Technical Description PR 751 Mining Dozer Engine Output 295 kw/401 HP Operating Weight 39.1 45.0 t/86,300 99,300 lb Hydrostatic Travel Drive The Better Machine.
Diesel Engine Cummins-Diesel Engine KT 19-C Rating per ISO 9249 295 kw (401 HP) at 1800 RPM Displacement 18.9 l (1155 cu.in.) Bore/Stroke 159/159 mm (6.26/6.26 in) Design 6 cylinder in-line engine, water-cooled, turbocharged Injection direct fuel injection Lubrication pressurized lube system with 2 full flow and 1 bypass filter and integrated oil cooler, deep oil pan for inclinations, engine lubrication to an inclination of up to 45h to each side Operating voltage 24 V Alternator 50 Amp. Starter 10 kw (13.4 HP) Batterie 170 Ah Travel Control 1 Joystick lever with servo-control for all travel functions: travel direction, speed, steering and counterrotation Speed range 1 0 5.9 km/h (3.6 mph) Speed range 2 0 9.5 km/h (5.9 mph) Engine speed sensing control engine speed sensing horsepower control system assures constant balance between travel speed and necessary drawbar pull, avoiding engine overload Straight line travel electronically controled Parking/ emergency brake automatic spring activated parking brake, released by servo pressure during travel Safety lever locks the servo-circuit and automatically activates parking brake Emergency shut off push button on intrument panel immediately activates parking and emergency brake Travel Drive Design closed-loop hydrostatic drive Pump flow ma. 2 439 l/min. (116 gpm) Ma. Pressure adjusted to 420 bar (6090 PSI) Travel speed 0 9.5 km/h (0 to 5.9 mph) infinitely variable, forward and reverse Steering hydrostatic Service brake hydrostatic Cooling system 2 gear pumps circulate hydraulic oil through 2 rear mounted oil coolers with hydraulic driven, thermostatically regulated fans Filter system 2 filter cartridges for each pump unit and return filter with magnetic rod in the hydraulic tank Finale drive 3-stage spur gear drive formed as modular components Implement Hydraulic Hydraulic system one vane type pump for operation of front and rear mounted attachments Pump flow ma. 282 l/min. (74.4 gpm) Pressure limitation ma. 200 bar (2900 PSI) Control valve 4-spool control block Filter system return filter with magnetic rod in hydraulic tank Control single servo-assisted joystick lever for blade hoist and tilt functions, electrically controlled blade float and quick drop Attachments Front semi-u-blade, U-blade or mechanical angled blade with tilt Rear ripper, hydraulic winch or drawbar Pivot points maintenance-free, with hardened and polished pins and bushings Track Frame Design maintenance-free tractor type track frames Mount track roller frame mounted on sprocket ale, equalizer bar for front support, oscillation ± 3.5h Chains oil lubricated with etreme service track pads, track adjustment by grease-cylinder, pretensioning by spring-unit Chain links 41 Sprockets 3 replaceable segments Track rollers 7 Carrier rollers 2 Operator s Compartment Cab resiliently mounted with integrated ROPS (Roll Over Protectiv Structure, SAE J 1040/ ISO 3471) and FOPS (Falling Objects Protective Structure, SAE J 231/ISO 3449), can be tilted with hand pump to 40h to the rear for accessibility to machine components, all around safety glass Operator s seat fully adjustable, body contoured seat with shock absorber Instrument panel comprehensive instrument panel with acoustical warning buzzers, on the right side of the operator s seat Ventilation pressurized filtered air ventilation, 3-stage blower, 4 air nozzles, sliding window Heater hot water heater Refill Capacities Fuel tank 610 l (161 gal) Cooling system 75 l (19.8 gal) Engine oil 50 l (13 gal) Splitterbo 3 l (0.8 gal) Hydraulic tank 275 l (72.6 gal) Final drive, each 61 l (16.1 gal) Technical Data 2
