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Oil Pump Disassemble

    Fig 1: Oil Pump Driveshaft & Oil Pump Driveshaft Retainer
    G01829002Courtesy of GENERAL MOTORS CORP.
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.

    Important  : DO NOT remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.

    2. Fig 2: Oil Pump Screen
    G01829003Courtesy of GENERAL MOTORS CORP.
  2. Remove the oil pump screen, if necessary.

    The oil pump screen has a press fit into the oil pump cover.

    3. Fig 3: Oil Pump Cover Bolts
    G01829004Courtesy of GENERAL MOTORS CORP.
  3. Remove the oil pump cover bolts.
    4. Fig 4: Oil Pump Cover
    G01829005Courtesy of GENERAL MOTORS CORP.
  4. Remove the oil pump cover.
    5. Fig 5: Oil Pump Drive Gear & The Oil Pump Driven Gear
    G01829006Courtesy of GENERAL MOTORS CORP.
  5. Remove the oil pump drive gear and the oil pump driven gear.
  6. Matchmark the gear teeth for assembly.
    CAUTION: Refer to SAFETY GLASSES CAUTION .
    CAUTION: In some models, the pressure regulator valve spring is under pressure. Remove the retaining pin carefully in order to avoid bodily injury.
    7. Fig 6: Oil Pump Pressure Relief Valve
    G01829007Courtesy of GENERAL MOTORS CORP.
  7. Remove the following items:
  1. The oil pump pressure relief valve spring straight pin.
  2. The oil pump pressure relief spring.
    CAUTION: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.
  3. The oil pump pressure relief valve. If the valve is stuck, soak the pump housing in cleaning solvent.
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