Tools Required

Important: 

•	Note the position and direction of the engine flywheel before removal. Mark or scribe the end of the crankshaft and flywheel before component removal. The existing engine flywheel must be installed to the original position and direction. Refer to Engine Balancing .

•	The flywheel does not use a locating pin for alignment and will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a 2 stage tightening process.

•	When installing the friction washer to the rear face of the crankshaft, align the pilot hole of the crankshaft (1) and the locating hole of the washer (2).

1. Install the flywheel washer (132) to the rear face of the crankshaft.
2. Install the flywheel (134) to the crankshaft.
3. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flywheel bolts (133).

Notice: Refer to Fastener Notice in the Preface section.




4. 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).




5. Install the engine flywheel bolts.

Tighten

1. Tighten the engine flywheel bolts (1-6) a first pass in sequence to 30 N·m (22 lb ft).
2. Tighten the engine flywheel bolts (1-6) a final pass in sequence to 40 degrees using the J 45059 .