Crankshaft Balancer Installation L98, LS2

Tools Required

1. Use J 41665  (1) to install the crankshaft balancer (2).

1.1.	Assemble the threaded rod, nut, washer and installer.

Insert the smaller end of the installer into the front of the crankshaft balancer (2).

1.2.	Use a wrench and hold the hex end of the threaded rod.

1.3.	Use a second wrench and rotate the installation tool nut clockwise, until the crankshaft balancer (2) is started onto the crankshaft.

1.4.	Remove the tool and reverse the installation tool.

Position the larger end of the installer against the front of the crankshaft balancer (2).

1.5.	Use a wrench and hold the hex end of the threaded rod.

1.6.	Use a second wrench and rotate the installation tool nut clockwise, until the crankshaft balancer (2) is installed onto the crankshaft.

1.7.	Remove the J 41665  (1).

Notice: Refer to Fastener Notice in the Preface section.




2. Install the used crankshaft balancer retaining bolt (1).

Tighten
Tighten the bolt to 330 N·m (240 lb ft).

3. Remove the used crankshaft balancer retaining bolt (1).



4. Measure the distance the balancer protrudes from the crankshaft nose and ensure dimension (A) is to specification

Specification
Dimension (A): 2.4-4.48 mm (0.094-0.176 in)

If the balancer is not installed to the correct dimensions, install the J 41665 and repeat the installation procedure.

Notice: Refer to Fastener Notice in the Preface section.




5. Install the NEW crankshaft balancer retaining bolt (1).

Tighten

•	First Pass: Tighten the bolts to 50 N·m (37 lb ft).

•	Final Pass: Tighten an additional 140 degrees using the J 45059 .




6. Remove the J 42386-A to cylinder block retaining bolts (2).
7. Remove the J 42386-A  (1).



8. Install the right transmission cover (1).

Notice: Refer to Fastener Notice in the Preface section.

9. Install the right transmission cover (1) to engine oil pan retaining bolt (2).

Tighten
Tighten the bolt to 12 N·m(106 lb in).

Crankshaft Balancer Installation LS3

Tools Required

Notice: Refer to Fastener Notice in the Preface section.





Note: 

•

For manual transmission applications, note the position of the crankshaft balancer before removal. The balancer does not use a key or keyway for positioning. Mark or scribe the end of the crankshaft and the balancer before removal. The crankshaft balancer must be installed to the original position. 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.

•	The crankshaft balancer installation and bolt tightening involves a 4 stage 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 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation.

Tighten
Tighten the J 42386-A bolts to 50 N·m (37 lb ft).




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



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




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

5. Position the balancer (1) onto the end of the crankshaft.



6. Use the J 41665 and the J 41478 in order to install the balancer.

6.1.	Assemble the J 41478 threaded rod, nut, washer, and the J 41665 installer.

Insert the smaller end of the installer into the front of the balancer.

6.2.	Use a wrench and hold the hex end of the threaded rod.

6.3.	Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft.

6.4.	Remove the tool and reverse the installation tool.

Position the larger end of the installer against the front of the balancer.

6.5.	Use a wrench and hold the hex end of the threaded rod.

6.6.	Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft.

6.7.	Remove the balancer installation tools.




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

Tighten

1. Tighten the crankshaft balancer bolt a first pass to 150 N·m (110 lb ft).
2. Loosen the crankshaft balancer bolt a second pass 360 degrees.
3. Tighten the crankshaft balancer bolt a third pass to 50 N·m (37 lb ft).
4. Tighten the crankshaft balancer bolt a final pass to 230 degrees using the J 45059 .
8. Remove the J 42386-A .