Flywheel Clutch Surface Machining

Inspect the flywheel (6375) for cracks, heat check, or other damage that would make it unfit for further use. Acceptable flywheels may be repaired by polishing with fine grade (400 grit) sandpaper. 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 in Specifications portion of this section.

• Mount flywheel rigidly on crankshaft mounting flange.
• 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.

Dimension A is the minimum acceptable dimension from the crankshaft mounting surface to the new resurfaced clutch face surface. Dimension B is a referenced minimum acceptable dimension for the overall width of the outer flange.

Item	Part Number	Description
1	—	Dowel Pin (Part of 6375)
2	6375	Flywheel
3	—	Ring Gear (Part of 6375)
4	6303	Crankshaft
A	—	Dimension A
B	—	Dimension B
C	—	Dowel Pin Height
D	—	Pressure Plate Bolt Height