Tools Required

J 23523-F Balancer Remover and Installer

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Remove the fan shroud assembly. Refer to Fan Shroud Replacement in Engine Cooling.
3. Remove the drive belt. Refer to Drive Belt Replacement .



4. Remove the crankshaft balancer bolt and washer.



5. Remove the bolts and the crankshaft pulley.




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.

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
Tighten the bolts to 25 N·m (18 lb ft).

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. Refer to Crankshaft Balancer Cleaning and Inspection in Engine Unit Repair.

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



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 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 balancer onto the end of 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.

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

6.1.	Install the J 23523-F plate and bolts onto the front of the crankshaft balancer.

Tighten
Tighten the plate bolts to 25 N·m (18 lb ft).

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
Tighten the crankshaft pulley bolts to 58 N·m (43 lb ft).




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
Tighten the crankshaft balancer bolt to 95 N·m (70 lb ft).

11. Install the drive belt. Refer to Drive Belt Replacement .
12. Install the fan shroud assembly. Refer to Fan Shroud Replacement in Engine Cooling.
13. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.