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Oil Pump Assemble

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IMPORTANT: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.
  1. Install the driven gear into the pump housing.

    Install the driven gear with the orientation mark facing the pump cover.

    Fig 1: Oil Pump Driven Gear
    G01674805Courtesy of GENERAL MOTORS CORP.
  2. Install the drive gear into the pump housing.
    Fig 2: Oil Pump Drive Gear
    G01674806Courtesy of GENERAL MOTORS CORP.
  3. Install the oil pump cover.
    Fig 3: Oil Pump Cover
    G01674807Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Install the pump cover bolts.

    Tighten 

    Tighten the oil pump cover bolts to 12 N.m (106 lb in).

    Fig 4: Oil Pump Cover & Bolts
    G01674808Courtesy of GENERAL MOTORS CORP.
  5. Install the regulator valve.
    Fig 5: Oil Pump Pressure Relief Valve
    G01674809Courtesy of GENERAL MOTORS CORP.
  6. Install a NEW regulator valve spring.
    Fig 6: Oil Pump Pressure Relief Valve Spring
    G01674810Courtesy of GENERAL MOTORS CORP.
  7. Install the pressure relief valve plug.

    Tighten 

    Tighten the pressure relief valve plug to 12 N.m (106 lb in).

  8. Inspect the oil pump for smoothness of operation by rotating the drive gear.
    Fig 7: Oil Pump Pressure Relief Valve Plug
    G01674811Courtesy of GENERAL MOTORS CORP.
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