twist wire with ends extending up through clutch housing so that it will come off the seal after transmission installed). DRIVE-MASTER TRANSMISSION Drive-Master: - Conventional 3-speed transmission with automatic gear shifting between second and high gears in conjunction with Vacumotive Drive (automatic clutch control). Optional equipment. OVERDRIVE Overdrive: - Warner Model AS1-R9B with electrical 'kick-down' control (new type - no centrifugal clutch pawls used). Optional equipment. 1941 Governor Switch Change to Correct Late Cut In - New Governor Switch Part No. 162867 with purple dots on terminal screw heads and purple band around switch has reversed oil threads in shaft bushings to keep transmission lubricant out of switch, overcoming improper operation of switch. Used on Late '41 cars. Overdrive Transmission Removal - Same as standard transmission removal (above) except that overdrive control and wiring connections must be disconnected. Overdrive Solenoid - Delco-Remy. Hudson #163305. Throttle Switch - Cole-Hersee. Hudson No. 162594. Adjust position of contact washer on accelerator pedal rod so that it just contacts switch plunger with carburetor throttle in wide open position. Governor Switch-Bendix No. 162867.NOTE-Changed to new type with purple dots on terminals. UNIVERSALS UNIVERSAL JOINTS: - Spicer. Needle bearing type. Car Spicer Model No. Model Front Rear 10, 20 Std 1261-101 1268-10: 11, 12, 21, 22 Std 1271-101 1278-10: 18,28 Std 1281-101 1278-10 All Models (with Overdrive) 1281-101 1278-10 REAR AXLE REAR AXLE: - Own Make. Semi-floating, spiral bevel gear type with Hotchkiss drive. Ratios 4 1/9-1 4 5/9-1 4 7/8-1 10 Standard Opt'l Std Opt l. 10 With Overdrive- Opt l Opt l Std. 11, 12 Standard Std. Opt l 11, 12 With Overdrive Opt l Std 18 Pass. Car Std Std. Opt l 18 Comm'l. Std. Std 18 Pass. Car With O.D Opt l. Std 18 Comm. s. With Overdrive. Opt l. Std. 20 Std Opt l Std Opt l. 20 With Overdrive. Opt l Opt l Std. 21, 22, 28 Pass. Std Std Opt l 21, 22, 28 Pass. O.D Opt l Std. 28 Comm l. Std Std 28 Comm l. With O.D Std Backlash -.0005-.0035". Screw adjustment. Removal: - Disconnect rear universal by taking out four nuts and lock plates on U-bolts, drop rear end of propeller shaft. Remove axle shafts (see instructions below). Remove bolts nuts on carrier flange, pull carrier assembly out of axle housing. Axle Shaft Removal: - Hoist rear of car. Remove rear wheels. Remove axle shaft nut and washer. Remove hub and drum assembly using screw type wheel puller (manufacturer recommends that screw type pull be used, if knock out type puller is used serious damage to differential parts may result). Remove nuts on bearing cap bolts, push bolts out of backing plate, remove bearing cap and shims (without disturbing hand brake link). Take out rear wheel bearing and axle shaft. Do not drag axle shaft on oil seal assembly in housing. Wheel Bearing Adjustment: - Controlled by shims under bearing cap. To adjust, remove bearing c (see directions above under Axle Shaft Removal), add or remove shims equally at both wheels (necessary to keep thrust spacer centered on different pinion shaft - if adjustment made at one wheel only spacer will bind on shaft. Endplay -.002-.004". - 10 -

SHOCK ABSORBERS SHOCK ABSORBERS: - Direct acting, hydraulic types. Car Model Make Front Rear 10, 11, 18 Std. Springs Monroe 160101 160107 10, 11, 18 Hvy. Springs Monroe 161636 160108 10, 11, 12, 18 Monroe 161657 161658 12, 22 Delco 1007-C 1008-S 20, 21, 22, 28 Monroe 164545 164546 20, 21, 22, 28 Monroe 164547 164548 20, 21, 28 Monroe 164786 164787 - All Sedans. - Coupes (3 & 4 Pass.). - Early Sedans (exc. 22), Late 3 Pass. & Club Coupe. -Early 3 Pass. & Club Coupe. -Late Sedans FRONT SUSPENSION Front Suspension: -Independent, linked parallelogram type with coil springs and Autopoise Control. Kingpin Inclination 4º36' crosswise. Caster 0º (Neg. ¼º to Pos. ¼º). Adjustable. Camber - Positive ¼º to Positive ¾º. Adjustable. Toe In - 0-1/16". Center steering arm on frame must be at center of car. To adjust, loosen clamps at ends of each tie rod and adjust tubes equally (to Increase toe-in turn rods in direction of wheel travel, to decrease, turn in opposite direction). Steering Geometry (Toe-out on Turns) - With outer wheel turned 25º. Inner wheel turn should be 30º. STEERING GEAR Steering Gear: Gemmer Model 305. Worm-and-Roller type with "push-pull" adjustments. All models have Center Point steering linkage. BRAKES BRAKES:-Service. Bendix hydraulic, duo-servo, single anchor type without eccentric adjustment. Mechanical follow-up (pedal linked to rear wheel brakes through hand brake cables) provided. Hand lever applies rear wheel service brakes. Commercial Cars Model 10C Note - Early 1941 Model 10C cars (up to Car No. 1054730) equipped with 11" brakes (see 1941 Hudson 8 page for 11 brake specifications). Data below applies to Model 10C starting with Car No. 1054731 & all other Sixes. Drums - New centrifuse type. Diameter 10". Lining - Multibestos molded (primary), Ferodo woven (secondary). Width 1-3/4". Thickness 7/32". Length per wheel 22-1/8. Clearance -.015 at each end of secondary shoe with primary shoe forced out against drum. Hand Brake: - See Service Brakes above. MISC. MECHANICAL CONVERTIBLE TOP CONTROL: Hydro-electric type (hydraulic actuation with motor-driven hydraulic pump). Used on Convertible models. Top Control Motor - Auto-Lite Model MBM-4001. - 11 -

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H U D S O N TUNE-UP SPECIFICATIONS and ADJUSTMENTS HUDSON 8 MODELS 1941-1942

H U D S O N T E C H 2004

1941-1942 Hudson 8 MODEL IDENTIFICATION 1941 1942 Model Serial No. Model Serial No. Commodore Eight 14 14-101 24 24-101 Commodore Custom Coupe 15 15-101 25 25-101 Commodore Custom Sedan 17 17-101 27 27-101 SERIAL & ENGINE NUMBER: - See Model Identification for first Nos. (first 2 figures indicate model thus: 14-101). Stamped on plate on right front door hinge pillar post and on top of engine block between #1 and #2 exhaust manifold flanges. TUNE-UP COMPRESSION: - Ratio 6.5-1 Standard. No Optional ratios. Pressure - 120 lbs. at 125 RPM cranking speed. VACUUM READING: - 18-21" steady idling at 600 RPM. FIRING ORDER: - 1-6-2-5-8-3-7-4. See diagram. SPARK PLUGS: - Champion Special J9, Hudson, 14 MM. Gaps -.032" Optional Plugs - Champion J5 (hotter plug) for continuous low speed service or J10 Commercial (cooler plug) for continuous high speed service. IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.017" Cam Angle 31º (closed). Automatic Advance - 17.5º max. at 1700 RPM (distributor). IGNITION TIMING: See Ignition Timing. Standard Setting - At TDC. with flywheel mark "UDC. 1-8/" at indicator in inspection hole in left rear motor support. CARBURETION: See Carburetor & Carb. Equipment. Idle Setting - Both idle screws 1/2-1-1/2 turn open, Idle speed 580-600 RPM. Float Level - 3/32" (455-S), 1/8" (502-S) from gasket seat on cover to top of float (valve seated). Accelerating Pump - Outer hole (max. stroke) Normal. Inner hole (min. stroke) when required. Fuel Pump Pressure: 4-1/2 lbs. max. (AK), 4 lbs. (AJ). MANIFOLD HEAT CONTROL: - Automatic thermostatic type. No adjustment required. VALVES: See Valve Timing. Tappet Clearance: -.006" Intake,.008" Exhaust (with engine hot and idling). Remove right front fender plate for access to valves. STARTING: See Battery, Starter, Generator, Regulator. IGNITION Ignition Switch: - Mitchellock Model 24-B, No. 8797. Ignition Lock - Briggs & Stratton. B & S No. 50184. Key Series - H601 to H1100. Groove-No. 1. Ignition (Cont'd) COIL: Auto-Lite Model CE-4029. Mounted on dash. Service Coil (less switch & cable) CE-3224JS. Ignition Current - 2.5 amperes idling, 4.5 stopped. CONDENSER: Auto-Lite Part No. IG-2671. Capacity-.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGP-4008A. Single breaker, 8 lobe cam, full automatic advance type. Breaker Gap -.017 Breaker Arm Spring Tension 17-20 Ounces Rotation Clockwise viewed from above. Automatic Advance Distributor Engine Degrees RPM Degrees RPM Start 300 0 600 3 400 6 800 8 850 16 1700 13 1300 26 2600 17.5 1700 35 3400 Fuel Compensator Manual adjustment (for 72 octane rating fuel). See Fuel Compensator setting following. Flywheel Degrees Piston Position All engines 0º at TDC.0000 TDC Flywheel Marks UDC 1-8/ at TDC with 4 graduations (1/4 ) apart ahead of this mark. Timing With #1 piston on compression, turn engine over until piston reaches top dead center when flywheel mark ''UDC.1-8/'' lines up with pointer in left front face of rear motor support. Loosen hold-down screw in advance arm, rotate distributor clockwise to limit of advance arm slot, then slowly rotate distributor counter-clockwise until contacts begin to open, tighten hold-down screw. Check Fuel Compensator setting. Timing (Using Synchroscope) - Recommended method. Mark flywheel with white chalk or paint, connect at #1 spark plug. Idle engine and adjust distributor as directed above. Fuel Compensator Setting - Road test car (engine warm). When running at 8 MPH a slight ping should occur between 10-15 MPH when accelerating with wide open throttle. To adjust, loosen hold-down screw, rotate distributor one graduation on scale counterclockwise (if no ping), clockwise (if ping is to severe). Final setting must not be more than ¾ (3 rd graduation) before UDC.1-8/ mark. - 1 -

