Tools Required

J 23523-F Crankshaft Balancer Remover and Installer

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



5. Remove the crankshaft balancer bolt and washer from the crankshaft.



6. Using the J 23523-F remove the crankshaft balancer from the crankshaft.
7. Remove the crankshaft balancer key from the crankshaft.
8. Clean the sealant from key and crankshaft.
9. Inspect the key and the crankshaft for damage.
10. Replace the key if damaged and loose in the crankshaft.
11. If a new key is loose in the crankshaft replace the crankshaft.

1. Apply a small amount of RTV sealant GM P/N 12346286 to crankshaft balancer key before installing.
2. Lightly tap the crankshaft balancer onto the crankshaft.




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: When installing the crankshaft balancer bolt and washer, make sure that the curved part of the washer is pointed away from the engine.

3. Install the crankshaft balancer bolt and washer to the crankshaft.

Tighten
Tighten the bolt to 270 N·m (200 lb ft).




4. Install the crankshaft pulley to the crankshaft balancer.
5. Install the crankshaft pulley bolts.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

6. Install the lower fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
7. Lower the vehicle.
8. Install the drive belt on the drive pulleys. Refer to Drive Belt Replacement .