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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1020 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankshaft Front Oil Seal Replacement >> Installation Procedure

Installation 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. Clean the front crankshaft seal bore and the crankshaft.
  2. Lubricate the crankshaft sealing surface with clean engine oil.
  3. Place the crankshaft front oil seal onto the crankshaft.
  4. Install J 44645  to the crankshaft.
  5. Press the crankshaft front oil seal onto the crankshaft using J 44645  until the tool bottoms out.
  6. Remove J 44645  .
    7. Fig 1: Pressing Crankshaft Front Oil Seal On Using J 44645
    GM663819Courtesy of GENERAL MOTORS CORP.
  7. Measure the distance between the end of the crankshaft and the oil seal.
    8. Fig 2: Measuring Distance Between Crankshaft & Oil Seal
    GM663820Courtesy of GENERAL MOTORS CORP.
  8. The service measurement is 43.45-44.05 mm (1.7106-1.7342 in).
  9. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
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