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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 681 (Engine Mechanical - 8.1L (On-Vehicle)) >> Repair Instructions >> Crankshaft Rear Oil Seal Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of J 42849
    GM640011Courtesy of GENERAL MOTORS CORP.
  1. Make sure the crankshaft is free of grit, loose rust, and burrs. Correct as needed.
  2. Apply a very light film of oil onto the crankshaft sealing surface. DO NOT apply oil to the sealing surface of the engine block.
  3. Install the seal onto J 42849  .
  4. Position the J 42849  against the crankshaft. Thread the attaching screws into the tapped holes in the crankshaft.
  5. Tighten the screws securely with a screwdriver in order to ensure that the seal is installed squarely over the crankshaft.
  6. Rotate the center nut until the J 42849  bottoms.
  7. Remove the J 42849  .
  8. Install the flywheel. Refer to Engine Flywheel Replacement .
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