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Cummins Marine QSC 8.3 Engine Diagram

  1. Heat exchanger
  2. Engine coolant to heat exchanger
  3. Coolant fill cap
  4. Expansion tank
  5. Intake air inlet from aftercooler
  6. Timing case cover
  7. Sea water pump discharge
  8. Engine mounting bracket
  9. Oil pan drain plug
  10. Oil pan
  11. Belt and pulley guard

  1. Expansion tank
  2. Intake manifold temperature sensor (behind aftercooler air outlet)
  3. Intake manifold pressure sensor (behind aftercooler air outlet
  4. Crankcase breather
  5. Aftercooler air outlet
  6. Air cleaner or filter
  7. Aftercooler sea water outlet
  8. Aftercooler sea water inlet
  9. Aftercooler housing
  10. Zinc anodes
  11. Fuel cooler
  12. Fuel outlet to fuel tank
  13. Marine gear oil cooler connection (behind gear oil cooler x 2)
  14. Flywheel housing
  15. Zinc anode
  16. Crankshaft speed sensor
  17. Marine gear oil cooler
  18. Oil pressure sensor (behind marine gear oil cooler)
  19. Fuel inlet from fuel tank
  20. Electronic control module (ECM)
  21. Lubricating oil dipstick
  22. Fuel lift pump (behind ECM)
  23. Sea water inlet
  24. Sea water pump
  25. SIM module (mounted on ECM bracket)
  26. Camshaft position sensor
  27. Fuel filter
  28. Fuel rail pressure sensor

  1. Air cleaner or filter
  2. Closed crankcase ventilation canister/filter
  3. Intake air restriction indicator
  4. Turbocharger compressor side
  5. Turbocharger oil supply
  6. Turbocharger exhaust side
  7. Heat exchanger sea water outlet
  8. Sea water cooled exhaust elbow
  9. Sea water discharge
  10. Heat exchanger sea water inlet
  11. Turbocharger oil drain tube
  12. Marine gear oil cooler connection
  13. Marine gear oil cooler connection
  14. Aftercooler air inlet
  15. Fuel cooler inlet from engine
  16. Aftercooler drain valve
  17. Aftercooler sea water inlet
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  1. Sea water outlet from heat exchanger
  2. Vacuum regulator for air filter
  3. Coolant level sensor
  4. Expansion tank
  5. Coolant fill cap
  6. Heat exchanger
  7. Coolant outlet from heat exchanger
  8. Coolant inlet to heat exchanger
  9. Zinc anode
  10. Coolant temperature sensor
  11. Alternator
  12. Lubricating oil cooler
  13. Lubricating oil filter
  14. Starter motor
  15. Turbocharger oil drain
  16. Flywheel housing
  17. Zinc anode
  18. Sea water inlet to aftercooler
  19. Sea water inlet to heat exchanger
  20. Exhaust elbow/sea water discharge
  21. Turbocharger

  1. Heat exchanger
  2. Exhaust manifold
  3. Exhaust outlet
  4. Turbocharger
  5. Air inlet restriction indicator
  6. Air filter
  7. Crankcase breather
  8. Aftercooler
  9. Electronic control module (ECM)
  10. High pressure injector supply line
  11. Fuel pump
  12. Front engine mount
  13. Injector
  14. Expansion tank coolant fill cap
  15. Oil fill cap