GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 23523-F Crankshaft Balancer Puller and Installer


    Object Number: 342212  Size: SH
  1. Remove the fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  2. Remove the drive belt from the vehicle. Refer to Drive Belt Replacement .
  3. Raise the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the lower fan shroud from the radiator. Refer to Fan Shroud Replacement .
  5. Remove the crankshaft pulley from the crankshaft balancer.

  6. Object Number: 342200  Size: SH
  7. Remove the crankshaft bolt (3) and washer (2) from the crankshaft.

  8. Object Number: 60256  Size: SH
  9. Use the J 23523-F to remove the crankshaft balancer.
  10. Remove the J 23523-F from the crankshaft balancer.

Installation Procedure

Tools Required
J 23523-F Crankshaft Balancer Puller and Installer

Important: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tools) must be followed or movement of the inertial weight section of the crankshaft balancer will destroy the balance and will have to be replaced.

  1. Install the crankshaft balancer end of the crankshaft.

  2. Object Number: 66720  Size: SH
  3. Install J 23523-F to the crankshaft balancer.
  4. Use the J 23523-F and install the crankshaft balancer to the crankshaft.
  5. Remove the tool from the crankshaft balancer.

  6. Object Number: 342200  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Make sure that when installing the crankshaft bolt and washer, the curve part of the washer is facing away from the engine block.

  7. Install the crankshaft bolt (3) and washer (2) to the crankshaft.
  8. Tighten
    Tighten the crankshaft bolt to 149 N·m (110 lb ft).


    Object Number: 342212  Size: SH
  9. Install the crankshaft pulley to the crankshaft.
  10. Install the crankshaft pulley bolts.
  11. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  12. Install the lower fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  13. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Install the drive belt on the pulley. Refer to Drive Belt Replacement .
  15. Install the upper fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.