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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1019 (Engine Mechanical - 4.8L, 5.3L & 6.0L (Repair Instructions - 1 Of 3)) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Crankshaft Rear Oil Seal Replacement (5.3L Engine w/RPO HP2) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • The flywheel spacer, if applicable, must be removed prior to oil seal installation.
  • Do not lubricate the oil seal inside diameter (ID) or the crankshaft surface.
  • Do not reuse the crankshaft rear oil seal.
  1. Lubricate the outside diameter (OD) of the oil seal (1) with clean engine oil.

    DO NOT allow oil or other lubricants to contact the seal surface.

    2. Fig 1: View Of Crankshaft Rear Oil Seal
    GM490692Courtesy of GENERAL MOTORS CORP.
  2. Lubricate the rear cover oil seal bore with clean engine oil.

    DO NOT allow oil or other lubricants to contact the crankshaft surface.

  3. Install the J 41479-2A  tapered cone (2) and bolts onto the rear of the crankshaft.
  4. Tighten the bolts until snug. Do not overtighten.
  5. Install the rear oil seal onto the J 41479-2A  tapered cone (2) and push the seal to the rear cover bore.
  6. Thread the J 41479  threaded rod into the J 41479-2A  tapered cone (2) until the tool (1) contacts the oil seal.
  7. Align the oil seal to the J 41479  (1).
  8. Rotate the handle of the J 41479  (1) clockwise until the seal enters the rear cover and bottoms into the cover bore.
  9. Remove the J 41479  andJ 41479-2A  .
    10. Fig 2: View Of J 41479 & Tapered Cone
    GM1201554Courtesy of GENERAL MOTORS CORP.
  10. Install the torque converter locator bushing. Refer to Torque Converter Locator Bushing Replacement (5.3L Engine w/RPO HP2) .
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