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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pump, Pump Screen and Deflector Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump.
  2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the oil pump bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

    Fig 1: Installing Oil Pump Bolts
    G02129250Courtesy of GENERAL MOTORS CORP.
  4. Install the crankshaft oil deflector and nuts until snug.
    Fig 2: Installing Crankshaft Oil Deflector And Nuts
    G02129251Courtesy of GENERAL MOTORS CORP.
  5. Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
  6. Install the NEW O-ring seal onto the oil pump screen.
    IMPORTANT: Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
  7. Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.
  8. Install the oil pump screen.
  9. Install the oil pump screen bolt and nuts.

    Tighten 

    1. 9.1. Tighten the bolt to 12 N.m (106 lb in).
    2. 9.2. Tighten the nuts to 25 N.m (18 lb ft).
  10. Install the engine front cover. Refer to ENGINE FRONT COVER REPLACEMENT   .
  11. Install the oil pan. Refer to OIL PAN REPLACEMENT   .
    Fig 3: Installing Oil Pump Screen Bolt And Nuts
    G02129252Courtesy of GENERAL MOTORS CORP.
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