1941-1942 Hudson 8 Electrical System - 2 -

1941-1942 Hudson 8 Elect. Sys. (cont d) - 3 -

CARBURETOR CARBURETION (EIGHT): - Carburetor - Carter Type WDO Model 455-S (before Serial & Engine No. 7293), Model 502-S (1941 after No. 7293 and 1942 Models). 1-1/4" dual downdraft types. #279 cast on face of carburetor flange (both carburetors). Slow closing throttle 'dashpot' device used on Model 455-S only. Idle Adjustment - With engine warm and running at slow idle speed (choke valve wide open, fast idle inoperative), set throttle stop-screw for 600 RPM idle speed. Adjust Idle adjusting screws (2 used, 1 for each barrel) in succession until engine fires smoothly. Final setting should be 1/2-1-1/2 turns open for each screw (turn screws in for leaner mixture). If vacuum gauge used, adjust for highest steady reading of gauge. Readjust throttle stop-screw for correct idling speed. Accelerating Pump Setting - Pump lever (under dust cover at top of carburetor) has 2 holes for pump link engagement. Adjust as follows: Outer Hole (Max. stroke) - Normal setting. Inner Hole (Min. stroke) - If less charge required. Float Level - 3/32" (455-S), 1/8" (502-S) from top of float to bowl cover with valve seated. CARB. EQUIPMENT Fast Idle: - Integral type (part of carburetor). Setting (455-S) - With choke valve closed, adjust fast idle screw for.018" throttle opening. Setting (502-S) - With choke valve closed and fast idle screw on high lobe of fast idle cam, turn fast idle screw in until throttle opening is.053". Automatic Choke: - Carter Climatic Control. Setting - Centered (at index mark) for 455-S, 1 Notch Lean for 502-S (supersedes "Centered" setting originally specified for 502--S). Air Cleaner: - AC #1528161 oil-wetted type Standard. #1542385 (Cars with Drive Master) Oil-wetted type. Replacement Filter Element Assembly Type #1. United heavy duty oil-bath type cleaner Optional Fuel Pump: AC Type AK, No. 1523289 diaphragm type fuel pump Standard. Type AJ combination fuel-andvacuum. pump Optional. Replacement Exchange Pump (AK) No. 499. Gasoline Gauge: - King-Seeley Electric. K-S No. 8305 (Dash Unit-stamped 'G'), No. 7550 (Tank Unit). BATTERY BATTERY: - National, Type HT-19. 6 volt, 19 plate, 108 ampere hour capacity (20 hour rate). Starting Capacity - 135 amperes for 20 minutes. Zero Capacity - 300 amperes for 4.0 minutes. Five second voltage - 4.43 volts. Grounded Terminal - Positive (+) to frame. Engine Ground - Strap (rear motor support to frame). Dimensions - Length, 11¾", Width 7¼", Height 7-13/16". Location-On left side under engine hood. STARTER STARTER: - Auto-Lite MAB-4100. Armature MAB- 2113. Drive-Inboard Barrel type Bendix No. A-1684. Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM, 120-125 amperes, 5 v. Performance Data Torque R.P.M. Volts Amperes 0 ft. lbs 3700 5.5 60 0.6 1910 5.5 100 3.4 1100 5.0 200 6.6 695 4.5 300 10.15 420 4.0 400 15.2 " Lock 3.0 575 21.5 Lock 4.0 750 NOTE-Lock torque figures correct with switch. Removal: - On left front face of rear motor support. To remove, take out flange mounting screws. Starting Switch: - A-L Model SS-4001. Magnetic type. Mounted on starter, controlled by switch on instrument panel. Operative only with ignition on (and clutch disengaged on cars with Vacumotive Drive or Hudson Drive Master). Starter push-button Douglas, Hudson No. 147834 (1941). GENERATOR STANDARD GENERATOR: - Auto-Lite GEC-4801A. Armature GDZZ006F. Third brush control with voltage regulation. Ventilated by fan on drive pulley. Maximum Charging Rate - 39-43 amperes (cold), 3350 RPM, 39 MPH ('41), 43 MPH ('42). Charging rate controlled by Voltage Regulator and dependent on battery. See Regulator. Ground generator 'F' terminal when checking generator output., Charging Rate Adjustment - See Regulator data. Third brush setting 1 commutator bar minimum, 1 commutator bar plus 1 mica strip maximum, from nearest (insulated) main brush. Setting adjustable by shifting third brush. Performance Data Cold Hot Amperes Volts R.P.M. Amperes Volts R.P.M 0 6.4 960 0 6.4 1040 4 6.55 1060 4 6.6 1140 8 6.7 1160 8 6.8 1280 12 6.85 1280 12 6.95 1440 16 7.0 1400 16 7.15 1600 20 7.15 1550 20 7.35 1820 24 7.25 1700 24 7.55 2090 28 7.5 1890 28 7.75 2440 32 7.65 2100 32 7.9 3000 36 7.8 2375 34 8.0 3800 41 8.0 3350-4 -

Generator (Cont d) Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes) Field Current - 1.60-1.78 amperes at 6.0 volts. Motoring Current - 4.85-5.4 amperes at 6.0 volts. Removal: - Pivot mounted at left front of engine. To remove, take out pivot and clamp bolts. Belt Adjustment: - -Swing generator out until possible belt deflection midway between generator and fan pulley is ¾ (use straightedge across pulleys). GENERATOR SPECIAL EQUIPMENT Auto-Lite Armature Regulator Generator Number Model GEA-4803-B GDZ-2006F VRP-4008B GEB-4802-A GEB-2006F VRP-4008C GEB-4802B GEB-2006F GEB-4802-B2 GEB-2006F VRP-4008D GEG-4801-A GEG-2006F VRP-4008A - VRP-4008C before generator serial #2V-000001. VRP-4008D after generator serial #2V-000001. Type-Two-brush with current-voltage regulators. Charging Rate Adjustment-None. See Regulator. Maximum Charge Rate - As listed below. Model GEA-4803B Cold Performance Data Hot Amperes Volts R.P.M. Amperes Volts R.P.M. 0 6.4 780 0 6.4 840 4 6.6 870 4 6.6 935 8 6.8 960 8 6.8 1025 12 6.95 1050 12 6.95 1120 16 7.15 1140 16 7.15 1220 20 7.3 1230 20 7.3 1320 24 7.6 1320 24 7.6 1420 28 7.7 1410 28 7.7 1520 32 7.85 1500 32 7.85 1685 35 8.0 1570 35 8.0 1800 Models GEB-4802BKT), GEB-4802B-2 0 6.4 560 0 6.4 620 5 6.6 640 5 6.6 700 10 6.8 720 10 6.8 800 15 7.1 800 15 7.1 910 20 7.3 880 20 7.3 1040 25 7.5 930 25 7.5 1170 30 7.8 1080 30 7.8 1340 35 8.0 1200 35 8.0 1520 After Generator Serial Number 2V-000001. For GEB-4802-B data before this number, refer to the 1940 Hudson Eight article Cold Performance Data Hot Amperes Volts R.P.M. Amperes Volts R.P.M. Model GEG-4801A 0 6.4 780 0 6.4 820 5 6.6 870 5 6.6 900 10 6.8 960 10 6.8 990 15 7.0 1040 15 7.0 1080 20 7.2 1130 20 7.2 1170 25 7.4 1220 25 7.4 1270 30 7.6 1310 30 7.6 1380 35 7.8 1410 35 7.8 1510 40 8.0 1520 40 8.0 1680 Rotation - Counter-clockwise at commutator end. Brush Spring Tension -.53 ozs. max. (GEA Gen.), 64-68 ounces (GEB & GEG Gen.) with new brushes. Field Current - 1.57-1.75 amperes (for GEA Gen.), 1.60-1.78 amperes (for GEB, GEG Gen.) at 6.0 volts. Motoring Current - 4.45-4.9 amperes (GEA Gen.), 4-4.5 amps. (GEB), 4.7-5.2 amps. (GEG) at 6.0 volts. Removal & Belt Adjustment: Same as for Standard Generator REGULATOR STANDARD REGULATOR: - Auto-Lite VRR-4001A. Cutout Relay and vibrating Voltage Regulator in case on dash. Cutout Relay has extra set of contacts for Generator Teleflash Indicator control. NOTE-Regulator enclosed in tight fitting metal cover on dash. NOTE - Regulator case cover is sealed. Serviced on exchange basis if seals not broken. Cutout Relay Cuts In - 6.4-6.6 volts, 825 RPM. 9.4 MPH. Cuts Out - 4.2-4.8 volts (approx. 4-6 amps. discharge). Contact Gap -.015" min. ground contacts closed (ground contacts open when main contacts close). Air Gap -.031-.034" at hinge end of core with contacts open (ground contacts closed). Voltage Regulator Setting - 7.1-7.4 volts at 70º F. To Check (without breaking seals) - Connect ammeter in charging line at regulator 'B' terminal, voltmeter between this terminal and ground. Operate generator at speed of 30 MPH charging battery until voltage is constant, Voltmeter reading should be within limits of 7.1-7.4 volts at 70º F. See Electrical Equipment Section for other temperatures. To Adjust (with cover removed) - Change regulator armature spring tension by bending lower spring hanger slightly. See Electrical Equipment Section. Contact Gap -.012" Min. (armature against stop). Air Gap -.048-.052" with contacts just opening. - 5 -

