Figure 7-30. Removing Piston.

TM 10-3930-633-34

Figure 7-30. Removing Piston.

(7) Remove the piston inner seal from the

clutch housing . Remove the piston outer seal

from the groove in the piston.

(8) If the input shaft bushing is worn or

damaged, replace the drum.

b. Inspection.

Figure 7-31. Clutch Piston Check Ball.

(1) Inspect the clutch cylinder thrust sur-

(3) Check the clutch release spring for

faces, piston bore, and clutch plate serrations for

distortion and cracks. Replace the spring if it is

scores or burrs. Minor scores or burrs may be

distorted or cracked.

removed wit h crocus cloth. Replace the clutch

(4) Inspect the composition and the steel

cylinder if it is badly -scored or damaged.

clutch plates and the clutch pressure plate for

(2) Check the fluid passages in the clutch

worn or scored bearing surfaces. Replace all parts

cylinder for obstructions. Clean out all fluid

that are deeply scored.

passages. Inspect the clutch piston for scores and

replace if necessary. Inspect the piston check ball

(5) Check the clutch plates for flatness and fit

on the clutch hub serrations. Discard any plate

for freedom of movement and proper seating (fig.