Special Tools

J 42386-A:  Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools

Fig 1: View Of Flywheel & Bolts
Courtesy of GENERAL MOTORS CORP.
NOTE:
• 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 3 step tightening process.
1. Install the flywheel (2) to the crankshaft.
2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flywheel bolts (1).
Fig 2: Flywheel Holding Tool
Courtesy of GENERAL MOTORS CORP.
CAUTION: Refer to Fastener Caution .
3. Install the J 42386-A:  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:  tool bolts to 50 N.m (37 lb ft).

Fig 3: Identifying Flywheel Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
4. Install the engine flywheel bolts.
   1. Tighten the bolts (1-9) a first pass in sequence to 20 N.m (15 lb ft).
   2. Tighten the bolts (1-9) a second pass in sequence to 50 N.m (37 lb ft).
   3. Tighten the bolts (1-9) a final pass in sequence to 100 N.m (74 lb ft).