Section 11 System Diagrams Page 11-1 Section 11 - System Diagrams Section Contents Page Overview...11-3 Flow Diagram, Fuel System...11-4 Flow Diagrams, Lubricating Oil System...11-5 Flow Diagrams, Cooling System...11-8 Flow Diagram, Air Intake System...11-11 Flow Diagram, Exhaust System...11-12 Assembly Diagram, Raw Water Piping...11-13
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Section 11 System Diagrams Page 11-3 General Information Overview The following drawings show the flow through the engine systems. Although the parts can be different for various applications and installations, the flow remains the same. The systems shown are as follows: Fuel System Lubricating Oil System Coolant System Intake Air System Exhaust System Raw Water System Knowledge of the engine systems can help in troubleshooting, servicing, and general maintenance of the engine.
Page 11-4 Section 11 System Diagrams Flow Diagram, Fuel System 1. Fuel from supply tank 8. Bosch PES.MW injection pump 2. Pre-filter or screen 9. Bosch PES.A injection pump 3. Fuel transfer pump 10. Bosch PES.P injection pump 4. Fuel/water separator 11. Fuel drain manifold 5. Fuel filter 12. High-pressure fuel lines 6. Low-pressure supply line 13. Hole-type injectors 7. Turbocharger boost control line 14. Fuel return to supply tank
Section 11 System Diagrams Page 11-5 Flow Diagrams, Lubricating Oil System 1. Gerotor lubricating oil pump 8. Filter bypass valve 2. Pressure regulating valve closed 9. Filter bypass valve closed 3. Pressure regulating valve open 10. Filter bypass valve open 4. From lubricating oil pump 11. To lubricating oil filter 5. To lubricating oil cooler 12. Full-flow lubricating oil filter 6. To lubricating oil pump oil pan 13. From lubricating oil filter 7. Lubricating oil cooler 14. Main lubricating oil rifle
Page 11-6 Section 11 System Diagrams Flow Diagrams, Lubricating Oil System (Cont) 1. Lubrication oil filter 3. Turbocharger lubricating oil drain 2. Turbocharger lubricating oil supply 4. To main lubricating oil rifle 1. From lubricating oil cooler 4. To piston cooling nozzle 2. Main lubricating oil rifle 5. From main lubricating oil rifle 3. To camshaft 6. To connecting rod bearing
Section 11 System Diagrams Page 11-7 Flow Diagrams, Lubricating Oil System (Cont) 1. From cam bushings 4. Rocker lever shaft 2. Transfer slot 5. Rocker lever bore 3. Rocker lever support 6. Rocker lever
Page 11-8 Section 11 System Diagrams Flow Diagrams, Cooling System
Section 11 System Diagrams Page 11-9 Flow Diagrams, Cooling System (Cont) 1. Cylinder Bloc 5. Coolant flow past oil cooler 2. Coolant inlet 6. Upper coolant manifold 3. Water pump impeller 7. Coolant flow to cylinder head 4. Coolant flow to oil cooler 1. Cylinder Head 4. Cylinder head gasket 2. Flow from upper coolant manifold 5. Coolant flow orifice 3. Flow to liner cavity
Page 11-10 Section 11 System Diagrams Flow Diagrams, Cooling System (Cont) 1. Flow past cylinder liners 2. Lower coolant manifold 1. Thermostat 6. Partial coolant flow to radiator 2. Thermostats 7. Restricted flow to bypass 3. Flow to water pump inlet 8. Flow to radiator 4. Bypass passage open 9. Bypass closed. 5. Flow from lower coolant manifold
Section 11 System Diagrams Page 11-11 Flow Diagram, Air Intake System 1. Intake air inlet to turbocharger 4. Intake manifold - integral part of cylinder head 2. Turbocharger air to charge air cooler 5. Intake valve 3. Charge air cooler
Page 11-12 Section 11 System Diagrams Flow Diagram, Exhaust System 1. Exhaust valve 3. Dual entry to turbocharger 2. Exhaust manifold - pulse-type 4. Turbocharger exhaust outlet
Section 11 System Diagrams Page 11-13 Assembly Diagram, Raw Water Piping Raw water is used to cool the engine coolant and is supplied from the fire pump prior to the pump discharge flange. It is forced through a cooling loop by fire pump pressure to the engine heat exchanger. Then it is discharged to an open waste cone. The following raw water manifold is available as an option (Cummins N Power Part No. 8683). If supplied by the customer, National Fire Protection Association (NFPA) Pamphlet No. 20 lists the components that are required. Refer to the Cooling System Specifications in Section 15 for process requirements. Refer to Raw Water Piping, Lineup, and Configuration in Section 3. 1. Supply Pressure Gauge 7. Normal Inlet Valve 2. Supply Pressure Gauge Isolation Valve 8. Normal Strainer 3. Bypass Outlet Valve 9. Normal Pressure Regulator 4. Bypass Pressure Regulator 10. Solenoid Operated Valve 5. Bypass Strainer 11. Normal Outlet Valve 6. Bypass Inlet Valve 12. 1 supply to the heat exchanger
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