Tools Required

J 23523-F Crankshaft Balancer Puller and Installer

1. Remove the negative battery cable. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

   in General Information.
2. Remove the upper and the lower radiator shroud. Refer to Engine Cooling.
3. Remove the engine cooling fan. Refer to Engine Cooling.
4. Remove the accessory drive pulley.
5. Raise and suitably support the vehicle. Refer to General Information.
6. Remove the crankshaft balancer (external) bolt.



7. Using the J 23523-F , remove the crankshaft balancer.

Important: Pry out the engine front cover seal with a large screwdriver carefully so you do not distort the engine front cover.

8. Remove the engine front cover seal.
9. Remove the crankshaft key, if necessary.
10. Inspect the oil seal contact area on the crankshaft balancer (external) shaft for grooves or roughness. Replace if necessary.

Tools Required

1. Install the crankshaft balancer key, if removed.
2. Coat the engine front cover sealing area with clean engine oil.

Important: 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 balancer and will have to be replaced.




3. Install the engine front cover seal using the J 22102 . The open end of the seal faces the inside of the engine.
4. Install the stud to the crankshaft. Thread the stud fully into the tapped hole in the crankshaft.
5. Install the crankshaft balancer (external) over the end of the crankshaft.
6. Align the keyway in the crankshaft balancer with the crankshaft key.
7. Use a small amount of RTV sealer GM P/N 12345739 or equivalent to seal the crankshaft key to the crankshaft.
8. Install the bearing, washer, and nut.
9. Turn the nut to pull the crankshaft balancer into place and remove J 22102 .
10. Install the crankshaft balancer bolt and washer.

Tighten
Tighten the crankshaft balancer bolt to 149 N·m (110 lb ft).

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.

11. Install the accessory drive pulley.
12. Install the engine cooling fan.
13. Install the upper and the lower radiator shrouds. Refer to Engine Cooling.
14. Install the negative battery cable.