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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> 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 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the flywheel. Refer to Engine Flywheel Replacement .
  2. Install the guide pins from J 43320  into the crankshaft.
    3. Fig 1: View Of Guide Pins In Crankshaft
    GM655276Courtesy of GENERAL MOTORS CORP.
  3. Install the J 43320  over the guide pins.
  4. Using a suitable drill, insert eight of the self-drilling sheet metal screws into the rear crankshaft seal, using a criss-cross pattern. The self-tapping screws are included with the J 43320  .
    5. Fig 2: J 43320 Self-Drilling Sheet Metal Screws Installation Sequence
    GM655278Courtesy of GENERAL MOTORS CORP.
  5. Thread the center bolt of J 43320  into the crankshaft to remove the seal.
    6. Fig 3: View Of J 43320 & Center Bolt
    GM655279Courtesy of GENERAL MOTORS CORP.
  6. Remove the guide pins from the crankshaft.
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