25. Engine Flywheel Clean and Inspect

Engine Flywheel Cleaning and Inspection

- Tools Required
- J 8001 Dial Indicator Set
- J 26900-13 Magnetic Indicator Base





1. Clean the flywheel in solvent.

Caution: Refer to Safety Glasses Caution in Service Precautions.

2. Dry the flywheel with compressed air.
3. Inspect the manual transmission flywheel for the following:
- Damaged ring gear teeth. Replace the flywheel if the ring gear is damaged, cracked or worn.
- Loose or improperly positioned ring gear. The ring gear has an interference fit onto the flywheel and should be positioned completely against the flange of the flywheel.
- A scored, grooved or damaged friction surface. Replace the flywheel if the surface is damaged or excessively worn.
4. Inspect the automatic transmission flywheel for the following:
- Damaged ring gear teeth. Replace the flywheel if the ring gear is damaged, cracked or worn.
- Stress cracks around the flywheel-to-crankshaft bolt hole locations.

Important: Do not attempt to repair the welded areas that retain the ring gear to the flywheel plate. Install a new flywheel.

- Welded areas that retain the ring gear onto the flywheel for cracking.





5. Measure the flywheel face runout using a J 8001 with a J 26900-13. Replace the flywheel if the runout exceeds 0.2 mm (0.0078 inch).