Section 6 - System Diagrams

Section 6 System Diagrams Page 6-1 Section 6 - System Diagrams Section Contents Page Overview...6-3 Flow Diagram, Fuel System...6-4 Flow Diagrams, Lubricating Oil System...6-5 Flow Diagrams, Cooling System...6-8 Flow Diagram, Air Intake System...6-11 Flow Diagram, Exhaust System...6-12 Assembly Diagram, Raw Water Piping...6-13

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Section 6 System Diagrams Page 6-3 Overview General Information 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 Piping Knowledge of the engine systems can help in troubleshooting, servicing, and general maintenance of the engine.

4 Section 6 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 6 System Diagrams Page 6-5 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

6 Section 6 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 6 System Diagrams Page 6-7 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

8 Section 6 System Diagrams Flow Diagrams, Cooling System

Section 6 System Diagrams Page 6-9 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

10 Section 6 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 6 System Diagrams Page 6-11 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

12 Section 6 System Diagrams Flow Diagram, Exhaust System 1. Exhaust valve 3. Dual entry to turbocharger 2. Exhaust manifold - pulse-type 4. Turbocharger exhaust outlet

Section 6 System Diagrams Page 6-13 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 NPower Part No. 9659). 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 10 for process requirements. Refer to Raw Water Piping, Lineup, and Configuration in Section 3. 1 2 3 4 12 5 11 7 10 6 9 8 1. Supply Pressure Gauge 7. Bypass Inlet Valve 2. Supply Pressure Gauge Isolation Valve 8. Normal Inlet Valve 3. 1 supply to the heat exchanger 9. Normal Strainer 4. Bypass Outlet Valve 10. Normal Pressure Regulator 5. Bypass Pressure Regulator 11. Solenoid Operated Valve 6. Bypass Strainer 12. Normal Outlet Valve

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