Crankshaft Balancer Cleaning and Inspection

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Refer to SAFETY GLASSES CAUTION .

Clean the crankshaft balancer in cleaning solvent.
Dry the crankshaft balancer with compressed air.
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.
  
  Fig 1: Components Of Crankshaft Bearing To Be Inspected
  Courtesy of GENERAL MOTORS CORP.
- 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)