REGULATOR SPECIAL EQUIPMENT Auto-Lite Regulator Generator Used On VRP-4008-A GEG-4801-A VRP-4008-B GEA-4803-B VRP-4008-C GEB-4802-A T VRP-4008-C GEB-4802-B VRP-4008-D GEB-4802-B VRP-4008-D GEB-4802-B2 - Before Generator Serial Number 2V-000001. - After Generator Serial Number 2V-000001. Type - Cutout Relay and vibrating type Voltage & Current Regulator units in a single case on dash, Same design as Standard VRR Regulator except for the additional Current Regulator. Cutout Relay & Voltage Regulator All specifications same as for Standard VRR type (above). Current Regulator Setting - 39-41 amps marked '40' VRP-4008-A 34-36 amps marked '35' VRP-4008-B&D 31-33 amps marked '32' VRP-4008-C To Check - Connect test meters as for voltage check (above), operate generator at speed for maximum output, turn on lights so that generator charges at peak rate and current regulator operates, check ammeter reading, should agree with setting above. Adjustment, Contact Gap, Air Gap -Same as for VRR Voltage Regulator unit data as given above. LIGHTING Headlamps - Hall "Sealed Beam" type. Headlamp Adjustment - Aim upper beam of each headlamp straight ahead with hot spot centered on horizontal line 3" below lamp center height. Beam Indicator - Red Pilot bulb on speedometer dial. Lighted when Country (upper) beams in use. Direction Indicator - Optional Equipment. Switches - 1941 Lighting-Douglas. Hudson No. 147835. Beam Selector-R-B-M Model 2434. Instrument-R-B-M. Hudson No. 160092. Switches - 1942 Lighting-Douglas. Hudson No. 200417. Beam Selector - R-B-M. Hudson No. 164439. Instrument - R-B-M. Hudson No. 160092. Bulb Specifications Position Candlepower Mazda No. Headlamps Sealed Beam Bonnet Side Panel (Park) 1.5 55 Fender Lamp (See Note) 3 63 Ign. Lock ('42), Clock 1.5 55 Speedometer ('41) 1.5 55 Spdmtr. ('42), Ign. Lock ('41) 1.5 51 Gen. & Oil Signal ('41) 1.5 55 Gen. &- Oil Signal ('42) 1 51 Beam & Direction Ind. 1 51 Stop & Tail 21-3 1154 Rear License 3 63 Dome & Courtesy 15 88 NOTE - Front Direction Indicator bulb is separate 21 cp. Mazda No. 1129 (1941), combined with Fender Lamp in 21-3 cp. Mazda No. 1158 bulb (1942). MISC. ELECTRICAL SIGNAL LIGHTS: - Generator Charge and Oil Pressure Indicators used. Hudson Teleflash Electric type. FUSES: - Lighting - 30 ampere. Lower fuse on fuse block on lower edge of instrument panel to right of steering column. Accessory - 30 amp. Top fuse on block. NOTE - Silver-plated fuses used. 30 amp. fuse supersedes 20 ampere fuse used on early cars. Twin Horns (1941) - 30 ampere. On engine dash. Direction Indicator - 10 amp. near speedometer. Electric Clock - 2 amp. in case behind clock. NOTE - Feed wire for electric clock on early cars connected to battery 'B' terminal on fuse block. Car manufacturer recommends that feed be connected to accessory 'X' terminal (see diagram). HORNS: - Sparton - Twin air electric type operated by relay. 30 amp. fuse in case on dash. Air Gap -.026-.030" high pitch (short horn),.032.035" low pitch (long horn). Horn Relay: - R-B-M Model 6004. On engine dash. Contacts Close - 3 volts min., 4 volts, max. Open - 2 volts min. (relay upright, terminals down). ENGINE ENGINE SPECIFICATIONS: - 8 cylinder, 'L' head type. Bore - 3". Stroke-4½". Displacement - 254 cubic inches. Rated HP - 28.8. Developed Horsepower - 128 at 4200 RPM. Compression Ratio - 6.50-1 cast-iron head. Compression Pressure - 120 lbs. at 125 RPM. Vacuum Reading - Steady 18-21" idling at 600 RPM. - 6 -

Engine (Cont d) PISTONS: Lo-Ex aluminum alloy (1941), Cast Alloy Use finished replacement pistons. Weight - 10.5 ozs. (stripped). Length - 3-3/16". Removal - Piston and rod assemblies may be removed from above or below. Clearance - Top.016". Skirt.0005-.001". Fitting New Pistons: - Use.0015" feeler 1/2" wide inserted between piston and cylinder wall on side opposite slot 90º from pin. Pull to withdraw feeler 3-4 lbs. Installing Pistons: Slot away from camshaft. PISTON RINGS: - 2 compression, 2 oil rings ( above pin, 1 below pin). Rings positioned by pin in groove. Ring Width End Gap Side Clearance Compression 3/32.009-.011.001" Oil Cont. (#1) 3/16.009-.011.001 Oil Cont. (#2) 5/32.009-.011.001 PISTON PIN: - Diameter - ¾". Length - 2-7/16". Floating type. Retained by locking rings. Pin Fit in Piston -.0003" clearance (hand push fit) with piston heated to 200º F. Pin Fit in Rod Bushing -.0003" clearance. Replacement Pins: - Standard,.002",.005".010" oversize. CONNECTING ROD: - Weight 30 ozs. Length 8-3/16". Crankpin Journal Diameter - 1-15/16". Lower Bearing - Lead alloy-lined (1941), babbitt lined (1942), Spun type. Exchange Rods furnished Standard Size and.010" Undersize. Clearance -.001". Sideplay -.006-.010". Bearing Adjustment: - None (no shims). Replace rods. Installing Rods: - Offset. Install rods with widest half of bearing toward rear (#1, 3, 5, 7), toward front (#2, 4, 6, 8). Oil scoop on all rods toward camshaft. CRANKSHAFT: - 5 bearing, integral counterweights. Journal Diameters - #I, 2-9/32"; #2, 2-5/16tt; #3, 2-11/32", #4, 2-3/8"; #5, 2-13/32". Bearings - Bronze-backed, babbitt-lined type. NOTE - No shim pack is used. Palnuts used in place of cotter pins to lock bearing cap nuts. Clearance -.001". Bearing Adjustment: - None (no shims). Do not file caps. End Thrust: - Taken by center bearing. Replace bearing If endplay excessive. Endplay -.006-.012". CAMSHAFT: - Five bearing gear driven type with new type bearings and timing gears. 1942 Note - Camshaft Bearing Clearance and Timing Gear Backlash reduced from that used on previous models for quieter operation of valve mechanism. No valve spring dampeners used. Journal Diameters - #l, 2.029"; #2, 1.998"; #3, 1.966"; #4,1.935"; #5,1.498". Bearings - New type steel-backed, 'Bermax (babbitt) lined bushings (formerly solid type babbitt), Clearance-.002-.0025" (1941),.001-.0025" (1942). End Thrust: - Thrust washer between camshaft flange and crankcase. Spring loaded button in camshaft hub bears against thrust plate on gear cover. NOTE-Service thrust washer available which can be split and installed without removing camshaft. Timing Gears: Crankshaft gear Cast Iron, camshaft gear Laminated Fibre. Tooth shape changed to 20º pressure angle (was 14½º) to provide quieter operation and longer gear life. Gears can be identified by figure 20 stamped on front face (crankshaft gear carries additional FRONT mark to insure correct installation). Gears may be installed in set* only (not singly) on earlier car models (new type gears similar to previous type except for pressure angle). NOTE - Camshaft gear available in.008" Oversize (can be distinguished from Standard size by spot of yellow paint on front face). Camshaft Setting: - Mesh marked crankshaft gear tooth between two marked teeth on camshaft gear. VALVES: Head Diameter Stem Diameter Length Intake 1½" 11/32" 5-3/32" Exhaust 1-3/8" 11/32" 5-3/32" Seat Angle Lift Stem Clearance Intake 45º 11/32".0025" Exhaust 45º 11/32".004" Valve Guides: Removable type. New longer exhaust guide used in 1942 (counterbore at top increased and lengthened approx. 3/8", lower end of guide has been lengthened approx. 3/8" to compensate for increased length of counterbore at top.) This new guide designed to reduce tendency of exhaust valves to stick due to fuel or oil gum formations at upper end of valve stem. Servicing - Use appropriate tool to drive guides out. Install guides with appropriate tool with top of guide 15/16 below top of cylinder block. With guides installed, ream guides with reamer to.3437 (11/32") which will provide proper valve stem-to-guide clearance. Valve Springs: - Cadmium plated springs used with dampener installed on bottom with open side toward cylinder (Dampener used on 1941 cars only). Use special tool to install valve spring and seat assembly. NOTE: - Car manufacturer recommends that dampeners be omitted whenever valves are serviced. Spring Pressure Spring Length Valve Closed 40 lbs 21" Valve Open 80 lbs 1-21/32" NOTE - Replace if pressure below 34 lbs. at 2". Valve Lifters: - Roller shoe type, fitted in removable guides. - 7 -

Engine (Cont d) VALVE TIMING CLUTCH Tappet Clearance: -.006" Intake,.008" Exhaust, hot & idling. Valve Timing: - See Camshaft Setting above. Intake Valves - Open 10º40' BTDC. Close 60º ALDC. Exhaust Valve - Open 50º BLDC. Close 18º44' ATDC. Above figures correct with.010" tappet clearance. Valve Timing Check - With.010" tappet clearance #1 intake valve should open with piston 10º40' or.0494" BTDC when a point on the flywheel approximately 3.97 teeth before 'UDC.1-8/' mark lines up with indicator in inspection hole above starter. Reset tappet clearance at.006" hot and idling. LUBRICATION LUBRICATION: - Duo-flo (pressure & positive splash). NOTE - On 1942 engines, lower end of oil reservoir suction pipe (from oil pan to crankcase wall) extends to center of oil reservoir to insure constant oil supply to pump. Oil Pump: - Oscillating plunger type, gear driven by camshaft. Mounted on right side of crankcase. Normal Oil Pressure - 4-12 lbs. with hot oil. No gauge used (see Oil Pressure Indicator below). Oil Check Valve: - Located on right side of crankcase at rear. Opens at 4-12 lbs. with hot oil. Operates dash signal to indicate oil flow. Oil Pressure Indicator: - Hudson Teleflash Oil Pressure Indicator. Crankcase Capacity: - 7 qts. (refill), 9 qts. (dry). Servicing Note - Whenever pan removed, install 2 qts. in upper tray before pan installed, then add 7 qts. through oil filler after pan in place on engine. COOLING COOLING SYSTEM: - Capacity - 18 quarts. Water Pump: - Centrifugal, belt-driven, packless type with single outlet (no by-pass) on Models 14 & 24, double outlet (with by-pass) on Models 15,17, 25, 27. Thermostat: Fulton. Choke type (Models 14, 24), Bypass type (Models 15,17,25,27). In cylinder head water outlet. Setting - Starts to open 150-155º F. Fully open 185º F. NOTE - Special high temperature thermostats available for use with ethylene glycol type antifreeze. Starts to open 160-165º F (14,24), 165-170º F (15, 17, 25, 27); Fully open 190º F (14, 24), 195º F (15,17,25,27). Temperature Gauge: - King-Seeley Electric. K-S Nos. 8310 (Dash Unit - stamped "T"), 7000 (Engine Unit). NOTE - Gauge reads HOT with ignition 'off CLUTCH: - Own Make. Single plate, cork insert type operating in oil. Driven Member - Cork insert type. Inside Diameter 6-3/8", Outside Diameter 10". Facing 108 corks.203" thick, Pedal Adjustment (1941): Two settings used dependent on connector link position on cross-shaft lever. Normal setting (with connector link in center hole on cross-shaft lever) 1-1/2" clearance between underside of toeboard and center of clutch pedal clamp bolt. Second setting (with connector link in lower hole for lighter clutch pedal pressure) clearance increased to 2". To adjust, loosen locknut on connector link above clevis, remove clevis pin, turn clevis in or out for correct clearance. Check Automatic Clutch Control adjustment (if used). Pedal Adjustment (1942): Clearance between underside of toeboard and top face of pedal shaft should be 1-1/2" with adjusting link engaged in pedal and cross-shaft levers as listed in table below. To adjust, loosen locknut on adjusting link above clevis, remove clevis pin at lower end of link, turn clevis in or out for correct clearance. Model Top Bottom 24,25,27 Outer Hole Center Hole Removal: - Remove transmission (see Transmission Removal following). Drain clutch oil by turning engine over until plug on flywheel is accessible through timing inspection hole in rear engine support plate above starter, remove plug, turn engine over 1/3 revolution until star on flywheel visible through timing hole (drain hole then at bottom), allow lubricant to be drained. Loosen mounting bolts in clutch cover rim to release spring tension, remove bolts and lift clutch assembly off car. NOTE - See Installation Note following Transmission Removal for Clutch Throwout Bearing Oil Seal VACUMOTIVE DRIVE Vacumotive Drive: - Automatic clutch control. Optional. NOTE - Governor switch changed during production. See Clutch Section for complete data. TRANSMISSION TRANSMISSION: - Own Make. New all helical gear, constant-mesh type with synchro-mesh (Second & High), sliding gears (Low & Reverse) and steering column gear shift. NOTE-External shift rail locks are not used. Transmission ControI: - Hudson 'Handy-Shift' type. Removal: - Transmission can be removed from inside car as follows: Take off accelerator pedal by removing - 8 -

