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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Crankshaft Balancer Cleaning and Inspection

Crankshaft Balancer Cleaning and Inspection

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the crankshaft balancer in solvent.
  2. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the crankshaft balancer with compressed air.
  4. Inspect the crankshaft balancer for the following:
    • Damaged belt grooves (3)
    • Debris in the belt grooves (3)
    • Worn, grooved, or damaged hub seal surface (1)
      • Minor imperfections on the hub seal surface may be removed with a polishing compound or fine grade of emery cloth.
      • A crankshaft balancer hub seal surface with excessive scoring, grooves, rust or other damage must be replaced.
    • Worn, chunking or deteriorated rubber between the hub and pulley (2)
  5. Fig 1: View Of Crankshaft Balancer
    GM635666Courtesy of GENERAL MOTORS CORP.
  6. Repair or replace the crankshaft balancer as necessary.