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Centinel System – Repair Manual – 100-002   Engine Diagrams

Engine Views

 TOC

The following illustrations show the location of the major external engine components, filters, and other service and maintenance points. Some external components will be at different locations for different engine models.

Automotive with CM870

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ISX Automotive with CM870 – Left Side View

  1. ECM cooling plate
  2. ECM
  3. EGR mixer
  4. Intake manifold air temperature sensor
  5. Fuel pump
  6. Intake manifold pressure sensor
  7. EGR differential pressure sensor mounting location
  8. Fuel lift pump
  9. EGR connection tube
  10. Recirculated exhaust gas temperature sensor (
    not shown)
  11. Starter
  12. Fuel filter
  13. Lubricating oil dipstick
  14. Centinel™ oil control valve
  15. Turbocharger control shutoff valve filter
  16. Engine speed sensor
  17. Air compressor
  18. Fan hub
  19. Crankcase breather tube.

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ISX Automotive with CM870 – Right Side View

  1. Variable geometry turbocharger
  2. Variable geometry actuator
  3. Turbocharger speed sensor (
    not shown)
  4. EGR valve
  5. Exhaust gas pressure sensor mounting location
  6. Thermostat housing
  7. Turbocharger control valve
  8. Refrigerant compressor
  9. Alternator
  10. Turbocharger oil supply
  11. Water pump
  12. Coolant filter
  13. Turbocharger oil drain
  14. Optional dipstick locations
  15. Lubricating oil drain
  16. Combination full-flow/bypass lubricating oil filter
  17. Flywheel housing
  18. Lubricating oil cooler assembly
  19. EGR cooler
  20. Exhaust manifold.

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ISX Automotive with CM870 – Front View

  1. Refrigerant drive belt
  2. EGR mixer
  3. Crankcase breather tube
  4. Oil fill
  5. Water pump drive belt
  6. Vibration damper
  7. Water pump
  8. Belt tensioner, water pump
  9. Alternator
  10. Variable geometry turbocharger
  11. Belt tensioner, refrigerant compressor
  12. Refrigerant compressor.

Automotive With CM871

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ISX Automotive with CM871 – Front View

  1. Crankcase breather pressure sensor
  2. Intake manifold connection
  3. Oil fill tube
  4. Water pump drive belt
  5. Oil pan
  6. Vibration damper
  7. Dual outlet water pump
  8. Belt tensioner, water pump
  9. Alternator
  10. Variable geometry turbocharger
  11. Belt tensioner, refrigerant compressor
  12. Refrigerant compressor
  13. Refrigerant compressor drive belt.

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ISX Automotive with CM871 – Left Side View

  1. ECM
  2. Air intake connection
  3. Front EGR connection tube
  4. EGR differential pressure sensor
  5. EGR differential pressure sensor tubes
  6. Fuel pump
  7. EGR valve mounting bracket
  8. EGR valve
  9. Starter
  10. Fuel filter
  11. Lubricating oil dipstick
  12. Crankcase breather vent tube
  13. Air compressor
  14. Lubricating oil fill tube
  15. Open crankcase ventilation filter housing
  16. Fan hub.

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ISX Automotive with CM871 — Rear View

  1. Aftertreatment Injector fuel supply line
  2. Aftertreatment injector coolant supply line
  3. Aftertreatment injector adapter tube
  4. Aftertreatment injector assembly
  5. Aftertreatment injector coolant return line
  6. Flywheel
  7. Rear EGR connection tube.

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ISX Automotive with CM871 – Right Side View

  1. Variable geometry turbocharger
  2. Turbocharger speed sensor
  3. Variable geometry actuator
  4. EGR cooler coolant inlet tube
  5. Dual outlet water pump
  6. Coolant filter
  7. Turbocharger oil drain tube
  8. Lubricating oil filter
  9. Lubricating oil drain plug
  10. Flywheel housing
  11. EGR cooler coolant return tube
  12. Lubricating oil cooler
  13. EGR cooler
  14. Exhaust manifold.