Basic Machine C Height over cab 11 9 /3580 D Height over ehaust pipe 10 10 /3300 E Height over engine cover 7 10 /2400 F Overall length 16 /4865 G Width over frame mounting trunions 10 4 /3160 Q Ground clearance 1 6 /450 M Crawler length 14 7 /4436 L Distance idler/sprocket center 10 4 /3150 W Track gauge 7 2 /2180 N Width of trackpads 22 /560/24 /610/28 /711 S Heigth of grousers 3 1 /16 /78 Ground contact area trackpad-width: 22 /560 mm 5,470 sq.in./3.53 m 2 24 /610 mm 5,950 sq.in./3.84 m 2 28 /711 mm 6,940 sq.in./4.48 m 2 3
Semi-U-Blade Blade capacity 12.7 cu.yd/9.7 m 3 A Height of blade 5 5 /1650 B Width of blade 13 5 /4080 H Lifting height 4 2 /1265 K Depth below ground 2 /610 P Ma. blade pitch 10h T Ma. tilt 3 1 /950 U Overall length with blade straight 20 8 /6290 Operating Weights and trackpads 22 /560 mm 86,200/39,100 24 /610 mm 86,600/39,300 28 /711 mm 87,700/39,800 Ground Pressures PSI/kg/cm 2 and trackpads 22 /560 mm 15.65/1.10 24 /610 mm 14.51/1.02 28 /711 mm 12.66/0.89 Attachments 4
U-Blade Blade capacity 14.3 cu.yd/10.9 m 3 A Height of blade 5 5 /1650 B Width of blade 14 1 /4300 H Lifting height 4 1 /1250 K Depth below ground 2 /600 P Ma. blade pitch 10h T Ma. tilt 3 3 /1000 U Overall length with blade 21 1 /6425 Operating Weights and trackpads 22 /560 mm 88,000/39,900 24 /610 mm 88,900/40,300 28 /711 mm 89,700/40,700 Ground Pressures PSI/kg/cm 2 and trackpads 22 /560 mm 15.9/1.13 24 /610 mm 14.8/1.05 28 /711 mm 12.8/0.91 5
Angle Dozer Blade Blade capacity 6.7 cu.yd/5.1 m 3 A Height of blade 3 11 /1200 B Width of blade 15 9 /4800 B1 Transport width 14 3 /4355 H Lifting height 4 8 /1410 K Depth below ground 2 3 /675 P Ma. blade pitch 0h Y Blade angle ± 25h T Ma. tilt 1 6 /450 G Width over frame mounting trunions 10 4 /3160 R Width over C-frame 11 6 /3500 U Overall length with straight blade 20 10 /6350 U1 Overall length with angled blade 24 0 /7320 Operating Weights and trackpads 22 /560 mm 86,800/39,390 24 /610 mm 87,250/39,590 28 /711 mm 88,250/40,040 Ground Pressures PSI/kg/cm 2 and trackpads 22 /560 mm 15.87/1.12 24 /610 mm 14.65/1.03 28 /711 mm 12.72/0.89 Attachments 6
Radial Single-Shank Ripper Radial Multi-Shank Ripper Features Radial ripper with hydraulic pitch adjustment and hydraulic pin puller. Ripper tips: ESCO We recommend using the ripper only with additional front mounted weight. Features Radial ripper with hydraulic pitch adjustment Ripper tips: ESCO We recommend using the ripper only with additional front mounted weight. D Ground clearance below tool bar 10 /255 G Overall beam width 4 6 /1370 H Ma. clearance under tip 3 7 /1100 K Ma. penetration 4 0 /1230 M Overall length, raised position 7 4 /2230 N Overall length, lowered position 8 10 /2680 X Slope angle 35h Y Shank adjustment angle 56h D Ground clearance below tool bar 8 /200 F Ripping width 7 2 /2180 G Overall beam width 7 5 /2270 H Ma. clearance under tip 2 4 /700/3'3"/1000 K Ma. penetration 2 9 /835/1'9"/535 M Overall length, raised position 6 0 /1830 N Overall length, lowered position 7 6 /2280 W Distance between shanks 3 5 /1050 X Slope angle 25h/30h Y Shank adjustment angle 56h Weight Ripper complete 10,600/4,800 Weight Ripper complete 12,150/5,500 7
