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Oil Pump Disassemble

WARNING: This page is about a different car, the 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil pump driveshaft and oil pump driveshaft retainer.
    Fig 1: Oil Pump Driveshaft And Retainer
    G01763857Courtesy of GENERAL MOTORS CORP.
    NOTE: DO NOT remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.
  2. Remove the oil pump screen, if necessary. The oil pump screen has a press fit into the oil pump cover.
    Fig 2: Oil Pump Screen
    G01763858Courtesy of GENERAL MOTORS CORP.
  3. Remove the oil pump cover bolts.
    Fig 3: Oil Pump Cover Bolts
    G01763859Courtesy of GENERAL MOTORS CORP.
  4. Remove the oil pump cover.
    Fig 4: Oil Pump Cover
    G01763860Courtesy of GENERAL MOTORS CORP.
  5. Remove the oil pump drive gear and the oil pump driven gear.
  6. Matchmark the gear teeth for assembly.
    Fig 5: Oil Pump Drive Gear
    G01763861Courtesy of GENERAL MOTORS CORP.
    WARNING: In some models, the pressure regulator valve spring is under pressure. Remove the retaining pin carefully in order to avoid bodily injury.
  7. Remove the following items:
    1. 7.1. The oil pump pressure relief valve spring straight pin.
    2. 7.2. The oil pump pressure relief spring.
    3. 7.3. The oil pump pressure relief valve. If the valve is stuck, soak the pump housing in cleaning solvent.
    Fig 6: Oil Pump Pressure Relief Valve And Components
    G01763862Courtesy of GENERAL MOTORS CORP.
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