Engine Transmission (Cont d) cotter pins in anchor bracket and bell crank link clevis pins. Move steering column rubber hole cover up out of way. Remove floor mat by taking out screws at kick pads on dash and mat trim clips. Remove front seat cushion and transmission floor opening cover (CAUTION- Accelerator pedal operating rod should be secured so as not to drop on starter switch). Disconnect front universal by taking out four nuts and lock plates on U-bolts. Release clutch pedal return spring. Remove two cross shaft bracket bolts, clutch control link clevis pin and clutch pedal assisting spring. Remove Handy Shift control tube-to-transmission shift rod cotter pin, washer and grommet; transmission casing lower anchor bracket screws and bracket, shift shaft outer lever nut, washer and lever. Remove two flywheel guard-to-clutch housing screws and two rear engine mounting bolts (CAUTION- Do not remove rear engine mounting-to-clutch housing bolt). Jack rear of engine up 1/21, off frame. Remove clutch housing to transmission bolts. Disconnect speedometer cable from transmission. Pull transmission back and lift out. Installation Note - Wrap one strand of soft wire around throw-out bearing oil seal to prevent leather curling over when transmission Installed (twist wire with end extending up through clutch housing so that it will come off the seal after transmission installed). DRIVE-MASTER TRANSMISSION Drive-Master: Conventional 3-speed transmission with automatic gear shifting between second and high gears in conjunction with Vacumotive Drive (automatic clutch control). Optional equipment. OVERDRIVE Overdrive: - Warner Model ASl-R9B with electrical 'kick-down' control (new type - no centrifugal clutch pawls used). Optional equipment. 1941 Governor Switch Change to Correct Late Cut In- New Governor Switch Part No. 162867 with purple dots on terminal screw heads and purple band around switch has reversed oil threads in shaft bushings to keep transmission lubricant out of switch, overcoming improper operation of switch. Used on Late 141 cars. Overdrive Transmission Removal - Same as standard transmission removal (above) except that overdrive control and wiring connections must be disconnected. Hoist and dolly should be used to lift transmission and lower onto dolly. Transmission and overdrive assembly can then be rolled out from beneath car. Overdrive Solenoid - Delco-Remy. Hudson #163305. Throttle Switch - Cole-Hersee. Hudson No. 162594. Adjust position of contact washer on accelerator pedal rod so that it just contacts switch plunger with carburetor throttle in wide open position. Governor Switch - Bendix No. 162367. NOTE - Switch changed to Part No. 162867 during production (identified by purple dots on terminal screw heads & purple band around switch body). UNIVERSALS Spicer. Needle bearing type. Spicer Model Numbers: Front - 1271-101 (14,15,24,25), 1281-101 (17,27). Rear - 1278-101 (All Models). REAR AXLE REAR AXLE: - Own Make. Semi-floating, spiral bevel gear type with Hotchkiss drive. Ratio - 4 1/9-1 (Standard, Optional on Overdrive), 4 5/9-1 (Standard with Overdrive, Optional on regular transmission). Backlash -.0005-.0035". Screw adjustment. Removal: - Disconnect rear universal by taking out four nuts and lock plates on U-bolts, drop rear end of propeller shaft. Remove axle shafts (see Instructions below). Remove bolt nuts on carrier flange, pull carrier assembly out of axle housing. Axle Shaft Removal: - Hoist rear of car. Remove rear wheels. Remove axle shaft nut and washer. Remove hub and drum assembly using screw type wheel puller - CAUTION - Car manufacturer recommends that screw type puller be used, if knock-out type puller Is used serious damage to differential parts may result). Remove 4 puts on bearing cap bolts, push bolts out of backing, plate, remove bearing cap and shims (without disturbing hand brake link). Take out rear wheel bearing and axle shaft. Do not drag axle shaft on oil seal assembly in housing. Wheel Bearing Adjustment: - Controlled by shims under bearing cap. To adjust, remove bearing cap (see directions above under Axle Shaft Removal), add or remove shims equally at both wheels (necessary to keep thrust spacer centered on differential pinion shaft). Endplay-.002-.004". SHOCK ABSORBERS SHOCK ABSORBERS: - Delco - Sedans & Club Coupes: 1007-C (front), 1008-S (rear). Monroe - 3 & 4 passenger Coupes: (Front) 161657 (1941), 164547 (1942 Early Cars), 164545 (1942 Later Cars). (Rear) 161658 (1941), 164548 (1942 Early Cars), 164546 (1942 Later Cars). All shock absorbers are Direct Acting, Hydraulic type. - 9 -

FRONT SUSPENSION Front Suspension: - Independent, linked parallelogram type with coil springs and Autopoise Control. Kingpin Inclination - 4º36' crosswise. Caster - 0º (Neg. 1/4º to Pos. 3/4º). Adjustable. Camber - Positive 1/4º to Positive 3/4º. Adjustable Toe In - 0-1/16". Loosen clamps at ends of each tie rod (adjust rods equally with steering arm centered). Steering Geometry - Inner wheel 30º. Outer 25º. STEERING GEAR Steering Gear: Gemmer Model 335. Worm-and-Roller type with "push-pull" adjustments and Center Point steering linkage. BRAKES BRAKES: - Service. Bendix hydraulic, duo-servo, single anchor type without eccentric adjustment. Mechanical follow-up (pedal linked to hand brake cables) provided. Hand lever applies rear service brakes. Drums - Centrifuse. Diameter 11". Lining - Multibestos molded (primary), Ferodo woven (secondary). Width 1-3/4". Thickness 7/32". Length per wheel 23-15/16". Clearance - 015" at both ends of secondary (rear) shoe with primary shoe forced out against drum. Hand Brake: - See Service Brakes above. MISC. MECHANICAL CONVERTIBLE TOP CONTROL: Hydro-electric type (hydraulic actuation with motor-driven hydraulic pump). Used on Convertible models. Control Motor - Auto-Lite Model MBM-4001. - 10 -

1946-1947 Hudson 6 & 8 Tune-up Specificatons

H U D S O N T E C H 2005

1946 Hudson Six Mechanical Specifications and Adjustments HOOD LOCK: Hood is Reverse Alligator type hinged at radiator. To raise hood, press in on lock handle to left of steering column, raise rear end of hood. MODEL IDENTIFICATION Model Wheelbase Serial No. Super Six - 51 121 31-101 Commodore Six - 52 121 32-101 Business Cars - 58 128 38-101 SERIAL & ENGINE NUMBER: See model notation above for First No. and prefix (first two figures indicate model thus: 31-101). Stamped on plate on right front door hinge pillar post and on top of engine block between #1 and #2 exhaust flanges. TUNE-UP COMPRESSION: Pressure-120 lbs. at cranking speed of 125 RPM. VACUUM READING: Steady 18-21" (idling @ 7½-8 MPH.) FIRING ORDER: 1-5-3-6-2-4. SPARK PLUGS: Champion Special J-9 Hudson. 14 mm. Gaps -.032" IGNITION: See Coil, Condenser, and Distributor. Breaker Gap.020". Cam Angle 35º (closed). Breaker Arm Spring Tension - 17-20 ounces. Rotation - Counter-clockwise viewed from above. Automatic Advance - Starts at 400 RPM. Maximum 11.75º at 1570 RPM. (Distr. degrees & RPM). Vacuum Advance - Starts with 63/4" vacuum. Maximum 71/2o (distr.) with 10" of vacuum. IGNITION TIMING: Std. Setting - 1/2" BTDC Timing Mark - Flywheel marked "UDC.1-6/" with four graduations 1/4" apart ahead of this mark. Set timing with the 3rd white line aligned with pointer in inspection hole in motor support above starter, then adjust Fuel Compensator as follows: Fuel Compensator Setting - Advance spark (loosen vacuum unit link screw on distributor quadrant) until slight ping noted accelerating with wide open throttle between 10-15 MPH. Final setting must not be more than 1" before "UDC.1-6/1" CARBURETION: See Carburetion. Idle Setting - Set both idle adjusting screws for smooth running and highest steady vacuum gauge reading (each screw 1/2-1½ turns open -turn screws in for leaner mixture). Idle speed 7½-8 MPH. Float Level - 1/8" from top of float to gasket seat on cover with valve seated (invert to check). Accelerating Pump - Outer hole (max.) Normal. Fuel Pump Pressure: 3-4 lbs. (AC. mechanical type), 2½-3 lbs. (Autopulse electrical type). MANIFOLD HEAT CONTROL: Automatic thermostatic type (no adj.). Valve must operate freely. VALVES: See Valve Timing, Tappet Clearance -.010" Intake,.012" Exhaust, engine idling at normal operating temperatures. NOTE - This clearance required by new No. 162962 camshaft (also supplied for service on all 6 cyl. cars). Camshaft may be identified by letter "X" stamped on front face of cam gear attaching flange and by shoulder 1/4" wide on shaft between 2nd & 3rd cams from front (visible from below, pan off). STARTING: See Battery, Starter, Generator and Regulator. IGNITION COIL: Auto-Lite Model IG-4098. Service Coil IG-4098S. Mounted on dash. NOTE - Coil connections are reversed (breaker connection at base of coil). Ignition Current - 2-1/2 amperes idling, 5 stopped. CONDENSER: Auto-Lite Part No. IGW-3075C. Capacity -.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGW-4203-A with separate VC-306OES Vacuum unit. Full automatic advance type with auxiliary vacuum spark control and Fuel Compensator adjustment. See Tune-Up for distributor specifications. IGNITION TIMING: See Tune-Up for settings. CARBURETION CARBURETOR: Carter WDO Model 501-S. 11, Dual, double barrel downdraft type with Climatic Contr. See Tune-Up for carburetor adjustment directions. Std. Metering Rod - No. 75-467. Checking Gauge No. T109-113 (2.280"). Metering Jet No. 120-65S (.082"). FAST IDLE: Setting - With choke valve closed and fast idle screw on high lobe of fast idle cam, turn screw in until throttle opening is.045". AUTOMATIC CHOKE: Setting - 1 Point Lean. AIR CLEANER: AC Oil-wetted type Standard; United oil-bath type Optional. Servicing - Clean and re-oil filter elements (oil wetted type), clean and renew oil in sump (oil-bath type) at 2000 mile intervals or oftener if required. NOTE - Oil-bath cleaner capacity 1 Pint engine oil. Use same grade oil as used in engine crankcase. FUEL PUMP: AC Type AK (Exch. No. 499) Diaphragm type or Autopulse Electrical type. Pressure - 3-4 lbs. (AC), 2½-3 lbs. (Autopulse). ELECTRICAL BATTERY: National. 6 volt, 17 plate, 96 A. H. Grounded Terminal-Positive (+) terminal. Location - In engine compartment on left side. STARTER: Auto-Lite MZ-4092. Armature MZ-2138. Drive-Inboard Barrel type Bendix No. A-1684. Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 42-53 ozs. (new brushes). Cranking Engine - 150 RPM. 125 amperes, 5. 4 volts. Performance Data Torque RPM Volts Amperes 0 ft. lbs. 4300 5.5 70 7.65 " 2200 4.0 400 11.8 " Lock 4.0 560

