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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Engine Mechanical - 4.3L) >> Repair Instructions - Off Vehicle >> Crankshaft Balancer Cleaning and Inspection

Crankshaft Balancer Cleaning and Inspection

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Crankshaft Balancer Cleaning & Inspection Areas
    GM334387Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to SAFETY GLASSES CAUTION .
  1. Clean the crankshaft balancer in cleaning solvent.
  2. Dry the crankshaft balancer with compressed air.
  3. Inspect the crankshaft balancer for the following:
    • Loose or improperly installed crankshaft balancer front groove pin (1)

      A properly installed front groove pin should be installed until flush or below flush with the face of the crankshaft balancer.

    • IMPORTANT: A crankshaft front oil sealing surface with excessive scoring, grooves, rust, or other damage must be replaced.
    • Worn, grooved, or damaged crankshaft front oil sealing surface (2)

      Minor imperfections on the crankshaft balancer crankshaft front oil seal surface may be removed with a polishing compound or fine grade emery cloth.

    • Worn, chunking, or deteriorated rubber (3) between the hub and the outer ring
    • Worn or damaged keyway (4)
    • Worn or damaged bolt hole threads (5)