3rd Clutch Inspection

3rd Clutch Inspection

Tools Required

SA9179NE Dial Indicator




1. Inspect the 3rd clutch piston (818) and the clutch piston check valve.
2. Replace the 3rd clutch piston if the check valve is missing, stuck, or damaged.




3. Inspect the following components for wear or damage:
* 3rd clutch piston spring cap (815)
* 3rd clutch piston retaining ring (814)
* 3rd clutch piston return spring (816)
4. Replace the components if faulty.




5. Inspect the following 3rd clutch components for wear, damage, or severe discoloration:
* 3rd clutch steel flat plates (813)
* 3rd clutch steel wave plates (830)
* 3rd clutch fiber plates (812)
* 3rd clutch selective backing plate (811)
6. If the clutch steel plates are worn or damaged or severely discolored, replace the plates as a complete set.
7. If the clutch fiber plates are worn, damaged, or discolored, replace the plates as a complete set.
8. If the 3rd clutch selective backing plate (811) is worn, damaged, or severely discolored, inspect the clutch backing plate-to-top disc clearance, then replace the clutch backing plate making sure to use the correct selective size backing plate.

Clutch Wave Plate Phase Difference Inspection




1. Place the clutch wave plate on a surface plate, and set SA9179NE on the wave plate.
2. Find the bottom (D) of a phase difference of the wave plate, zero the SA9179NE and make a reference mark on the bottom of the wave plate.
3. Rotate the clutch wave plate of the clutch about 60-degrees apart from the bottom while holding the wave plate by the circumference. The SA9179NE should be at the top (E) of a phase difference. Do not rotate the wave plate while holding the surface, always rotate the plate by holding the circumference.
4. Read the SA9179NE. The SA9179NE reads the phase difference (C) of the wave plate between the bottom and top.

Standard: 0.05 mm (0.002 in) minimum

5. Rotate the wave plate of the clutch about 60-degrees. The SA9179NE should be at the bottom of a phase difference (F and H), and zero the SA9179NE.
6. Measure the phase difference at the other 2 tops (G and I) of the wave plate by following steps 3 through 5.
7. If the 2 values of the 3 measurements are within the standard, the wave plate is OK. If the 2 values of the 3 measurements are out of the standard, replace the wave plate.