Harmonic Balancer - Crankshaft Pulley: Service and Repair

Crankshaft Balancer Replacement

^ Tools Required
- J 23523-F Balancer Remover and Installer

Removal Procedure
1. Disconnect the battery negative cable.





2. Remove the fan shroud assembly.
3. Remove the drive belt.
4. Remove the crankshaft balancer bolt and washer.





5. Remove the bolts and the crankshaft pulley.





Notice: Refer to Fastener Notice in Service Precautions.

6. Use the J 23523-F in order to remove the crankshaft balancer.
6.1. Install the J 23523-F plate and bolts onto the crankshaft balancer.
^ Tighten the bolts to 25 Nm (18 ft. lbs.).
6.2. Install the J 23523-F forcing screw into the plate.
6.3. Rotate the J 23523-F forcing screw clockwise in order to remove the crankshaft balancer.
7. Remove the J 23523-F from the crankshaft balancer.





8. Note the position and length of any front groove pins (crankshaft balancer), if applicable.
9. Clean and inspect all parts.

Installation Procedure
1. Apply a small amount of grease to the crankshaft front cover oil seal sealing surface.





2. Look to ensure that the front groove pin (crankshaft balancer) is installed in the proper location if applicable.
The length and location of the pins must be the same as the original length and location.
3. Apply a small amount of adhesive GM P/N 12346141 (Canadian P/N 1093433) or equivalent onto the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.





4. Align the keyway of the crankshaft balancer with the crankshaft balancer key.
5. Install the crankshaft balance, onto the end of the crankshaft.





6. Use the J 23523-F in order to press the crankshaft balancer onto the crankshaft.

Notice: Refer to Fastener Notice in Service Precautions.

6.1. Install the J 23523-F plate and bolts onto the front of the crankshaft balancer.
^ Tighten the plate bolts to 25 Nm (18 ft. lbs.).
6.2. Install the J 23523-F screw into the end for the crankshaft.
6.3. Install the J 23523-F bearing, the washer, and the nut onto the screw.
6.4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
7. Remove the J 23523-F.





8. Install the crankshaft pulley and bolts.
^ Tighten the crankshaft pulley bolts to 58 Nm (43 ft. lbs.).





9. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.





10. Install the crankshaft balancer washer and the bolt.
^ Tighten the crankshaft balancer bolt to 95 Nm (70 ft. lbs.).
11. Install the drive belt.
12. Install the fan shroud assembly
13. Connect the battery negative cable.