1946-47 Mechanical Specs (Cont d) GENERATOR: Auto-Lite Model GEC-4801A.Arirnature GDZ- 2006F. Third brush control type with voltage regulation. Ventilated by fan on drive pulley. Maximum Charging Rate - 44 amperes (cold), 8.0 volts, 3400 RPM or approx. 35 MPH. Charging Rate Adjustment - See Regulator. Third brush should be set I commutator bar min., 1 bar plus 1 mica strip max. from nearest main brush. Cold Performance Data Hot Amperes Volts RPM Amperes Volts RPM 0 6.4 960 0 6.4 1040 8 6.7 1160 8 6.7 1280 16 7.0 1400 16 7.0 1600 24 7.25 1700 24 7.25 2090 32 7.65 2100 32 7.65 3000 41 8.0 3350 34 8.0 3800 Rotation - Counter-clockwise at commutator end. Brush Spring Tension - 53 ozs. max. (new brushes). Field Current - 1.60-1.78 amperes at 6.0 volts. Belt Adjustment - 3/4" deflection midway between generator and fan pulleys. REGULATOR: Auto-Lfte VRR-4001A. Voltage Type. Cutout Relay Closes - 6.4-6.6 volts. Opens 42-4.8 volts with approx. 4-6 ampere discharge current. Voltage Regulator Setting - 7.1-7.4 volts at 70º LIGHTING: Headlamps - Hall Sealed Beam type. Adjustment - Aim upper beam straight ahead (hot spot center 3" below lamp center height at 25'). Lamp Bulbs-See Specification Table on Page 31. FUSES: Lighting - 30 ampere. Two silver-plated type on fuse block on back of instrument panel. Clock - 2 ampere. In case on back of clock. Direction Indicator - 10 ampere. In flasher lead. Heater - 14 ampere. On left side of heater. Radio - 20 ampere. ENGINE ENGINE SPECIFICATIONS: Six Cylinder, "L" head. Bore - 3", Stroke - 5" Displacement - 212 cu.ins. Rated H.P - 21.6 Developed Horsepower - 102 at 4000 RPM. Compression Ratio - 6.5-1 Std. Cast Iron Head. PISTONS: Aluminum alloy, cam ground type. Weight - 10.5 ozs. Length - 3-3/16". Removal - Pistons and rods removed from above. Clearance -.0005-.001". Use.0015" feeler stock 1/2" wide. Pull to withdraw feeler should be 3-4 lbs. Installing Pistons - Slot away from camshaft. PISTON RINGS: Width End Gap Side Clearance Compr. (# 1, 2) 3/32.009-.011".001" Oil (#3) 3/16.009-.011".001" Oil (#4) 5/32".009-.011".001" NOTE - Rings are pinned type. Clearance at pin must be kept uniform with end gap. PISTON PIN: Floating type (locking ring each end). Clearance -.0003" in rod bushing and piston (piston heated to 200ºF). CONNECTING ROD BEARINGS: Spun alloy lined type. No shims. Install exchange rods. Clearance - 001". Sideplay -.007-.013". Installing Rods - Widest half or offset of lower bearing toward rear of engine (#1,2,4 - Six Cylinder; # 1, 3, 5, 7-8 Cylinder), toward front (#3, 5, six Cylinder; #2,4,6,8-8 Cylinder). Oil scoop on bearing cap toward camshaft on all rods. CRANKSHAFT BEARINGS: Removable, bronze-backed, babbitt-lined type. No shims, Clearance -.001" Endplay.006-.012" (center). CAMSHAFT SETTING: Mesh marked tooth on crankshaft gear with marked teeth of camshaft gear. NOTE - Aluminum camshaft gear used on later cars (must be used as set with special crankshaft gear). VALVES: Head. Seat Stem Diameter Angle Clearance Intake (Six) 1 3 / 8 45º.0025" Intake (Eight) 1½ 45º.0025" Exhaust (All) 1 3 / 8 45º.004" Valve Spring Pressure - 40 lbs. at 2" (closed), 80 lbs. at 1 21 / 32 " (valve open). Free length 2 17 / 64 ". VALVE TIMING Valve Timing Check-With.010" tappet clearance, #1 intake valve opens 10º40' BTDC with point on flywheel 4 teeth ahead of top dead center mark "UDC.1-6/" at indicator in inspection hole above starter. NOTE.010" is regular tappet clearance. LUBRICATION & COOLING LUBRICATION: Crankcase Capacity 5½ quarts (dry), 4½ (refill). NOTE - If pan removed, place 1-1/2 qts. In upper tray before pan replaced, additional 4 qts. in oil filler after pan in place. Normal Oil Pressure - 4-12 lbs. (no gauge). Oil Filter - Hudson type Optional. Replace cartridge at 5000-6000 mile intervals. COOLING: Capacity - 13 qts. Thermostat - In cylinder head outlet. Starts to open at 150-155ºF. Fully open at 185ºF. MECHANICAL CLUTCH: Own. Single plate type with cork-insert type driven member. Operates in oil. Pedal Adjustment - Clearance between toeboard and rear face of pedal must be 1-1/2". Adjust by turming clevis on pedal throw-out lever. to

1946-47 Mechanical Specs (Cont d) Facings - Driven Member consists of steel disc with cork inserts. Two types used as follows: Model I.D. O.D. No. Corks 51 & 52 * 5-1/4" 9" 90 51 & 52 ** 53, 54, 58 6-3/8" 10" 108 * - No Overdrive, Vacumotive Drive, DriveMaster. ** - With equipment listed above. Servicing - Drain and refill clutch housing with 1/3 pint Hudsonite at 5000 mile intervals. VACUMOTIVE DRIVE: Optl. Equipment automatic clutch control (with vacuum-power cylinder). DRIVE-MASTER: Optl. Equipment. Special automatic shift transmission used in conjunction with Vacumotive Drive (automatic clutch control). OVERDRIVE: Warner Type R9B (used with Hudson Transmission). "Kick-down" type with electrical engagement and disengagement. FRONT SUSPENSION: Independent, parallelogram type with coil springs. BRAKES: Bendix Hydraulic, Single Anchor "No Eccentric" type with Hudson Mechanical Follow-up. Hand lever applies rear wheel service brakes. Clearance -.0075" (.015" at each end of secondary shoe with primary shoe out against drum). NOTE - can be adjusted by backing off adjusting screw in each wheel 14 notches from Heavy Drag position. Mechanical Follow-up Adjustment - 1-1/4" clearance between pushrod tube face and pedal rod. Drum Diameter - 10"1 (51, 52), 11" (53, 54, 58). Lining - Molded (primary shoes), Woven (secondaryshoes). Width - 1-3/4", Thickness 7/-32", Length per wheel 19-2-7/32" (51, 52), 21 19/32" (53,54,58). HUDSON 8 MODEL IDENTIFICATION Model Wheelbase Serial No. Super Eight - 53 121" 33-101 Commodore Eight - 54 121" 34-101 SERIAL & ENGINE NUMBER: See model notation above for first No. and prefix (first two figures indicate model thus: 33-101). Stamped on plate on right front door hinge pillar post and on top of engine block between #1 and #2 exhaust flanges. COMPRESSION: Pressure - 120 lbs. at cranking speed of 125 RPM. VACUUM READING: Steady 18-21" idling 7-1/2-8 MPH. FIRING ORDER: 1-6-2-5-8-3-7-4. SPARK PLUGS: Champion Special J-9 Hudson. 14 mm.. Gaps -.032" IGNITION: See Coil, Condenser, and Distributor. Breaker Gap -.017" Cam Angle 31º (closed). Breaker Arm Spring Tension - 17-20 ozs. Rotation - Clockwise viewed from above. Automatic Advance - Starts at 300 RPM., 3º at 400 RPM., Maximum 17.5º at 1700 RPM (Distr. º & RPM) IGNITION TIMING: Std. Setting - At TDC. Timing Mark - Flywheel marked "UDC.1-8" with four graduations 1/4" apart ahead of this mark. Set timing with first white line aligned with pointer in inspection hole in motor support above starter, then adjust Fuel Compensator as follows: Fuel Compensator Setting - Advance spark (loosen hold-down screw and rotate distributor) until slight ping noted when accelerating with wide open throttle between 10-15 MPH. Final setting must not be more than 3/4" before "UDC.1-8/". CARBURETION: See Carburetion. Idle Setting-Set both idle adjusting screws for smooth running and highest steady vacuum gauge reading (each screw 1/2-11/2 turns open-turn screws in for leaner mixture). Idle speed 7-1/2-8 MPH. Float Level - 1/8" from top of float to gasket seat on cover with valve seated (invert to check). Accelerating Pump - Outer hole (max.) Normal. Fuel Pump Pressure: 3-4 lbs. (AC. mechanical type), 2-1/2-3 lbs. (Autopulse electrical type). MANIFOLD HEAT CONTROL: Automatic thermostatic type (no adj.). Valve must operate freely. VALVES: See Valve Timing. Tappet Clearance -.006" Intake,.008" Exhaust, engine idling at normal operating temperatures. STARTING: See Battery, Starter, Generator and Regulator. 1946-47 Mechanical Specs (Cont d) IGNITION COIL: Auto-Lite Model CE-4029. Service Coil CE-3224JS. Mounted on the dash. CONDENSER: Auto-Lite Part No. IG-2671. Capacity -.20-.25 microfarad. DISTRIBUTOR: Auto-Lite Model IGP-4008-A or IGP-4008-B. Full automatic advance type (no vacuum control) with Fuel Compensator adjustment. See Tune-Up /or distributor specifications. IGNITION TIMING: See Tune-Up for settings. CARBURE- TION CARBURETOR: Carter WDO Model 502-S. 11/41, Dual, double barrel downdraft type with Climatic Contr. Std. Metering Rod - No. 75-529. Checking Gauge No. '109-113 (2.28011). Metering Jet No. 120-121S (.08611). SIT IDLE: Setting-With choke valve closed and fast idle screw on high lobe of fast idle cam, turn screw in until throttle opening is.053". AUTOMATIC CHOKE: Setting - 1 Point Lean. AIR CLEANER: AC Oil-wetted type Std., United Oilbath type Optl. Servicing - Clean and re-oil filter elements (oilwetted type), clean and renew oil in sump (oil-bath type) at 2000 mile intervals or oftener if required. FUEL PUMP: AC Type AK (Exch. No. 499) Diaphragm type or Autopulse Electrical type. Pressure - 3-4 lbs. (AC), 21/2-3 lbs. (Autopulse).

