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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Engine Mechanical - 3.8L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankshaft Rear Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine flywheel. Refer to Engine Flywheel Replacement .
    2. Fig 1: View Of Crankshaft Rear Oil Seal
    GM406046Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Make sure not to damage the crankshaft outside diameter surface or chamfer with any tool.
  2. Remove the crankshaft rear oil seal. Insert a flat-bladed tool through the dust lip at an angle. Pry out the crankshaft rear oil seal by moving the handle of the tool towards the end of the crankshaft. Repeat as necessary around the crankshaft rear oil seal.
    3. Fig 2: Crankshaft Rear Oil Seal
    GM97865Courtesy of GENERAL MOTORS CORP.
  3. Inspect the inside diameter of the bore. Correct or replace the crankshaft rear oil seal housing as required.
  4. Inspect the crankshaft for nicks or burrs on the surface that contacts the crankshaft rear oil seal.
  5. Repair or replace the crankshaft as required.
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