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Home >> Pontiac >> 2008 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 3.8L) >> Repair Instructions - On Vehicle >> Crankshaft Rear Oil Seal and Housing Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Do not apply or use any oil lubrication on the crankshaft rear oil seal, or the seal installer. Do not touch the sealing lip of the oil seal once the protective sleeve is removed. Doing so will damage/deform the seal.
NOTE: Clean the crankshaft sealing surface with a clean, lint free towel. Inspect lead-in edge of crankshaft for burrs/sharp edges that could damage the rear main oil seal. Remove burrs/sharp edges with crocus cloth before proceeding.
    Fig 1: Installing Crankshaft Rear Oil Seal
    GM1437955Courtesy of GENERAL MOTORS CORP.
  1. Clean and inspect the crankshaft rear oil seal housing making sure it is free of any foreign material.
  2. With all bolts removed from the housing, place it face up on a flat clean surface.
  3. Carefully remove the protection sleeve from the NEW rear oil seal.
  4. Install the seal onto EN-47623  by placing the seal on an angle and using a twisting motion until it is fully seated. See Special Tools .
  5. Place EN-47623  along with J 8092  onto the housing as shown and apply a constant downward force until the seal is fully seated. See Special Tools .
    6. Fig 2: View Of Crankshaft Sealing Surface
    GM1651043Courtesy of GENERAL MOTORS CORP.
  6. Clean the crankshaft sealing surface with a clean, lint free towel. Inspect the crankshaft sealing surface and leading edge of the crankshaft for burrs/sharp edges that could damage the rear main oil seal. Remove any burrs or sharp edges with crocus cloth prior to proceeding.
    7. Fig 3: Crankshaft Rear Oil Seal & Housing (Second Design)
    GM1646929Courtesy of GENERAL MOTORS CORP.
    NOTE: Do not use a sealant or adhesive when installing this component. Use of a sealant or adhesive can cause improper sealing. A component that is not sealed properly can leak leading to extensive engine damage.
    IMPORTANT: Always install a NEW crankshaft rear oil seal housing gasket. This gasket may be installed backward. Install the gasket ensuring that all oil passage openings and gasket openings are in alignment.
  7. Install a NEW crankshaft rear oil seal housing gasket and the housing onto the engine.
    8. IMPORTANT: The plastic inserts found in the rear oil seal housing retaining bolts are used to aid production assembly only. The inserts are not required for service.
  8. Install the crankshaft rear oil seal housing bolts finger tight.
    9. Fig 4: Measuring Cylinder Block Oil Pan Flange & Rear Oil Seal Housing Flange
    GM406048Courtesy of GENERAL MOTORS CORP.
  9. Place a straight edge on the engine block oil pan flange and the crankshaft rear oil seal housing flange. Use a feeler gage to ensure there is no more than 0.10 mm (0.004 in) step on each side. If necessary, gently rotate the crankshaft rear oil seal housing to make the step equal on each side.
    10. NOTE: Refer to Fastener Notice .
  10. Tighten the crankshaft rear oil seal housing bolts.

    Tighten:  Tighten the bolts to 15 N.m (11 lb ft) plus an additional 50 degrees using J 45059  .

  11. Recheck the step height on each side to ensure the crankshaft rear oil seal housing did not move. If the step height is beyond specification, reinstall the crankshaft rear oil seal housing and measure the step again. Replace the crankshaft rear oil seal housing if the clearance is still beyond specification.
  12. Install the oil pan. Refer to Oil Pan Replacement .
  13. Install the engine flywheel. Refer to Engine Flywheel Replacement .
  14. Fill the cooling system. Refer to Cooling System Draining and Filling (L26 GE 47716 Fill) or Cooling System Draining and Filling (L26 Static Fill) .
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