1946-47 Mechanical Specs (Cont d) ELECTRICAL All Electrical Equipment and specilications same as used on Hudson Six (see preceding article) except as noted BATTERY: National. 6 volt, 19 plate, 108 A. H. Grounded Terminal-Positive (+) terminal. Location - In engine compartment on left side STARTER: Auto-LiteMAB-4100. ArmatureMAB-2113. Drive - Inboard Barrel type Bendix No. A-1684. Rotation - Counter-clockwise at commutator end. Brush Spring Tension-42-53 ozs. (new brushes). Cranking Engine-150 RPM, 125 amperes, 5 volts. Performance Data Torque R.P.M. Volts Amperes 0 ft. lbs 3700 5.5 60 10.15 " 420 4.0 400 21.5 " Lock 4.0 750 For Generator, Regulator, Lighting, & Fuse data, see Hudson Six article (preceding). ENGINE ENGINE SPECIFICATIONS: 8 Cylinder, "L" head type. Bore - 3". Stroke - 4-1/2". Displacement - 254 cu. ins. Rated H.P. 28.8. Developed Horsepower - 128 at 4200 RPM. Compression Ratio - 6.5-1 Std. Cast Iron Head. All Engine data (Pistons, Rings, Pins, Bearings, etc.) same as for Hudson Six except as noted. VALVE TIMING Valve Timing Check-With.0101, tappet clearance, #1 intake valve opens 10*40' BTDC. with point on flywheel approx. 3.97 teeth ahead of top dead center mark "LTDC.1-8/" at indicator in inspection hole above starter. Tappet Clearance: -.006" Int.,.008" Exh. Hot. LUBRICATION & COOLING LUBRICATION: Crankcase Capacity - 9 qts. (dry), 7 qts. (refill). NOTF - If pan removed, place 2 qts. in upper tray before pan replaced, additional 7 qts. in oil filler after pan in place. Normal Oil Pressure - 4-12 lbs. (no gauge). Oil Filter - Hudson type Optl. Replace cartridge at 5000-6000 mile intervals. COOLING: Capacity - 18 qts. Thermostat - In cylinder head outlet (by-pass type on Model 54 only). Begins to open at 150-155ºF. Fully open at 185ºF. MECHANICAL All Mechanical data (Clutch, Suspension, Brakes, etc.) same as for Hudson Six except as noted. See Hudson Six article (preceding). LAMP BULB SPECIFICATIONS Headlight Sealed Beam Parking 55 (Front fender lamp N0. 63 (without Directional Signal 1158 with directional signal) Beam Indicator 51 Instr. Panel 51 (Speedometer Lamp No. 55 (52, 54), No. 51 (51, 53) Ignition Lock 55 Clock 55 Stop-Tail 1154 Rear License 63 Dome & Reading 88 FRONT SUSPENSION SPECIFICATIONS Kingpin Inclination 4º36 Caster Neg. ¼º to Pos. ¼º Camber ¼º to ¾º Toe In 0 to 1/16 Steering Geometry (Inner Wheel) 30 0º +/- ½º On Hudson models Outer wheel turned 25º

H U D S O N MAINTENANCE NOTES 1940-1942 Models

H U D S O N T E C H 2004

1940-1942 Hudson Special Service Notes NOTE: Through-out this document reference will be made to Special Tools. While these tools are available, in most cases suitable replacements will have to be utilized. 1940-1942 MODELS Hood ENGINE HOOD LOCK: - Alligator type hood (hinged at front) with integral side panels and instrument panel lock. To raise hood, push forward on lock handle located under edge of instrument panel to left of steering column, lift rear of hood. HOOD Removal -Unlock and raise hood. Disconnect hood light wires from terminals on fender junction block. Remove hood-to- hood support bolts and hood-to-hood hinge bolts. Lift hood straight up and remove from car. Align Hood and Front Fenders as directed below Radiator Louver Panel Removal - Remove panel- to-fender bolts from under fender. Remove front bumper bolt and loosen rear bolt permitting bumper assembly to be lowered, Remove center front screw from under panel and lift panel off. 1940-1941 MODELS HOOD AND FRONT FENDER ALIGNMENT: -U- shaped hood hinge consisting of cross-bar in back of grille with an upright arm at each end which attach to each side of hood. Hinge cross-bar equipped with loose fitting bracket at each end which is attached to frame bracket by screws. Frame and hood hinge brackets have serrated faces. Thick F and thin hinge positioning washers assembled on each end of hinge cross-bar and are retained by a large cotter pin. Each front fender positioned by brace rod anchored to frame at lower end and to fender bracket on upper end by means of positioning nuts. HOOD Adjustments - Hood alignment can be adjusted at three points as follows: For full fore-and-aft hood movement, loosen hood-to hood hinge bolts (three on each side along lower edge of hood). For slight sidewise or lengthwise movement, loosen hood hinge frame bracket-to-frame bolts. To position hood hinge assembly for sidewise movement, take out large cotter pin in each end of hinge cross-bar and add or remove washers for correct fit. Fender Adjustment - Fender fit can be adjusted by means of positioning nut on each side of fender bracket at upper end of brace rod. Separate brace rod for each fender located under hood behind radiator louver panel. Radiator Louver Panel Adjustment - Louver panel fit can be adjusted by loosening louver-to-fender bolts on outer ends of panel. Bolts on back side of panel and are accessible from behind panel with hood raised. Louver panel should be pushed forward as far as possible for correct fit. 1942 MODELS HOOD AND FRONT FENDER ALIGNMENT: - Hood alignment can be obtained by loosening fender bracket bolt at hood hinge (lower end of each hood hinge arm behind radiator louver panel). Bolt hole in each fender is enlarged which permits hood being shifted until fitted properly. Hinge to fender bracket bolt should be installed as follows: Place flat washer on bolt, then rubber shouldered washer and assemble in hood hinge hole (see that rubber washer seats properly). slide second rubber shouldered washer, plain washer and spring over bolt, screw bolt in fender bracket and install locknut. Front Fender Alignment - Fenders can be fitted for sidewise movement at front end by means of adjusting nut and locknut on fender brace rods under hood behind radiator louver assembly. Adjust fenders to obtain proper fit along hood. FRONT FENDERS 1940-1941 MODELS FRONT FENDER REMOVAL: - Unlock and raise hood. Disconnect headlamp wires at junction block, unclip wires from fender and dash and push headlamp cables through hole in fender (remove battery if left fender to be removed). Remove fender bolts at following points: running board, brace rod top nut, louver panel, fender cross member (with spacers), brace to cross member screw, core baffle to fender screws (right fender only), radiator lower tank shield screws, hood support screws, apron support to inspection cover screw, and horn bracket to frame screws. Lift fender off. - 1 -

Front Fender (Cont d) Right Front Fender Inspection Hole Plate Removal: - This Plate replaces fender dust shield (now welded to fender) used on 1939 models for access to valve tappets, fuel pump, and oil pump. To remove, unlock and raise hood, remove horn mounting bolts and push horns forward (in engine compartment). Raise front end of car, remove right front wheel and 12 cap screws along the top, bottom and front edge of plate (under fender). 1942 MODELS FRONT FENDER REMOVAL: - Remove wheel, raise hood and support in open position. Remove battery (if left fender being removed). Disconnect light wires at junction block on left fender (if right fender being removed pull wires back through hole in fender and remove grommet). Take off dust shield hole cover (right fender only). Remove fender screws and bolts as follows: 2 bolts at hood support, 2 Phillips head screws at radiator tank lower shield, all screws in radiator baffle and remove baffle, 2 hex head bolts in louver end bracket, 1 hex head bolt at frame bracket (under car), 2 hex head bolts at frame cross member, 4 hex head bolts at front bumper splash guard, 6 hex head bolts at cowl, 2 hex head bolts at hood hinge bracket, and fender brace rod nut. Lift fender off car. Mouldings, lamp and brace can be disassembled from fender after fender removed from car. NOTE - When installing fender, assemble headlamp after fender installed on car. Fender to cowl bolts should not be tightened until hood fitted to fender. CYLINDER HEAD CYLINDER HEAD INSTALLATION: Use a Torque Wrench to tighten cylinder head stud nuts, tighten in correct sequence as shown in the diagrams. Procedure for tightening Cast Iron and Aluminum heads is as follows: Cast Iron Heads - With engine cold, tighten all nuts evenly to correct tension. Then run engine until it is thoroughly warmed up and recheck all nuts (additional tightening may be necessary for correct tension). Aluminum Heads - With the engine cold, tighten all nuts to correct tension. Run engine until thoroughly warm, allow engine to cool off, and then recheck all nuts. Do not tighten aluminum heads when warm. Tightening Torque - See Tightening (Torque Wrench) Specifications below. TORQUE SPECIFICATIONS 1940 Models Ft. Lbs. Ft. Lbs.. Cylinder Head Stud Nuts (6) 45 Main Bearing Stud Nuts 91-2/3 Cylinder Head Stud Nuts (8) 55 Connecting Rod Bolt Nuts 52½ 1941-1942 Models Ft. Lbs. Ft. Lbs. Cylinder Head Stud Nuts (6) 40 Differential Carrier Nuts 37 Cylinder Head Stud Nuts (8) 50 Axle Shaft Nut 95 Spark Plugs (14 MM. Type) 28 Wheel Nuts 65 Main Bearing Bolts 75 Brake Anchor Pin Nuts 85 Connecting Rod Bolt Nuts 40 Clutch & Brake Pedal Nuts 22 Flywheel to Crankshaft 45 Steering Wheel Nut 25 Water Jacket Cover Bolt 15 Pitman Arm Nut 140 Front Engine Support Bolt 45 Steering Arm Nut 105 Clutch Cover Mounting Bolts 22 Steering Center Arm Bolt Nut 65 ENGINE REMOVAL 1940-1942 MODELS Removal: - All engines can be removed as follows: Remove hood (see Hood Removal), front seat cushion, accelerator pedal, front floor mat, transmission hole cover, clutch housing to engine bolts, engine ground strap, radiator core (see Radiator Core Removal), radiator stay rods and horns. Disconnect generator, starter, temperature gauge, and oil check valve wires and remove wiring harness from clips on left side of engine. Disconnect flexible fuel pump feed line and remove fuel - 2 -

