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Crankshaft Rear Oil Seal Installation: Installation

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Crankshaft Rear Oil Seal Installation Tools (EN-48108)
    GM1718322Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not remove protective nylon sleeve prior to installation. The rear main oil seal installation tool is designed to install the rear main seal with the protective sleeve in place. Never apply or use any oil, lubricants or sealing compounds on the crankshaft rear main oil seal.
    CAUTION: Clean the crankshaft sealing surface with a clean, lint-free towel. Inspect lead-in edge of crankshaft for burrs/sharp edges that could damage the rear main oil seal. Remove burrs/sharp edges with crocus cloth before proceeding.
  1. The EN-48108:  installer tool has a unique design to allow the technician to easily install the rear main seal squarely to the correct depth and direction. Before proceeding with installation, review the above illustration to become familiar with the following components:
    • Mandrel (1)
    • Drive Drum (2)
    • Drive Nut (3)
    • Washer (4)
    • Bearing (5)
    2. Fig 2: Locating Mandrel Dowel Pin
    GM1718335Courtesy of GENERAL MOTORS CORP.
  2. Align the mandrel dowel pin to the dowel pin hole in the crankshaft.
    3. Fig 3: Identifying Mandrel Screws
    GM1718337Courtesy of GENERAL MOTORS CORP.
  3. Using a large flat blade screwdriver, tighten the two mandrel screws to the crankshaft, ensuring the mandrel is snug to the crankshaft hub.
    4. Fig 4: View Of Rear Main Seal Mandrel
    GM1718338Courtesy of GENERAL MOTORS CORP.
    NOTE: The seal will only fit one way onto the mandrel, and if properly installed, will center on a step that protrudes from the center of the mandrel.
  4. Install the rear main seal (1), with the protective nylon sleeve attached (2), onto the mandrel.
    5. Fig 5: Identifying Outer Drive Drum
    GM1718341Courtesy of GENERAL MOTORS CORP.
  5. Install the outer drive drum onto the mandrel.
  6. Install the bearing, washer, and the drive nut onto the threaded shaft.
    7. Fig 6: Identifying Drive Nut
    GM1718345Courtesy of GENERAL MOTORS CORP.
  7. Using a wrench, turn the drive nut on the mandrel, which will push the seal into the engine block bore.
  8. Turn the wrench until the drive drum is snug and flush against the engine block.
  9. Loosen and remove the drive nut, washer, bearing and drive drum. Discard the nylon plastic seal protector.
  10. Verify that the seal has seated properly.
    11. Fig 7: Identifying Mandrel Screws
    GM1718337Courtesy of GENERAL MOTORS CORP.
  11. Use a flat blade screwdriver to remove the two attachment screws from the mandrel and remove the mandrel from the crankshaft hub.
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