GM Service Manual Online
For 1990-2009 cars only

    Object Number: 334038  Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

  1. Clean the crankshaft balancer in cleaning solvent.
  2. Dry the crankshaft balancer with compressed air.
  3. Inspect the crankshaft balancer for the following:
  4. • Worn or damaged bolt hole threads (1)
    • Worn, chunking, or deteriorated rubber (2) between the hub and outer ring
    • Loose or improperly installed balance weights (3)
    • A properly installed balance weight should be installed until flush or below flush with the face of the crankshaft balancer.
    • Worn or damaged keyway (4)

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