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Oil Pump, Screen and Crankshaft Oil Deflector Installation

    Fig 1: View Of Oil Pump & Bolts
    GM1658170Courtesy of GENERAL MOTORS CORP.
    NOTE:

    Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.

  1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump (413).
  2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
    3. CAUTION:

    Refer to Fastener Caution .

  3. Install the oil pump bolts (411) and tighten to 25 N.m (18 lb ft).
    4. Fig 2: Crankshaft Oil Deflector & Nuts
    GM1552545Courtesy of GENERAL MOTORS CORP.
  4. Install the crankshaft oil deflector (425).
    5. Fig 3: Oil Pump Screen Bolt, Nut & O-Ring Seal
    GM1520947Courtesy of GENERAL MOTORS CORP.
  5. Lubricate a NEW oil pump screen O-ring seal (406) with clean engine oil.
  6. Install the NEW O-ring seal onto the oil pump screen.
    7. NOTE:
    • 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.
    • Align the oil pump screen mounting brackets with the correct crankshaft bearing cap bolt/studs.
  7. Install the oil pump screen (407).
  8. Install the oil pump screen bolt (405) and the deflector nut (404).
    1. Tighten the oil pump screen bolt to 12 N.m (106 lb in).
    2. Tighten the crankshaft oil deflector nut to 25 N.m (18 lb ft).
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