1. Place the clutch waved-plate (A) on a surface plate, and set a dial indicator (B) on the waved-plate.

1. Find the bottom (D) of a phase difference of the waved-plate, zero the dial indicator and make a reference mark on the bottom of the waved-plate.

1. Rotate the waved-plate about 60-degrees apart from the bottom while holding the waved-plate by its circumference. The dial indicator should be at the top (E) of a phase difference. Do not rotate the waved-plate while holding its surface, always rotate it with holding its circumference.

1. Read the dial indicator. The dial indicator reads the phase difference (C) of the waved-plate between bottom and top.

   Standard: | 0.05 mm (0.002 in.) minimum

1. Rotate the waved-plate about 60-degrees. The dial indicator should be at the bottom of a phase difference (F and H), and zero the dial indicator.

1. Measure the phase difference at the other two tops (G and I) of the waved-plate by following steps 3 thru 5.

1. If the two values of the three measurements are within the standard, the waved-plate is OK. If the two values of the three measurements are out of the standard, replace the waved-plate.