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Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Make sure that the teeth of J 42386-A  are fully engaged into the flywheel ring gear teeth.
  • 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, third and forth passes 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: The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.
    Fig 1: Crankshaft Balancer And Retaining Bolt
    GM260154Courtesy of GENERAL MOTORS CORP.
  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 the J 41665  and J 41478  for the following steps. See Special Tools .
    1. Assemble the J 41478  threaded rod, nut, washer and J 41665  installer. See Special Tools .

      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 tools.
    3. Fig 3: Identifying Hub To Crankshaft Distance
    GM63245Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  3. Install the used crankshaft balancer bolt.

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

  4. Remove the used crankshaft balancer bolt.
    IMPORTANT: The nose of the crankshaft should be recessed 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  . See Special Tools .

  6. Install a NEW crankshaft balancer bolt.

    Tighten: 

    1. Tighten the crankshaft balancer bolt a first pass to 50 N.m (37 lb ft).
    2. Tighten the crankshaft balancer bolt a second pass to 140 degrees using the J 45059  . See Special Tools .

  7. Remove the J 42386-A  .
  8. Install the starter motor. Refer to Starter Motor Replacement .
  9. Install the fan shroud. Refer to Fan Shroud Replacement .
  10. Install the accessory drive belt (if not equipped with A/C). Refer to Drive Belt Replacement - Accessory .
  11. Install the A/C drive belt (if equipped). Refer to Drive Belt Replacement - Air Conditioning .
  12. Perform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn .
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