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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (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 Savana and 2003 Chevrolet Chevy Express. 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 oil seal sealing surface.
  2. Look to ensure that the front groove pin (crankshaft balancer) is installed in the proper location if applicable.

    The length and location of the pins must be the same as the original length and location.

    Fig 1: Ensuring Front Groove Pin Proper Installation
    G02077823Courtesy of GENERAL MOTORS CORP.
  3. Apply a small amount of adhesive GM P/N 12346141 (Canadian P/N 1093433) or equivalent onto 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: Installing Crankshaft Balancer
    G02077824Courtesy of GENERAL MOTORS CORP.
  6. Use the J 23523-F  in order to press the crankshaft balancer onto the crankshaft.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
    1. Install the J 23523-F  plate and bolts onto the front of the crankshaft balancer.

      Tighten 

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

    2. Install the J 23523-F  screw into the end for the crankshaft.
    3. Install the J 23523-F  bearing, the washer, and the nut onto the screw.
    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: Pressing Crankshaft Balancer Using J 23523-F
    G02077825Courtesy of GENERAL MOTORS CORP.
  8. Install the crankshaft pulley and bolts.

    Tighten 

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

    Fig 4: Installing Crankshaft Pulley & Bolts
    G02077826Courtesy of GENERAL MOTORS CORP.
  9. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.
    Fig 5: Ensuring Crown Of Crankshaft Balancer Washer Position
    G02077827Courtesy of GENERAL MOTORS CORP.
  10. Install the crankshaft balancer washer and the bolt.

    Tighten 

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

    Fig 6: Installing Crankshaft Balancer Washer & Bolt
    G02077828Courtesy of GENERAL MOTORS CORP.
  11. Install the drive belt. Refer to Drive Belt Replacement .
  12. Install the fan shroud assembly. Refer to FAN SHROUD REPLACEMENT .
  13. Connect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure .
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