Basic machine Operator's cab Cover engine hood Cover oil cooler Ehaust catalyst Towing hitch rear Towing lug front Forestry equipment Woodchip handling equipment Coal handling equipment Landfill equipment Filling with environmental friendly oil Filling with oil SAE 10 Filling with oil SAE 30 Tank guard complete Tank guard bottom Refuelling pump electrical Belly pans heavy duty Fire supression system engine compartment Connector eternal electric power Cold start device ether Cold start device glow plug Radiator coarse mesh Radiator guard 2-piece, hinged Fan guard Engine oil cooler Engine doors perforated Engine doors hinged Lugs for crane lifting Special paint Settling pund equipment Fuel water separator Fuel water separator with electric heater Air filter dry-type, dual step Wear guard for radiator Precleaner with automatic dust ejector Preheater for engine electric Tool kit in batteries compartment Travel drive Parking brake automatic Function control automatic Control single lever Load limit control electronic Travel control electronic Travel control 2-speed Travel control 3-speed Hydrostatic travel drive Emergency stop Oil cooler Safety lever Undercarriage Track shoes etreme service (ESS) Track frame closed Sprocket segments bolt-on Master link 2 piece Track shoes with relief holes Tracks oil lubricated Track guide center part Track guard Undercarriage etented Undercarriage low ground pressure Undercarriage standard Undercarriage etra wide tracks Track frames oscillating +/- 3h Sprocket segments with recesses Electrical system Starter motor 6,6 kw Starter motor 10 kw Working lights rear 2 units Working lights front 2 units Battery main switch electric Batteries, heavy duty cold start On-board system 24 V Alternator 50 A Alternator 80 A Back-up alarm Beacon Horn Lights additional rear 2 units Ligths additional on lift cylinders Lights additional on engine hood Standard Option Stowing bo Ash tray Rear mirror outside left Pressurizer with air filter Operator s seat 6-way adjustable Operator s seat air suspended Fire etinguisher Dome light Coat hook Air conditioner FM radio Radio installation kit ROPS/FOPS-cab sound supressed ROPS-canopy Rear mirror inside Windscreen washer Windscreen wipers front, rear Sliding windows Protective grids for windows Safety glass tinted Sun blinds Etra cab heater Cabin heater warm water Instruments Indicators Battery charging Hour meter Electronic control Speed range Engine oil pressure Water temperature Oil pressure cooling circuit Oil level final drives Float position blade Fuel level Contamination hydraulic filter Contamination air filter Cold start Diesel engine Implement hydraulic Hydraulic control 6-way-blade Hydraulic control ripper Hydraulic control winch Variable flow pump, load sensing Oil filter with strainer in hydraulic tank Blade quick drop Blade float position Control block for 4 circuits Hydraulic servo control Hydraulic tank oil level control Attachments Mounting plate rear for eternal tools Drawbar rear swivelling Drawbar rear rigid Counterweight rear Ripper single shank Ripper 3 shank Ripper 5 shank Bumper rear Rake for landclearing 6-way-blade outside mounted 6-way-blade with hinged corners 6-way-blade inside mounted Blade straight blade Blade woodchip-u-blade Blade coal-u-blade Blade landfill blade Blade angle blade Blade semi-u-blade Blade trimming blade Blade U-blade Push plate for blades Winch Rock guard for semi-u-blade Spill plate Wear plates for blades Wear plates for push arms Standard Option LWT/VF 8433605-1.5-01.02 Printed in Germany by Eberl. Illustrations and data may differ from standard equipment. Subject to change without notice. LIEBHERR-WERK TELFS GMBH, Hans-Liebherr-Straße 35, A-6410 Telfs, ç (0 52 62) 6 00, Fa (0 52 62) 6 00 72 www.liebherr.com, e-mail: info@lwt.liebherr.com With compliments: