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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1618 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankshaft Balancer Replacement >> Installation Procedure

Installation Procedure

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.
  1. Apply a small amount of grease to the crankshaft front cover seal sealing surface if reusing the seal.
    IMPORTANT: The length and location of the weight(s) must be the same as the original.
  2. Ensure that the crankshaft balancer weight(s) is installed in the proper location, if necessary.
    Fig 1: Crankshaft Balancer Weights
    G02105925Courtesy of GENERAL MOTORS CORP.
    NOTE: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.
  3. Apply a small amount of adhesive GM P/N 12346141, (Canadian P/N 10953433), or equivalent into the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.
  4. Align the keyway of the crankshaft balancer with the crankshaft balancer key.
  5. Install the crankshaft balancer onto the end of the crankshaft.
    Fig 2: Crankshaft Balancer
    G02105926Courtesy of GENERAL MOTORS CORP.
  6. Using J 23523-F  , press the crankshaft balancer onto the crankshaft.
    NOTE: Refer to FASTENER NOTICE .
    1. 6.1. Install the J 23523-F  plate and bolts onto the front of the crankshaft balancer.

      Tighten 

      Tighten the bolts to 25 N.m (18 lb ft).

    2. 6.2. Install the J 23523-F  forcing screw into the end for the crankshaft.
    3. 6.3. Install the J 23523-F  bearing, the washer, and the nut onto the forcing screw.
    4. 6.4. Rotate the J 23523-F  nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
  7. Remove the J 23523-F  .
    Fig 3: J 23523-F Plate & Bolts
    G02105927Courtesy of GENERAL MOTORS CORP.
  8. Install the crankshaft pulley and bolts.

    Tighten 

    Tighten the bolts to 58 N.m (43 lb ft).

    Fig 4: Crankshaft Pulley & Bolts
    G02105928Courtesy of GENERAL MOTORS CORP.
  9. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.
    Fig 5: Crankshaft Balancer Washer
    G02105929Courtesy of GENERAL MOTORS CORP.
  10. Install the crankshaft balancer washer and bolt.

    Tighten 

    Tighten the bolt to 95 N.m (70 lb ft).

  11. Install the cooling fan. Refer to FAN REPLACEMENT .
  12. Install the drive belt. Refer to Drive Belt Replacement .
    Fig 6: Crankshaft Balancer Washer & Bolt
    G02105930Courtesy of GENERAL MOTORS CORP.
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