Harmonic Balancer - Crankshaft Pulley: Service and Repair
^ Tools Required- J 23523-F Crankshaft Balancer Remover and Installer
Removal Procedure
1. Remove the fan shroud from the radiator.
2. Remove the drive belt from the pulleys.
3. Remove the fan clutch from the water pump (if needed).
4. Raise the vehicle. Refer to Vehicle Lifting.
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.
Installation Procedure
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 J23523-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: Refer to Fastener Notice in Service Precautions.
5. Install the crankshaft balancer (external) bolt and washer.
^ Tighten the bolt to 270 Nm (200 ft. lbs.).
6. Install the drive belt pulley to the crankshaft balancer.
^ Tighten the bolts to 50 Nm (37 ft. lbs.).
7. Lower the vehicle.
8. Install the fan clutch to the water pump (if needed).
9. Install the drive belt on the pulleys.
10. Install the fan shroud to the radiator.