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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1444 (Engine Mechanical - 5.3L (Lm4)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Oil Pump Assemble

Oil Pump Assemble

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Oil Pump Driven Gear
    GM65060Courtesy of GENERAL MOTORS CORP.
    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.

    2. Fig 2: View Of Oil Pump Drive Gear
    GM65058Courtesy of GENERAL MOTORS CORP.
  2. Install the drive gear into the pump housing.
    3. Fig 3: View Of Oil Pump & Cover
    GM65057Courtesy of GENERAL MOTORS CORP.
  3. Install the oil pump cover.
    4. Fig 4: View Of Oil Pump Cover Bolts
    GM65055Courtesy 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).

    5. Fig 5: View Of Oil Pump Pressure Relief Valve
    GM65076Courtesy of GENERAL MOTORS CORP.
  5. Install the regulator valve.
    6. Fig 6: View Of Oil Pump Pressure Relief Valve Spring
    GM65068Courtesy of GENERAL MOTORS CORP.
  6. Install a NEW regulator valve spring.
    7. Fig 7: View Of Oil Pump Pressure Relief Valve Plug
    GM65064Courtesy 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 smooth operation by rotating the drive gear.
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