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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 >> On-Vehicle Repair Instructions >> Crankshaft Balancer Replacement >> Installation Procedure

Installation Procedure

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.
IMPORTANT:
  • The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.
  • Apply grease or clean engine oil to the inside of the crankshaft balancer or the end of the crankshaft, to prevent galling during assembly.
  1. Install the balancer onto the end of the crankshaft.
  2. Install J 42845  to the crankshaft balancer.
    IMPORTANT: Apply the lubricant that comes with J 42845  each time the tool is used. Failure to lubricate the J 42845  may prevent the balancer from installing completely.
  3. Using J 42845  install the balancer.
    4. Fig 1: Installing Crankshaft Balancer Using J 42845
    GM639539Courtesy of GENERAL MOTORS CORP.
  4. Tighten the until the crankshaft balancer is completely seated against the crankshaft sprocket.
  5. Remove the J 42845  from the crankshaft.
    6. Fig 2: View Of J 42845
    GM639542Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the crankshaft bolt and washer to the crankshaft.

    Tighten:  Tighten the crankshaft balancer bolt to 255 N.m (189 lb ft).

    7. Fig 3: View Of Crankshaft Balancer Bolt & Washer
    GM470799Courtesy of GENERAL MOTORS CORP.
  7. Remove the J 42847  .
  8. Install the starter motor. Refer to Starter Motor Replacement (8.1L Engine) in Engine Electrical.
  9. Install the fan. Refer to Fan Replacement in Engine Cooling.
  10. Install the A/C belt. Refer to Drive Belt Replacement - Air Conditioning .
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