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Harmonic Balancer - Crankshaft Pulley: Service and Repair




Crankshaft Balancer Replacement (LS9 /LSA) (6.2 L)

Special Tools
* J 41816 Crankshaft Balancer Remover
* J 41816-2 Crankshaft End Protector
* J 42386-A Flywheel Holding Tool
* J 41665 Crankshaft Balancer and Sprocket Installer
* J 45059 Angle Meter
* EN-47812 Installer Bolt

Removal Procedure




1. Remove the air conditioning (A/C) drive belt. Refer to Air Conditioning Compressor Belt Replacement (Air Conditioning Compressor Belt Replacement).
2. Remove the power steering gear. Refer to Steering Gear Replacement (Left Hand Drive and All Wheel Drive) (Service and Repair)Steering Gear Replacement (Left Hand Drive and Rear Wheel Drive) (Service and Repair)Steering Gear Replacement (Right Hand Drive and Rear Wheel Drive) (Service and Repair).
3. Remove the starter motor. Refer to Starter Replacement (SFI) (Service and Repair)Starter Replacement (V8) (Service and Repair).
4. Remove the right transmission cover and bolt.





Caution: Refer to Fastener Caution (Fastener Caution).

Note:
* If replacing the crankshaft balancer on manual transmission applications, note the location of any existing balance weights, if applicable. Crankshaft balance weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer. Refer to Engine Balancing (Procedures).
* Do not use the crankshaft balancer bolt again. Install a NEW crankshaft balancer bolt during final assembly.

5. Install the J 42386-A and bolts.
Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A bolts to 50 Nm (37 lb ft).




6. Remove the crankshaft balancer bolt (139).
Do not discard the crankshaft balancer bolt. The balancer bolt will be used during the balancer installation procedure.




7. Use the J 41816 (1) and the J 41816-2 (2) in order to remove the crankshaft balancer.




8. Remove the crankshaft balancer (138).




9. Note the position of the crankshaft balance weights, if applicable. Refer to Engine Balancing (Procedures) and Crankshaft Balancer Cleaning and Inspection ().

Installation Procedure





Note:
* If replacing the crankshaft balancer, note the location of any existing balance weights, if applicable. Install new balance weights into the new crankshaft balancer, if applicable. Crankshaft balance weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer. Refer to Engine Balancing (Procedures) and Crankshaft Balancer Cleaning and Inspection ().
* The crankshaft balancer installation and bolt tightening involves a four step tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third and fourth passes tighten the NEW bolt to the proper torque.

1. Install the J 42386-A and bolts.
Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation.
Tighten the J 42386-A bolts to 50 Nm (37 lb ft).




2. Using the old balancer as a reference, mark or scribe the new balancer in the same location, if applicable. Refer to Crankshaft Balancer Cleaning and Inspection ()
3. Install balance weights into the new balancer, if applicable.




4. Install the crankshaft balancer washer (1) onto the crankshaft balancer.





Note: The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.

5. Position the balancer (138) onto the end of the crankshaft.




6. Use the J 41665 (2) and the EN-47812 (1) in order to install the balancer.
Assemble the EN-47812 (1), nut, washer and the J 41665 .
7. Insert the smaller end of the J 41665 (2) into the front of the balancer.

1. Use a wrench and hold the hex end of the EN-47812 (1).
2. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft.
3. Remove the J 41665 (2) and reverse the installation tool.

8. Position the larger end of the J 41665 (2) against the front of the balancer.

1. Use a wrench and hold the hex end of the EN-47812 (1).
2. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft.
3. Remove the balancer installation tools.




9. Install the NEW crankshaft balancer bolt (139).

* Tighten the crankshaft balancer bolt a first pass to 150 Nm (110 lb ft).
* Loosen the crankshaft balancer bolt a second pass to 360 degrees.
* Tighten the crankshaft balancer bolt a third pass to 50 Nm (37 lb ft).
* Tighten the crankshaft balancer bolt a final pass to 230 degrees) using the J 45059 .

10. Remove the J 42386-A .
11. Install the starter motor. Refer to Starter Replacement (SFI) (Service and Repair)Starter Replacement (V8) (Service and Repair).
12. Install the power steering gear. Refer to Steering Gear Replacement (Left Hand Drive and All Wheel Drive) (Service and Repair)Steering Gear Replacement (Left Hand Drive and Rear Wheel Drive) (Service and Repair)Steering Gear Replacement (Right Hand Drive and Rear Wheel Drive) (Service and Repair).
13. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement (Air Conditioning Compressor Belt Replacement).
14. Perform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn (Service and Repair).

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