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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (2 Of 4) >> On-Vehicle Repair Instructions >> Crankshaft Rear Oil Seal Replacement (5.3L Engine w/RPO HP2) >> Installation Procedure

Installation Procedure

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.

    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. Fig 2: View Of J 41479 & Tapered Cone
    GM1201554Courtesy of GENERAL MOTORS CORP.
  3. Install the J 41479-2A  tapered cone (2) and bolts onto the rear of the crankshaft. See Special Tools .
  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. See Special Tools .
  6. Thread the J 41479  threaded rod into the J 41479-2A  tapered cone (2) until the tool (1) contacts the oil seal. See Special Tools .
  7. Align the oil seal to the J 41479  (1). See Special Tools .
  8. Rotate the handle of the J 41479  (1) clockwise until the seal enters the rear cover and bottoms into the cover bore. See Special Tools .
  9. Remove the J 41479  and. See Special Tools .J 41479-2A  . See Special Tools .
  10. Install the torque converter locator bushing. Refer to Torque Converter Locator Bushing Replacement (5.3L Engine w/RPO HP2) .
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