GM Service Manual Online
For 1990-2009 cars only

Cleaning Procedure

  1. Clean the crankshaft balancer in solvent that is compatible with the rubber (3).
  2. Caution: Refer to Safety Glasses Caution in the Preface section.

  3. Dry the crankshaft balancer with compressed air.

Inspection Procedure


    Object Number: 1039396  Size: SH
  1. Inspect the crankshaft balancer for the following:
  2. • Worn or damaged hub-to-crankshaft surface (1)
    • Worn, grooved, or damaged hub seal surface (2). A crankshaft balancer hub seal surface with excessive scoring, grooves, rust, or other damage must be replaced.
    • Bent, damaged or missing crankshaft front oil seal shield (3)
    • Worn, chunking, or deteriorated rubber between the hub and pulley (4)
    • Damaged drive belt ribs (5)
  3. Repair or replace the crankshaft balancer as necessary.