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Home >> Chevrolet >> 2014 >> Express 1500 LS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.8L (L20), 5.3L (LMF), Or 6.0L (L96 LC8) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Crankshaft Balancer Replacement >> Installation Procedure

Installation Procedure

NOTE:
  • Make sure that the teeth of J 42386-A  holding tool mesh with the teeth of the engine flywheel.
  • 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 fourth 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 fourth passes tighten the new bolt to the proper torque.
NOTE:

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 COMPANY
  1. Install the crankshaft balancer onto the end of the crankshaft.
    2. Fig 2: Crankshaft Balancer
    GM1810821Courtesy of GENERAL MOTORS COMPANY
  2. Use the J 41665  installer (2, 3) and the J 41478  installer (1) in order to install the crankshaft balancer.
    1. Assemble the J 41478  installer (1) 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 COMPANY
  3. Install the used crankshaft balancer bolt and tighten to 330 N.m (240 lb ft).
  4. Remove the used crankshaft balancer bolt.
    NOTE:

    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  installer and repeat the installation procedure.

  6. Install a NEW crankshaft balancer bolt using the following steps:
    1. Tighten the crankshaft balancer bolt to 150 N.m (110 lb ft).
    2. Then loosen the bolt 360 degrees.
    3. Tighten the crankshaft balancer bolt a first pass to 80 N.m (59 lb ft).
    4. Tighten the crankshaft balancer bolt a second pass to 125 degrees using J 45059  meter.
  7. Remove the J 42386-A  holding tool and bolts.
  8. Install the starter motor. Refer to Starter Replacement (V8) .
  9. Install the fan shroud - lower. Refer to Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L) .
  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 Air Conditioning Compressor Belt Replacement .
  12. Perform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn .
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