Flywheel Inspection

Automatic Transmission

Inspect the flywheel (6375) for cracks or other damage that would make it unfit for further service. Inspect the flywheel ring gear for worn, chipped or cracked teeth. If the teeth are damaged, replace the flywheel .

Manual Transmission

With the flywheel installed on the crankshaft (6303) , check the gear face runout.

Flywheel Clutch Surface Machining

Inspect the flywheel for cracks, heat check or other damage that would make it unfit for further use. Acceptable flywheels may be serviced by polishing with fine grade (400 grit) sand paper. Flywheels may be resurfaced to remove scratches or grooves. After resurfacing, the flywheel thicknesses must not be less than the dimensions noted in the chart.

Flywheel Resurfacing Machining Requirements: (see chart below)

1. Mount crankshaft rigidly on crankshaft mounting flange.

2. After machining:
   • Surface runout must not exceed 0.13mm (0.005 inch) TIR, surface finish must be in the range of 4.0/1.3 micrometer (160/52 microinch).
   • Major diameter of dowel pin (press fit diameter) must not extend above the new surface.
   • The clutch pressure plate retaining bolts must screw into the flywheel under hand torque to within 1.50mm (0.06 inch) of new surface.
   • Flywheels with dimensions less than the charted dimensions must not be used; install new service flywheel .

3. Inspect the flywheel for worn, chipped or cracked teeth. If the teeth are damaged, replace the flywheel .