Industrial CM570 and Power Generation without CM570

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QSX15 Industrial with CM570 – Front View

  1. Accessory drive belt
  2. Water pump/fan drive belt
  3. Lubricating oil fill
  4. Water pump/fan drive belt tensioner
  5. Accessory drive belt tensioner.

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QSX15 Industrial with CM570 – Left Side View

  1. Gear housing
  2. ECM
  3. Air intake
  4. Engine dataplate
  5. Fuel pump
  6. Starter
  7. Fuel filter
  8. Lubricating oil dipstick
  9. Crankshaft timing pin port
  10. Vibration dampers
  11. Barring device/air compressor
  12. Fan hub.

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QSX15 Industrial with CM570 – Right Side View

  1. Exhaust manifold
  2. Turbocharger
  3. Oil inlet to turbocharger
  4. Wastegate actuator
  5. Thermostat housing vent
  6. Thermostat housing
  7. Engine coolant outlet (to radiator)
  8. Freon compressor
  9. Coolant temperature sensor
  10. Alternator
  11. Water pump
  12. Coolant filter
  13. Lubricating oil drain
  14. Turbocharger oil drain
  15. Combination full-flow/bypass lubricating oil filter
  16. Lubricating oil cooler assembly
  17. Flywheel housing
  18. Engine serial number.

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QSX15 Power Generation without CM570 – Front View

  1. Accessory drive belt
  2. Water pump/fan drive belt
  3. Oil fill/crankcase breather
  4. Water pump/fan drive belt tensioner
  5. Accessory drive belt tensioner.

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QSX15 Power Generation without CM570 – Left Side View

  1. Gear cover
  2. Engine dataplate
  3. Air intake
  4. Fuel pump
  5. Fuel filter
  6. Starter
  7. Lubricating oil pan
  8. Lubricating oil drains
  9. Crankshaft timing pin port
  10. Lubricating oil dipstick
  11. Vibration dampers
  12. Lubricating oil fill/barring device
  13. Fan hub.

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QSX15 Power Generation without CM570 – Right Side View

  1. Exhaust manifold
  2. Lubricating oil Inlet to turbocharger
  3. Turbocharger
  4. Thermostat housing vent
  5. Thermostat housing
  6. Engine coolant outlet (to radiator)
  7. Coolant temperature sensor
  8. Water pump
  9. Coolant filter
  10. Lubricating oil drains
  11. Combination full-flow/bypass lubricating oil filter
  12. Lubricating oil cooler assembly
  13. Flywheel housing
  14. Engine serial number
  15. Turbocharger lubricating oil drain.

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Fuel System – Left Side View

  1. Intake manifold pressure/temperature sensor
  2. Fuel outlet
  3. Fuel inlet
  4. Fuel shutoff valve
  5. Oil pressure/temperature sensor
  6. ECM/engine harness port (OEM)
  7. ECM
  8. ECM/engine harness port (actuator)
  9. ECM/sensor port
  10. Cooling plate (behind ECM).

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Fuel System – Left Side View (continued)

  1. Camshaft position sensor
  2. Crankshaft position sensor
  3. Ambient air pressure sensor
  4. Water-in-Fuel sensor
  5. Fuel pressure sensor
  6. Front and rear rail sensors*
  7. Timing actuators
  8. Fueling actuators.

* Eliminated on most engines

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Fuel Delivery Housing – Front View

  1. Priming bypass valve (internal)
  2. 320 psi pressure regulator
  3. 36-micron filter screen
  4. Fuel inlet
  5. Quick disconnect pressure tap – suction side
  6. Water-In-Fuel sensor
  7. 250 psi pressure regulator
  8. Fuel shutoff valve
  9. Quick disconnect pressure tap – pressure side
  10. Fuel pressure sensor
  11. Front rail actuator
  12. Front timing actuator
  13. Rear timing actuator
  14. Rear rail actuator.

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QSX15 with CM570 Fuel Delivery Housing – Rear View

  1. Fuel pump assembly
  2. Front rail pressure sensor*
  3. Fuel filter
  4. Rear rail pressure sensor*.

* Eliminated on most engines.
Last Modified:  08-Feb-2008
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