Tools Required

J 23523-F Crankshaft Balancer Remover and Installer

1. Remove the fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
2. Remove the drive belt from the pulleys. Refer to Drive Belt Replacement .
3. Remove the fan clutch from the water pump (if needed). Refer to Fan Clutch Replacement in Engine Cooling.
4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
5. Remove the drive belt pulley from the crankshaft balancer.



6. Remove the crankshaft balancer bolt and washer.



7. Using the J 23523-F remove the crankshaft balancer from the crankshaft.
8. Remove the crankshaft key from the crankshaft, if necessary.
9. Remove the tool from the crankshaft balancer.

Notice: 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 tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.

1. Apply a thin coating of RTV sealant GM P/N 121346286 to the crankshaft key.
2. Install the crankshaft balancer key in the crankshaft.
3. Use the J 23523-F to install the crankshaft balancer on the crankshaft.

3.1.	Install the stud to the crankshaft and thread the stud fully into the tapered hole in the crankshaft.

3.2.	Install the crankshaft balancer (external) over the end of the crankshaft.

3.3.	Install the bearings, washer, and the nut to the crankshaft using the following procedures:

3.4.	Turn the nut to pull the crankshaft balancer (external) into place.




4. Remove the tool from the crankshaft balancer.




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.

5. Install the crankshaft balancer (external) bolt and washer.

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




6. Install the drive belt pulley to the crankshaft balancer.

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

7. Lower the vehicle.
8. Install the fan clutch to the water pump (if needed). Refer to Fan Clutch Replacement in Engine Cooling.
9. Install the drive belt on the pulleys. Refer to Drive Belt Replacement .
10. Install the fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.