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Home >> Chevrolet >> 2015 >> Camaro LS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 6.2L (L99 LS3 LSA) Or 7.0L (LS7) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Crankshaft Balancer Replacement (L99, LS3, LSA) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Flywheel Holder
    GM1199283Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • For manual transmission applications, note the position of the crankshaft balancer before removal. The balancer does not use a key or keyway for positioning. Mark or scribe the end of the crankshaft and the balancer before removal. The crankshaft balancer must be installed to the original position. If replacing the crankshaft balancer, note the location of any existing balance weights, if applicable. Install new balance weights into the new crankshaft balancer, if applicable. Crankshaft balance weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer.
    • 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 is used only during the first pass of the balancer installation procedure. Install a NEW crankshaft balancer bolt and tighten as described in the second, third and fourth passes of the balancer bolt tightening procedure.
  1. Install the J 42386-A  flywheel holding tool and bolts.

    Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A  flywheel holding tool bolts to 50 N.m (37 lb ft).

    2. Fig 2: View Of Balancer Weights In Crankshaft Balancer
    GM63153Courtesy of GENERAL MOTORS COMPANY
  2. Using the old balancer as a reference, mark or scribe the new balancer in the same location, if applicable.
  3. Install balance weights into the new balancer, if applicable. Refer to Crankshaft Balancer Cleaning and Inspection .
    4. Fig 3: Crankshaft Balancer
    GM1408877Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.
    • A thin washer has been added to the LS2 engine. If the washer is present it does not need to be replaced. If no washer is present, one should be added. (P/N 12598247).
  4. Position the balancer (138) onto the end of the crankshaft.
    5. Fig 4: Installing Balancer
    GM1408878Courtesy of GENERAL MOTORS COMPANY
  5. Use the J 41665  crankshaft balancer and sprocket installer in order to 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 balancer installation tool.
    6. Fig 5: Crankshaft Balancer Bolt
    GM1408847Courtesy of GENERAL MOTORS COMPANY
  6. Install the used crankshaft balancer bolt (139) and tighten to 330 N.m (240 lb ft).
  7. Remove the used crankshaft balancer bolt.
    8. Fig 6: Identifying Hub To Crankshaft Distance
    GM63245Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The nose of the crankshaft should be recessed 2.4-4.48 mm (0.094-0.176 in) into the balancer bore.

  8. Measure for a correctly installed balancer.

    If the balancer is not installed to the proper dimensions, install the J 41665  crankshaft balancer and sprocket installer and repeat the installation procedure.

    9. Fig 7: Crankshaft Balancer Bolt
    GM1408847Courtesy of GENERAL MOTORS COMPANY
  9. Install the NEW crankshaft balancer bolt (139).

    LS3/L99

    1. Tighten the crankshaft balancer bolt to 150 N.m (111 lb ft).
    2. Loosen the crankshaft balancer bolt 360 degrees
    3. Tighten the crankshaft balancer bolt to 80 N.m (59 lb ft).
    4. Tighten the crankshaft balancer bolt a final pass to 125 degrees using the J 45059  angle meter.

    LSA

    1. Tighten the crankshaft balancer bolt to 150 N.m (111 lb ft).
    2. Loosen the crankshaft balancer bolt 360 degrees
    3. Tighten the crankshaft balancer bolt to 80 N.m (59 lb ft).
    4. Tighten the crankshaft balancer bolt a final pass to 200 degrees using the J 45059  angle meter.
  10. Remove the J 42386-A  flywheel holding tool.
  11. Install the starter motor. Refer to Starter Replacement (L99, LS3, LSA, LS7) .
  12. Install the power steering gear. Refer to Steering Gear Replacement (N41)Steering Gear Replacement (NV9) .
  13. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement (Except LSA) Air Conditioning Compressor Belt Replacement (LSA, LS7) .
  14. Perform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn .
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