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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pump, Screen, and Crankshaft Oil Deflector Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Oil Pump & Bolt
    GM64281Courtesy of GENERAL MOTORS CORP.
  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: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  3. Install the oil pump bolts.

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

    4. Fig 2: View Of Crankshaft Oil Deflector & Nuts
    GM683798Courtesy of GENERAL MOTORS CORP.
  4. Install the crankshaft oil deflector and nuts until snug.
    5. Fig 3: View Of Oil Pump Screen & O-Ring Seal
    GM647800Courtesy 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. Tighten the oil pump screen bolt to 12 N.m (106 lb in).
    2. Tighten the crankshaft oil deflector/oil pump screen 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 .
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