Engine Removal (Cont d) line to carburetor. Disconnect throttle linkage leading from accelerator cross shaft and remove cross shaft (pull shaft toward spring and slip shaft out of opposite bracket). Disconnect windshield wiper hose at manifold. Remove spark plug wires and bracket, distributor cap, carburetor and air cleaner. Disconnect exhaust pipe at manifold. Remove front engine support bolts and nuts. Hoist engine out of car (use Tool J-917 attached to engine) move engine forward carefully to disconnect from transmission mainshaft. Finally, remove distributor, generator, fuel pump and clutch. Installation - Reverse procedure listed above and note following point. Wrap a piece of soft wire around clutch throwout bearing oil seal with ends of wire extending up through clutch housing, lower engine in place (use care not to damage clutch driving plate assembly when engaging transmission mainshaft), pull wire out (this will prevent edge of seal from curling over). ENGINE MOUNTINGS 1940-1942 MODELS ENGINE FRONT SUPPORT REMOVAL: - Drain cooling system. Remove generator, fan belt, radiator outlet hose and raise front end of car. Remove radiator lower tank shield, vibration dampener (see Vibration Dampener Removal) and timing gears (see Timing Gear Removal). Block up front end of engine and remove front engine mounting bolts and nuts. Take out engine support bolt and locks and remove plate. Installation - Reverse procedure listed above, note the following points: Clean front face of cylinder block thoroughly and use new gaskets. When replacing engine mounting bolts, tighten nuts until upper and lower plates are against spacer. ORIGINAL BORE 1940-1942 MODELS ORIGINAL BORE SIZE: - Original production (new engine) bore size indicated by code mark stamped on lower edge of valve chamber opposite cylinders. See table below for size and code marks. Code Cylinder Code Cylinder Mark Diameter Mark Diameter A 3.000" AO 3.010" B 3.0005" BO 3.0105" C 3.001" CO 3.011" D 3.0015" DO 3.0115" E 3.002" EO 3.012" Note - Recondition cylinders to size for which replacement pistons and rings available (see below). Original Piston Size - Sizes and markings for original pistons same as for Replacement Pistons. See Replacement Piston Table and Piston Markings. PISTONS 1940-1942 MODELS REPLACEMENT PISTONS: - Standard and oversize pistons marked by letter stamped on head and furnished for cylinder diameter sizes listed below. See Replacement Rings (following) for ring sizes. Piston Piston Cylinder Mark Size Size B 2.9985 3.000" & 3.0005" D 2.9995 3.001" & 3.0015" F 3.0005 3.002" & 3.0025" J 3.0025 3.004" L 3.0035 3.005" BO 3.0085" 3.010" & 3.0105" DO 3.0095" 3.011" & 3.0115" FO 3.0105" 3.012" & 3.0125" LO 3.0135" 3.015" BB 3.0185" 3.020" DD 3.0195" 3.021" FF 3.0205" 3.022" - 3 -

Pistons (Cont d) Piston Markings - Code marks stamped on head of piston indicate the following: Letter Indicates piston size and cylinder size for which piston to be fitted (see table below). Number indicates piston weight in ounces (if 2 numbers used, one over the other, to number indicates weight in ounces, lower number ¼ ounces). All pistons in one engine should be of same weight (carry same weight marks on head). NOTE - original factory installed pistons carry two additional numbers, one number indicates cylinder in which piston installed, second number indicates cylinder block number. PISTON RINGS 1940-1942 MODELS REPLACEMENT RINGS: - Use standard or oversize rings for replacement pistons listed above. Ring size and pistons for each size as follows: Ring Size Piston Mark Ring Size Piston Mark 3.000" B, D, F 3.010" BO, DO, FO 3.003" J 3.015" LO 3.005" L 3.020" BB, DD, FF Note - If rings filed, keep clearance at pin uniform with end gap (.005" minimum). PISTON PINS 1940-1942 MODELS PISTON PIN SERVICING: - When replacing pins car manufacturer recommends that oversize piston pins be fitted to the piston boss and new piston pin bushings be installed in rod. Piston pin bosses are diamond- bored and should not be reamed. Replacement Piston Pins - Furnished in standard size and.002",.005",.010" oversize. Fitting Pins - Pins should be a hand press fit in piston with piston heated to 2001F. (heat in boiling water or electric furnace - do not use torch or direct heat). Replace pin bushing in rod and ream or burnish to.0003 greater diameter than pin (giving desired.0003" clearance on pin). To check pin fit in rod bushing, hold piston with rod in horizontal position, rod should just turn on pin of own weight. CAUTION - Do not ream piston pin bosses in piston. ORIGINAL BEARING SIZES 1940-1942 MODELS CRANKSHAFT SIZE CODE: - Cars equipped with.010" undersize main bearing pins and connecting rod pins identified by marks stamped on left front corner of cylinder block on bottom face beside oil reservoir gasket (visible without removing oil reservoir) as follows: MU - 010" undersize main bearing pins. PU -.010" undersize connecting rod pins. PMU - 010" undersize main and connecting rod pins. NOTE - These pins require.010" undersize bearings. CONNECTING ROD & BEARINGS 1940-1942 MODELS CONNECTING ROD AND MAIN BEARING PALNUTS: - Palnut (locknut or companion nut) used in place of cotter pin to lock connecting rod bolt nuts (starting with 1938 models), and main bearing cap stud nuts (starting with 1941 models). Palnut consists of a small single thread nut stamped from light gauge tempered steel. Installation - After tightening regular nuts (refer to Tightening Specifications - Torque Wrench data on preceding pages), install palnut with smooth face toward nut, turn palnut up finger tight, then lock in place with wrench an additional 1/4-1/3 turn. NOTE - Palnuts should not be re-used. - 4 -

CRANKSHAFT & MAIN BEARINGS 1940-1942 MODELS CRANKSHAFT REMOVAL: - Crankshaft can be removed with engine in chassis as follows: Remove hood (see Hood (Hood) Removal above), radiator (see Radiator Core Removal following), vibration dampener (see Vibration Dampener Removal following), timing gears (see Removal instructions following), transmission and clutch (see Hudson 6 and 8 Car articles for data). Remove flywheel and engine oil pan and tray. Remove connecting rod bearing caps and push rods up clear of crankshaft. Remove front and rear main bearing caps with Puller Tool J-377. Remove center main bearing cap with care and take out crankshaft. Installation - Reverse removal procedure listed above. Install new oil seals at front and rear main bearing cap (see Front and Rear Main Bearing Cap Installation following) and new palnuts on main and connecting rod bolts (see Connecting Rod and Main Bearing Palnut Installation above). 1940 MODELS MAIN BEARINGS: - Adjustment - Laminated shims provided on top of caps. Remove caps and remove shims until clearance is.001". See Crankshaft Installation Replacement Bearings: - Finished bearings (with attaching screws) furnished standard and.010" undersize (see Crankpin Size Code for original bearing sizes). Unfinished bearings furnished with 1/32" extra stock and must be line-reamed (see below). Removal: - Bearing shells are removable type and are held in case and caps by screws. To replace bearings, crankshaft must be removed (see crankshaft removal above). With shaft out, take out screws securing shells in cap and case. Installation: - crankshaft removed, secure bearing shells in case and cap with machine screws. If unfinished bearings installed, line-ream as directed below. Install crankshaft (see Crankshaft Installation). Add or remove shims on bearing caps until.001" clearance obtained. Secure caps in place. Line-Reaming Main Bearings: - Where unfinished bearings used for replacement, bearings must be line-reamed to size as follows: Install bearings in cap and case, place.021" shims between case and cap and tighten cap, then line ream bearings. Thrust flange on center (Six), #3 (Eight) bearing must be faced for.006" endplay. 1941-1942 MODELS MAIN BEARINGS MAIN BEARINGS:-Removal and Installation (with engine in car). Bearing halves are retained in crankcase and caps by a machine screw in each half, requiring removal of crankshaft for access to screw in upper half. Remove crankshaft (see Crankshaft Removal above), take out machine screw in each bearing half in crankcase and caps, remove bearings. Reverse removal instructions to install bearings. NOTE - No shim pack used on 1941-42. Replacement Bearings - Hudson replacement bearings furnished reamed (standard size or.010" undersize) and not reamed (see Line-Reaming data below). Reamed bearings carry punch marks on one side and when installed these marks should be together and on the same side for all bearings so that they will be in the same position as when reamed. IMPORTANT - Lower half of bearing shell extends.002" above surface of cap (allows bearing to seat in cap and crankcase when stud nuts tightened). Fitting Bearings - See Replacement Bearings above. Bearings can be fitted with shims (do not file caps) as follows: Install bearing shells in caps and case and oil bearing surface. Fit each bearing separately. Install crankshaft and bearing cap (on front and rear bearings, caps should be centralized on studs by inserting ¼" drill rod in vertical packing holes on each side of cap), tighten stud nuts to 75 ft. lbs. Test bearing fit by using two hands pull on crankshaft, shaft should start hard but be able to be turned over. If shaft cannot be moved, insert.005" shim between cap and case (trim shim flush with bearing shell). Repeat test until shaft turns easily. Shims are furnished.003" and.005" thick. Line-Reaming Bearings - See Replacement Bearings above. Semi-finished bearings available for service which must be line-reamed on engine as follows: Place bearing shells in place in caps and crankcase, and secure with machine screws (see that screws are seated in countersink hole in shells), bearing shell in cap should project.002" above cap while shell in case should be flush, tighten caps to 75 ft. lbs. (front and rear caps should be centralized on studs by inserting ¼" drill rod in vertical packing holes on each side of cap). Line-ream bearings for.001" maximum clearance on crankshaft and face flange on center bearing for.006" shaft endplay. - 5 -

