GM Service Manual Online
For 1990-2009 cars only

Cleaning Procedure

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

  3. Dry the crankshaft balancer with compressed air.

Inspection Procedure


    Object Number: 1351905  Size: SH
  1. Inspect the exterior of the crankshaft balancer for the following:
  2. • Damage to the webs (1) between the hub and the drive belt inner pulley
    • Damage to the threaded holes (2)
    • Damage to the seating surface (3) for the crankshaft balancer bolt's washer
    • Wear or damage to the hub-to-crankshaft surface (4)
    • Wear, chunking or deteriorated rubber (5) between the drive belt inner and outer pulleys
    • Damage to the drive belt inner and/or outer pulley ribs (6)

    Object Number: 1351907  Size: SH
  3. Inspect the interior of the crankshaft balancer for the following:
  4. • Wear or damage to the hub-to-crankshaft surface (1)
    • Wear, grooves or damage to the hub sealing surface (2). A crankshaft balancer hub sealing surface with excessive scoring, grooves, rust or other damage must be replaced.
    • Bent, damage or missing crankshaft front oil seal shield (3)
    • Wear, chunking or deteriorated rubber (4) between the drive belt inner and outer pulleys
    • Damage to the drive belt inner and/or outer pulley ribs (5)
  5. Repair or replace the crankshaft balancer as necessary.