Clutch Wave-plate Phase Difference Inspection
- Place the clutch wave-plate (A) on a surface plate, and set a dial indicator (B) on the wave-plate.
- Find the bottom (C) of a phase difference of the wave-plate, zero the dial indicator and make a reference mark on the bottom of the wave-plate.
- Rotate the clutch wave-plate of the 1st, 1st-hold, 2nd, 4th, and 5th clutches about 60-degrees apart from the bottom while holding the wave-plate by its circumference, and rotate the 3rd clutch wave-plate about 72-degrees or 54-degrees apart from the bottom while holding the wave-plate by its circumference. The dial indicator should be at the top (D) of a phase difference. Do not rotate the wave-plate while holding its surface, always rotate it by holding its circumference.
- Read the dial indicator. The dial indicator reads the phase difference (E) of the wave-plate between the bottom and the top.
Standard Phase Difference:
1st Clutch: 0.17-0.30 mm (0.007-0.012 in.)
1st-hold Clutch: 0.10-0.20 mm (0.004-0.008 in.)
2nd Clutch: 0.11-0.21 mm (0.004-0.008 in.)
3rd Clutch: 0.10-0.20 mm (0.004-0.008 in.)
4th Clutch: 0.10-0.20 mm (0.004-0.008 in.)
5th Clutch: 0.11-0.13 mm (0.004-0.005 in.)
- Rotate the wave-plate of the 1st, 1st-hold, 2nd, 4th, and 5th clutches about 60-degrees, and the 3rd clutch wave-plate about 54-degrees or 72-degrees. The dial indicator should be at the bottom of a phase difference (F and G), and zero the dial indicator.
- Measure the phase difference at the other two tops (H and I) of the wave-plate by following steps 3 thru 5.
- If two of the three measurements are within the standard, the wave-plate is OK. If two of the three measurements are out of the standard, replace the wave-plate.