Main Bearings (Cont d) Front and Rear Main Bearing Cap Removal and Installation - These caps fit in machined openings in crankcase. Front cap has vertical and horizontal grooves, rear cap vertical grooves only, with packing installed in these grooves to seal caps in place. After caps removed, grooves in caps and crankcase must be cleaned of all old packing. If old packing not removed from crankcase, oil passages may be clogged. When installing main bearing caps, insert new packing in horizontal grooves in upper end of front cap first, then install packing in vertical grooves on each side of front and rear caps (horizontal grooves not used on rear cap). Lower half of oil retainer on rear cap should be a tight fit against upper halt to prevent oil leaks at this point. VIBRATION DAMPENER 1940-1942 MODELS VIBRATION DAMPENER REMOVAL: - Dampener can be removed from beneath car without removing radiator louver panel or radiator (radiator must be removed on Eight only) as follows: Remove radiator louver panel center moulding, front bumper bracket bolts permitting bumper to drop down, and fan belt. On Eight only, remove radiator (see Radiator Core Removal data above). Unscrew crankshaft starting jaw from end of crankshaft. Install jaw of special vibration dampener removal tool (or appropriate replacement tool) over dampener and place screw of tool through starting crank hole. Withdraw dampener by turning screw of dampener tool and remove from beneath car (6), or above (8). CAMSHAFT & BEARINGS 1940 MODELS CAMSHAFT REMOVAL: - Remove hood (see Hood Removal), radiator (see Radiator Core Removal), radiator louver panel assembly, vibration dampener (see Vibration Dampener Removal), fan blades, fan belt, timing gear cover, camshaft gear (3 bolts), valve chamber cover, cylinder head, valves, tappets, oil pump, fuel pump and distributor (on Six cylinder cars, remove distributor shaft and support assembly). Loosen front engine support and raise front end of engine until camshaft clears radiator tank lower shield. Withdraw camshaft with thrust button and spring. CAUTION - Two special washer head timing gear cover bolts used at lower left corner of cover and must be re- installed in same holes when cover replaced. Camshaft Bearing Removal: - Remove camshaft as directed above. Remove oil pan and bearings. See Rear Camshaft Bearing Installation for Six Cylinder Engines following. Replacement Camshaft Bearings: - Finished bearings available which are reamed sufficiently oversize to provide correct running fit when installed in engine without reaming or scraping. Standard bearings with added wall thickness provided for installations where reaming equipment to be used. These bearings must be line-reamed for.001" clearance. Rear Camshaft Bearing Installation (Six Cylinder only): - Due to new location of distributor at top rear of cylinder block, distributor gear is now cut in rear bearing journal with a special cut-out machined in camshaft rear bushing for the distributor support shaft gear. Whenever rear bearing replaced, this cut-out must be made in bearing after installing in engine as follows: With distributor driveshaft and support assembly off engine, remove driveshaft from support, insert cutting tool in support (making up cutting tool by mounting 1 1/8 hole saw on end of 12" length of 1/2" cold rolled stock, thread opposite end for hex nut), install support (with cutting tool) on engine and tighten support anchor bolt. Cut bearing (use nut on end of cutting tool and turn with ratchet wrench) using light pressure to give a clean cut. IMPORTANT - Place oil soaked rag under bearing to catch chips (avoiding necessity of removing crankshaft). Remove support (together with cutting tool). Drill hole in side of bearing for anchor plug by using 3/8" drill inserted in camshaft anchor plug hole on right side of engine. Install new anchor plugs. Remove oil soaked rag and use extreme care to remove all bearing chips and cuttings. 1941 MODELS CAMSHAFT CHANGE ON 3" x 4-1/8" SIX CYLINDER ENGINE: - New design camshaft used on Model 10 engine after car no. 6848. Cams machined to new contour, intake and exhaust cams alike, which requires new valve timing and tappet clearance (see 1941 Hudson Six car article for data). Identification - New camshaft used after car no. 6848 and may be identified by letter "X" stamped on front face of shaft behind camshaft gear. Engines with this camshaft carry a decalcomania on valve cover stating "Tappet Clearance Hot, Inlet.010", Exhaust.012". - 6 -

Camshaft (Cont d) Interchangeability - This new type camshaft can be installed on early 1941 engines and all 1940 engines with a bore of 3" and stroke of 4-1/8" but must not be used in the 3" x 5" six cylinder engine, When this camshaft installed on engines originally equipped with old style camshaft, a decalcomania with the new tappet clearance figures of.010" Inlet and.012" Exhaust Hot, should be installed on cover plate. 1941-1942 MODELS CAMSHAFT SERVICING: - Camshaft Removal. Remove hood (see Hood (Hood) Removal above), radiator (see Radiator Core Removal following), radiator louver panel, vibration dampener (see Vibration Dampener Removal above), fan blades, fan belt, timing gear cover and gasket, vibration dampener spacer, camshaft gear (3 bolts and lock wire), valve chamber cover, valves, tappets, oil pump, fuel pump, and distributor. Camshaft with thrust button and spring can then be withdrawn from engine by pressing down on radiator lower tank shield Camshaft Installation - See Timing Gear data below - (note CAUTION on cover bolt installation) Camshaft Bearings - New thin type steel-backed babbitt-lined bushings used (cannot be used for service on earlier cars). Factory reamed bearings available for replacement which require no reaming or scraping, Standard bearings with extra wall thickness permitting line-reaming on engine also available (line-ream for.001" bearing clearance). Camshaft Bearing Removal & Installation Bearings can be removed as follows: Remove camshaft (see Camshaft Removal above), remove oil pan and tray, press old bearings out. New bearings can be installed as follows: Press new bearings in place with locating notch on front edge at top (back of bearing has 1/16 chamfer so that bearings can be readily installed in crankcase, bearing material on front of bearing has light chamfer at front). Coat bearings with light engine oil, install camshaft. TIMING GEARS 1940-1942 MODELS REPLACEMENT TIMING GEARS: - New Type Gears Starting with 1941 engines timing gears have new design 20º pressure angle teeth (formerly 14½º) providing increased gear life and quieter operation. All other specifications (material and size) same as for preceding gears These new type gears can be used for replacement on 1940 & earlier cars in sets Identification Marking - Figure '20' used to mark these new design gears. Cast on spoke of camshaft gear (also carries mark 'FRONT'), and moulded on front face of camshaft gear. Timing Gear Backlash -.002-.004". 1940-1942 MODELS TIMING GEAR REMOVAL: - Drain cooling system. Remove fan belt, radiator outlet hose, vibration dampener (see Vibration Dampener Removal), timing gear cover bolts, cover, cover gasket and vibration dampener spacer. Turn engine over until timing marks (2 teeth mark on camshaft gear, 1 tooth mark on crankshaft gear) coincide. Remove camshaft gear (retained by 3 capscrews and lock wire). Remove crankshaft gear using Puller Tool J-471. Gear Installation - Reverse removal procedure above (use Tool J-483) to replace camshaft gear). Use new timing cover gasket and check leather oil seal in timing gear cover. If new seal to be installed, coat seal seat in cover with red or white lead and press seal securely in place. Do not curl edge of seal over when cover installed. CAUTION - On 1940-41 engines, two special washer head timing gear cover bolts used at lower left corner of cover and must be re-installed in same holes when cover installed. All bolts are washer head type on 1942 engines. Replacement Camshaft Gear: - A special.008" oversize camshaft gear (marked with daub of yellow paint on front face of gear) available for service. Gear backlash.002-.003" (Six),.004-.005" (Eight),.002-.004" (all 1942 engines). VALVE SYSTEM 1940-1942 MODELS 1940-1942 MODELS VALVE LIFTER REMOVAL: - Tappets (lifters) may be removed without removing cylinder head as follows: Right Front Fender Inspection Hole Plate on '40-'42 cars (see first page). Remove valve cover, break loose tappet adjusting screws, remove spring seat retainer using Tool J-915, remove tappet adjusting screw, spring seats, spring dampeners, tappet guide clamp screws and clamps. Take out tappet and guide assemblies. - 7 -

OILING SYSTEM 1940-1942 MODELS CHECKING OILING SYSTEM: - See that oil lines securely in place and not bent or damaged. Drop oil reservoir and clean thoroughly every six months. When installing oil reservoir, check flapper valve on rear main bearing oil return tube (soldered in rear of reservoir). Valve must work freely and should be slightly open with reservoir level. Holes in gaskets between crankcase and oil dipper tray and between tray and reservoir must align with oil return tube and register with hole in bearing cap. NOTE - On 1942 engines, oil suction pipe has been redesigned to bring lower end into center of oil reservoir which insures constant supply to oil pump. OIL SUCTION PIPE SEAL: - Synthetic rubber suction pipe oil seal fitted in counter-bore in cylinder block flange at point where suction pipe passes through oil pan flange. Seal fitted around pipe and compressed by pan (pan gasket widened at this point). NOTE - Use new seal whenever pan installed. RADIATOR 1940-1942 MODELS RADIATOR CORE REMOVAL: - Drain radiator and remove upper and lower hoses. Disconnect radiator stay rod bolts at radiator and remove 2 radiator mounting bolts. Lift core out of car. CLUTCH NOTES 1940-1942 MODELS CLUTCH OIL: - Servicing-Hudsonite (oil) in clutch must be renewed every 5000 miles. Turn engine over until hexagonal drain plug on front face of flywheel is visible in timing inspection hole on left side of motor rear support above starting motor. Remove hex head drain plug with a socket wrench, turn engine over 1/3 revolution until star on flywheel Is at inspection hole, allow engine to stand in this position one minute to drain old oil, turn engine over until filler plug is again at inspection hole, insert 1/3 pint Hudsonite (use J-485 gun or appropriate replacement) replace plug. Capacity & Oil - 1/3 pt. Hudsonite Clutch Compound. - 8 -