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Oil Pump Disassemble

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IMPORTANT: The internal parts of the oil pump assembly are not serviced separately, excluding the spring. If the oil pump components are worn or damaged, replace the oil pump as an assembly.
  1. Remove the oil pump cover bolts.
    Fig 1: Oil Pump Cover & Bolts
    G01674792Courtesy of GENERAL MOTORS CORP.
  2. Remove the oil pump cover.
    Fig 2: Oil Pump Cover
    G01674793Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Mark or identify the gears for assembly. Refer to Separating Parts .
  3. Remove the drive gear.
    Fig 3: Oil Pump Drive Gear
    G01674794Courtesy of GENERAL MOTORS CORP.
  4. Remove the driven gear.
    Fig 4: Oil Pump Driven Gear
    G01674795Courtesy of GENERAL MOTORS CORP.
  5. Remove the pressure relief valve plug.
    Fig 5: Oil Pump Pressure Relief Valve Plug
    G01674796Courtesy of GENERAL MOTORS CORP.
  6. Remove the pressure relief valve spring.
    Fig 6: Oil Pump Pressure Relief Valve Spring
    G01674797Courtesy of GENERAL MOTORS CORP.
  7. Remove the pressure relief valve.
  8. Inspect the oil pump components. Refer to Oil Pump Cleaning and Inspection .
    Fig 7: Oil Pump Pressure Relief Valve
    G01674798Courtesy of GENERAL MOTORS CORP.
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