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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Crankshaft Front Oil Seal Installation >> Tools Required

Tools Required

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J 41478  Crankshaft Front Oil Seal Installer. See Special Tools .

    Fig 1: View Of Crankshaft Front Oil Seal
    GM1272843Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Do not lubricate the oil seal sealing surface.
    • Do not use the crankshaft front oil seal again.
  1. Lubricate the outer edge of the oil seal (140) with clean engine oil.
  2. Lubricate the front cover oil seal bore with clean engine oil.
    3. Fig 2: Installing Crankshaft Front Oil Seal Using J 41478
    GM63177Courtesy of GENERAL MOTORS CORP.
  3. Install the crankshaft front oil seal onto the J 41478  guide. See Special Tools .
  4. Install the J 41478  threaded rod, with nut, washer, guide, and oil seal, into the end of the crankshaft. See Special Tools .
  5. Use the J 41478  in order to install the oil seal into the cover bore. See Special Tools .
    1. Use a wrench and hold the hex on the installer bolt.
    2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore.
    3. Remove the tool.
    4. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
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