Crankshaft Balancer Installation L76

Special Tools

For equivalent regional tools, refer to Special Tools.

Caution: Refer to Fastener Caution in the Preface section.





Note: The used crankshaft balancer bolt is used only during the installation procedure. Install a NEW crankshaft balancer bolt during final assembly.

1. Install the J 42386-A holding tool and bolts.

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





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

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



3. Use the J 41665 installer and the J 41478 seal installer in order to install the balancer.

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

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

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

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

3.4.	Remove and reverse the installation tool.

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

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

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

3.7.	Remove the balancer installation tools.




4. Install the used crankshaft balancer bolt (139) and tighten to 330 N·m (240 lb ft).
5. Remove the used crankshaft balancer bolt.




Note: The nose of the crankshaft should be recessed 2.4-4.48 mm (0.094-0.176 in) into the balancer bore.

6. Measure for a correctly installed balancer.

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




7. Install the NEW crankshaft balancer bolt.

7.1.	Tighten the crankshaft balancer bolt a first pass to 150 N·m (110 lb ft).

7.2.	Loosen the crankshaft balancer bolt a second pass 360 degrees.

7.3.	Tighten the crankshaft balancer bolt a third pass to 50 N·m (37 lb ft).

7.4.	Tighten the crankshaft balancer bolt a final pass to 230 degrees using the J 45059 meter .

8. Remove the J 42386-A holding tool .

Crankshaft Balancer Installation 6.2L LS3

Special Tools

For equivalent regional tools, refer to Special Tools.

Caution: Refer to Fastener Caution in the Preface section.





Note: The used crankshaft balancer bolt is used only during the installation procedure. Install a NEW crankshaft balancer bolt during final assembly.

1. Install the J 42386-A holding tool and bolts.

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




2. 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.

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



4. Use the J 41665 installer and the J 41478 seal installer in order to install the balancer.

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

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

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

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

4.4.	Remove the tool and reverse the installation tool.

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

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

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

4.7.	Remove the balancer installation tools.




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

5.1.	Tighten the crankshaft balancer bolt a first pass to 150 N·m (110 lb ft).

5.2.	Loosen the crankshaft balancer bolt a second pass 360 degrees.

5.3.	Tighten the crankshaft balancer bolt a third pass to 50 N·m (37 lb ft).

5.4.	Tighten the crankshaft balancer bolt a final pass to 230 degrees using the J 45059 meter .

6. Remove the J 42386-A holding tool .