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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Mechanical - 5.3L (L83) Or 6.2L (L86) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Crankshaft Balancer Replacement >> Installation Procedure

Installation Procedure

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NOTE:
  • 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.
  • 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.
    Fig 1: Crankshaft Balancer
    GM3274749Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.

  1. Position the crankshaft balancer (1) onto the end of the crankshaft.
    2. Fig 2: EN-41665 Crankshaft Balancer And Sprocket Installer
    GM3270674Courtesy of GENERAL MOTORS COMPANY
  2. Install the EN-41665  crankshaft balancer and sprocket installer and the threaded rod from the EN-41478  crankshaft front oil seal installer to crankshaft balancer and install the balancer.
    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 J 41665  crankshaft balancer and sprocket installer and the threaded rod.
    3. Fig 3: Crankshaft Balancer Bolt
    GM3274624Courtesy of GENERAL MOTORS COMPANY
  3. Install the USED crankshaft balancer bolt (1). Tighten the USED bolt to 330 N.m (244 lb ft).
  4. Remove the USED crankshaft balancer bolt.
    5. Fig 4: EN-41665 Crankshaft Balancer And Sprocket Installer
    GM3270673Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The nose of the crankshaft should be recessed 2.92 - 5.46 mm (0.114 - 0.215 in) into the balancer bore.

  5. Measure for a correctly installed balancer. If the balancer is not installed to the proper dimension, install the EN-41665  crankshaft balancer and sprocket installer and repeat the installation procedure.
    6. Fig 5: Crankshaft Balancer Bolt
    GM3274624Courtesy of GENERAL MOTORS COMPANY
  6. Install the NEW crankshaft balancer bolt (1).
    1. Tighten the bolt a first pass to 120 N.m (89 lb ft).
    2. Loosen 360 degrees.
    3. Tighten the bolt a first pass to 80 N.m (59 lb ft).
    4. Balancer bolt with flanged head, tighten the crankshaft balancer bolt a final pass to 125 degrees using the J 45059  angle meter.
    5. Balancer bolt with retained rotating washer, tighten the crankshaft balancer bolt a final pass to 200 degrees using the J 45059  angle meter.
    6. Remove the EN-42386-A  flywheel holding tool.
    7. Fig 6: Flywheel Holding Tool And Bolts
    GM3270671Courtesy of GENERAL MOTORS COMPANY
  7. Remove the EN-42386-A  flywheel holding tool (2) and bolts.
  8. Install the starter motor. Refer to Starter Replacement (L83, L86) .
  9. Install the vacuum pump belt. Refer to Vacuum Pump Belt Replacement .
  10. Perform the crankshaft position variation learn. Crankshaft Position Variation Learn
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