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Home › Jeep › 2021 › Grand Cherokee Trackhawk › Repair and Diagnosis › Engine Performance › Fuel Delivery › Fuel System › Fuel Delivery, Diesel › Pump, Fuel Injection, High Pressure › Removal

Pump, Fuel Injection, High Pressure: Removal

WARNING:

High-pressure lines deliver diesel fuel under extreme pressure from the injection pump to the fuel injectors. This may be as high as 2000 bar (29, 008 psi). Use extreme caution when inspecting for high-pressure fuel leaks. Fuel under this amount of pressure can penetrate skin causing personal injury or death. Inspect for high-pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing fuel system.

  1. Disconnect and isolate the negative battery cable.
    GC0146436Courtesy of CHRYSLER GROUP, LLC
  2. Remove the engine cover (1).
    GC0169759Courtesy of CHRYSLER GROUP, LLC
  3. Remove the oil vapor pressure sensor (1). Refer to SENSOR, OIL VAPOR PRESSURE, REMOVAL .
  4. Disconnect the crankcase breather hose (4).
    GC0146774Courtesy of CHRYSLER GROUP, LLC
  5. Remove the bolts (1) and the oil breather/camshaft seal housing (2).
  6. Remove and discard gasket (3).
    GC0146840Courtesy of CHRYSLER GROUP, LLC
  7. Using Oil Separator Remover/Installer Tool (2) (special tool #VM.10344, Tool, Oil Separator Remover/Installer), remove the oil separator (1) from the left intake camshaft.
    GC0173446Courtesy of CHRYSLER GROUP, LLC
  8. Rotate the engine and observe the location of the small dimple (1) and the hole (2) on the camshaft gear. If you see these marks facing the intake manifold the engine is 180° off time. You should not see the small dimple (1) and the hole (2). 
  9. Lock the engine at 60° ATDC. Refer to the appropriate service information .
    GC0146780Courtesy of CHRYSLER GROUP, LLC
  10. Remove the bolts (2) and the fuel injection pump blocker shield (1).
    GC0146830Courtesy of CHRYSLER GROUP, LLC
  11. Disconnect the fuel quantity solenoid wire harness connector (3).
    GC0146739Courtesy of CHRYSLER GROUP, LLC
  12. Disconnect the low pressure supply (2) and return (1) lines from fuel injection pump. Refer to QUICK-CONNECT FITTINGS  .
    GC0146834Courtesy of CHRYSLER GROUP, LLC
  13. Remove the fastener t (1) securing the right high pressure fuel tube to cylinder head cover.
  14. Remove the fastener (2) securing the left high pressure fuel tube to EGR air flow control valve.
    GC0158181Courtesy of CHRYSLER GROUP, LLC
  15. Remove the EGR tube. Refer to TUBE, EXHAUST GAS RECIRCULATION (EGR), REMOVAL .
  16. Remove the right side fuel tubes (2) from fuel injector No. 1 and 2.
    GC0146844Courtesy of CHRYSLER GROUP, LLC
  17. Remove the bolts (2) and pull up on the engine wire harness assembly (1) to release retainers from the intake manifold.
    GC0146740Courtesy of CHRYSLER GROUP, LLC
  18. Remove the high pressure fuel tube support bracket nut (1).
  19. Remove the union nuts (5, 8) and the left high pressure fuel tube (7) and discard fuel tube.
    GC0146833Courtesy of CHRYSLER GROUP, LLC
  20. Remove the three bolts (1) and the high pressure pump (2).
    GC0146835Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The high pressure pump needs to be timed using a commercially available degree wheel.

    NOTE:

    The use of (special tool #1023, Puller) or a commercially available gear puller is required to remove the fuel injection pump gear (2).

  21. If necessary, remove the nut (1) and gear (2) from the high pressure pump (3).
    GC0146830Courtesy of CHRYSLER GROUP, LLC
  22. If necessary, remove the fuel quantity solenoid (1). Refer to SOLENOID, FUEL QUANTITY, REMOVAL .
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