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ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 200-001   Flow Diagram, Fuel System

Table of Contents

General Information

General Information

 TOC

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CAPS Fuel System

  1. Fuel from supply tank
  2. Electronic lift pump
  3. Fuel filter and water separator
  4. Fuel drain line
  5. CAPS injection pump
  6. Distributor outlet fitting
  7. High-pressure supply lines
  8. Fuel connector
  9. Injectors
  10. Fuel return to supply tank

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QSL9 Marine Applications, Cummins® Common Rail Fuel System

  1. Fuel from supply tank
  2. Fuel filter and water separator
  3. Fuel supply to ECM mounted fuel lift pump
  4. ECM cooling plate
  5. ECM mounted fuel lift pump
  6. Fuel outlet from ECM mounted fuel lift pump
  7. Fuel gear pump
  8. Fuel from gear pump to fuel filter
  9. Primary fuel filter
  10. Fuel inlet to fuel pump actuator
  11. High-pressure fuel pump
  12. Fuel outlet from high-pressure pump
  13. High-pressure pump drain flow connection
  14. Fuel rail
  15. High-pressure injector supply lines
  16. High-pressure fuel connector
  17. Fuel injector
  18. Fuel pressure relief valve
  19. Fuel injector drain flow line
  20. Fuel return to fuel cooler on sea water cooled engines only; fuel return to tank on keel cooled engines
  21. Fuel cooler (sea water cooled engines only)
  22. Fuel return to fuel tank (sea water cooled engines only).

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QSC8.3 Marine Applications (Sea Water Cooled), Cummins® Common Rail Fuel System With ECM Fuel Cooling

  1. Fuel from supply tank
  2. Fuel filter and water separator
  3. Fuel supply to ECM mounted fuel lift pump
  4. ECM cooling plate
  5. ECM mounted fuel lift pump
  6. Fuel outlet from ECM mounted fuel lift pump
  7. Fuel gear pump
  8. Fuel from gear pump to fuel filter
  9. Primary fuel filter
  10. Fuel inlet to fuel pump actuator
  11. High-pressure fuel pump
  12. Fuel outlet from high-pressure pump
  13. High-pressure pump drain flow connection
  14. Fuel rail
  15. High-pressure injector supply lines
  16. High-pressure fuel connector
  17. Fuel injector
  18. Fuel pressure relief valve
  19. Fuel injector drain flow line
  20. Fuel return to fuel cooler
  21. Fuel cooler
  22. Fuel return to fuel tank.

SMALL | MEDIUM | LARGE
QSC8.3 Marine Applications (Sea Water Cooled), Cummins® Common Rail Fuel System Without ECM Fuel Cooling

  1. Fuel from supply tank
  2. Fuel filter and water separator
  3. Fuel supply to ECM mounted fuel lift pump
  4. ECM plate
  5. ECM mounted fuel lift pump
  6. Fuel outlet from ECM mounted fuel lift pump
  7. Fuel gear pump
  8. Fuel from gear pump to fuel filter
  9. Primary fuel filter
  10. Fuel inlet to fuel pump actuator
  11. High-pressure fuel pump
  12. Fuel outlet from high-pressure pump
  13. High-pressure pump drain flow connection
  14. Fuel rail
  15. High-pressure injector supply lines
  16. High-pressure fuel connector
  17. Fuel injector
  18. Fuel pressure relief valve
  19. Fuel injector drain flow line
  20. Fuel return to fuel cooler
  21. Fuel cooler
  22. Fuel return to fuel tank.
Last Modified:  27-Jan-2010
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