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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 271 (Engine Mechanical - 4.8L, 5.3L, 6.0L Or 6.2L (4 Of 5)) >> Off-Vehicle Repair Instructions (2 Of 3) >> Crankshaft Rear Oil Seal Installation >> Procedure

Crankshaft Rear Oil Seal Installation: Procedure

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    Fig 1: Identifying Oil Seal
    GM1699207Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: For proper orientation, note the installation direction of the oil seal. The oil seal is a reverse-lip design. The part number is applied to the outside face of the seal, as shown.
  1. Inspect the seal and identify the part number markings for proper orientation.
    2. Fig 2: View Of J 41479 Cone & Bolts
    GM63200Courtesy of GENERAL MOTORS CORP.
  2. Install the J 41479  or the J 41479-2A  cone (2) and bolts onto the rear of the crankshaft. The J 41479-2A  may be required for manual transmission or 5.3L LS4 applications.
  3. Tighten the bolts until snug. Do not overtighten.
  4. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
  5. Thread the J 41479  threaded rod into the tapered cone until the tool (1) contacts the oil seal. See Special Tools .
  6. Align the oil seal onto the tool (1).
  7. Rotate the handle of the tool (1) clockwise until the seal enters the rear housing and bottoms into the seal bore.
  8. Remove the tool.
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