Warning! Low pressure compressed air can blow debris into your face and eyes. Always wear eye protection or a face shield when using pressurized air. Failure to take adequate safety precautions could result in death or serious injury.
1. Wash all parts in cleaning solvent, except for friction plates and bearing, if removed. Blow parts dry with low pressure compressed air.
2. Check friction plates as follows:
- a. Blow off all lubricant from the friction plates. Do not wipe off with a rag.
- b. Measure the thickness of each plate with a dial caliper or micrometer.
- c. If the thickness of any plate is less than 3.62 mm (0.142 in.), discard all friction plates and replace with an entirely new set.
- d. Look for worn or damaged fiber surface material (both sides).
Note. Replace all nine friction plates with an entirely new set if any individual plate shows evidence of wear or damage. Friction plates must be presoaked before installation.
3. Check the steel plates as follows:
- a. Discard any plate that is grooved or bluish in color. Blue plates are likely warped or distorted.
- b. Check each plate for distortion. Lay the plate on a precision flat surface. Insert a feeler gauge between the plate and the flat surface in several places. Replace any steel plate that is warped more than 0.15 mm (0.006 in.).
4. Holding the clutch hub, rotate the pressure plate to check bearing for smoothness. Replace the bearing if it runs rough, binds or has any end play.
5. Check the slots that mate with the clutch plates on both the clutch shell and hub. Replace shell or hub if slots are worn or damaged.