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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.4L (1 Of 5)) >> On-Vehicle Repair Instructions (Part 1) >> Oil Pump Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Crankshaft Sprocket To Oil Pump Drive Friction Washer
    GM1674306Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Ensure the proper friction washer is installed in the correct position.
  1. Select the crankshaft sprocket to oil pump drive friction washer (2).
    2. Fig 2: Crankshaft Sprocket To Oil Pump Drive Friction Washer
    GM1674296Courtesy of GENERAL MOTORS CORP.
  2. Install the crankshaft sprocket to oil pump drive friction washer.
    3. Fig 3: Identifying Oil Pump & Drive Spacer
    GM1275672Courtesy of GENERAL MOTORS CORP.
  3. Install the oil pump drive spacer (1) into the oil pump (2) so that the drive flat engages the pump rotor.
    4. Fig 4: Oil Pump
    GM1674298Courtesy of GENERAL MOTORS CORP.
  4. Install the oil pump.
    5. Fig 5: EN-48036
    GM1674299Courtesy of GENERAL MOTORS CORP.
    NOTE: The EN 48036 must be used during the installation of the oil pump. Failure to use the EN 48036 to align the oil pump to the crankshaft can lead to oil pump damage and severe engine damage.
  5. Install the EN-48036  over the crankshaft nose and up to the oil pump. See Special Tools .
    6. Fig 6: Oil Pump Bolts
    GM1674300Courtesy of GENERAL MOTORS CORP.
  6. Loosely install the oil pump bolts.
    7. Fig 7: EN-48036
    GM1660812Courtesy of GENERAL MOTORS CORP.
  7. Apply hand force to the EN-48036  against the oil pump in order to align the oil pump to the oil pump drive. See Special Tools .
    8. Fig 8: Oil Pump Mounting Bolt Tightening Sequence
    GM1674307Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  8. While keeping hand force on the EN-48036  tighten the bolts in the sequence (1, 2, 3) as shown. See Special Tools .

    Tighten: 

    1. First Pass

      Tighten the oil pump mounting bolts in sequence to 10 N.m (89 lb in).

    2. Final Pass

      Tighten the oil pump mounting bolts in sequence an additional 35 degrees using the J 45059  .

  9. Remove the EN-48036  . See Special Tools .
    10. Fig 9: Oil Pump Drive To Crankshaft Balancer Friction Washer
    GM1674308Courtesy of GENERAL MOTORS CORP.
  10. Install the oil pump drive to crankshaft balancer friction washer. The oil pump drive to crankshaft balancer friction washer has an outside diameter of 45.5 mm (1.7913 in) and an inside diameter of 35.25 mm (1.3878 in).
  11. Install the engine front cover. Refer to Engine Front Cover Replacement .
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