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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1444 (Engine Mechanical - 5.3L (Lm4)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankshaft Balancer Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Crankshaft Balancer And Retaining Bolt
    GM260154Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Ensure that the teeth of J 42386-A  mesh with the teeth of the engine flywheel. See Special Tools and Equipment .
    • The used crankshaft balancer bolt will be used only during the first pass of the balancer installation procedure. Install a NEW bolt and tighten as described in the second pass of the balancer bolt tightening procedure.
    • The crankshaft balancer installation and bolt tightening involves a four stage tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third, and forth passes tighten the new bolt to the proper torque.
    IMPORTANT: Position the balancer onto the end of the crankshaft as straight as possible prior to tool installation.
  1. Install the crankshaft balancer onto the end of the crankshaft.
    2. Fig 2: Installing Balancer Using J 41665
    GM63187Courtesy of GENERAL MOTORS CORP.
  2. Use J 41665  in order to install the crankshaft balancer. See Special Tools and Equipment .
    1. Assemble the threaded rod, nut, washer and installer.

      Insert the smaller end of the installer into the front of the balancer.

    2. Use a wrench and hold the hex end of the threaded rod.
    3. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft.
    4. Remove the tool and reverse the installation tool.

      Position the larger end of the installer against the front of the balancer.

    5. Use a wrench and hold the hex end of the threaded rod.
    6. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft.
    7. Remove the balancer installation tool.
    3. Fig 3: Identifying Hub To Crankshaft Distance
    GM63245Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the used crankshaft balancer bolt.

    Tighten:  Tighten the USED bolt to 330 N.m (240 lb ft).

  4. Remove the used crankshaft balancer bolt.
    IMPORTANT: Recess the nose of the crankshaft 2.4-4.48 mm (0.094-0.176 in) into the balancer bore.
  5. Measure for a correctly installed balancer.

    If the balancer is not installed to the proper dimensions, install the J 41665  and repeat the installation procedure. See Special Tools and Equipment .

  6. Install a NEW crankshaft balancer bolt.

    Tighten: 

    1. Tighten the bolt a first pass to 50 N.m (37 lb ft).
    2. Tighten the bolt a final pass to 140 degrees using J 36660-A .

  7. Remove J 42386-A  and bolts. See Special Tools and Equipment .
  8. Install the starter motor. Refer to Starter Motor Replacement (5.3L Engine) in Engine Electrical.
  9. Install the fan shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
  10. Install the A/C drive belt, if equipped. Refer to Drive Belt Replacement - Air Conditioning  .
  11. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory  .
  12. Perform the crankshaft position (CKP) system variation learn procedure. Refer to CKP System Variation Learn Procedure in Engine Controls.
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