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Home >> Chevrolet >> 2012 >> Suburban C2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1902 (Engine Mechanical - Hybrid (LZ1) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Crankshaft Front Oil Seal Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Do not lubricate the oil seal sealing surface.
  • Do not reuse the crankshaft front oil seal.
    Fig 1: View Of Outer Edge Of The Oil Seal
    GM1658279Courtesy of GENERAL MOTORS COMPANY
  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: View Of Front Oil Seal & Special Tool
    GM1658280Courtesy of GENERAL MOTORS COMPANY
  3. Install the crankshaft front oil seal (140) onto the J 41478  crankshaft front oil seal installer guide.
  4. Install the J 41478  crankshaft front oil seal installer threaded rod (with nut, washer, guide, and oil seal) into the end of the crankshaft.
  5. Use the J 41478  crankshaft front oil seal installer in order to install the oil seal into the cover bore.
    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 J 41478  crankshaft front oil seal installer.
    4. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
  6. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
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