TM 55-1930-209-14&P-21
c.
Clutch disassembly
(1)
Refer to Figure 5-47 and loosen the five jam nuts and band screws.
(2)
Remove cotter keys from band live and dead end line pins.
(3)
Remove link pins.
(4)
Remove four clutch band retaining springs.
(5)
Remove clutch band.
NOTE
Do not disassemble the clutch mechanism further unless there is evidence of excessive wear of
the actuating arm pin holes, bearing or air actuator failure. The flexible air line and elbows may be
replaced without removal of the air actuator, clevis or actuating arm.
(6)
Remove nuts, bolts and washers that hold actuating arm pin and band dead end frame pin.
(7)
Disconnect clevis from air actuator and actuating arm. Actuating arm and pin, and dead end link and
frame pin can now be removed.
(8)
Remove live end guide bar.
(9)
Disconnect flexible air line.
(10)
Remove bolts and lock washer mounting air chamber.
(11)
Remove air chamber.
d.
Clutch assembly inspection and repair
(1)
Clean all parts except the clutch band with a suitable solvent and dry thoroughly.
(2)
Wipe clutch band pads with a solvent dampened cloth.
(3)
Inspect all parts for signs of excessive wear or other damage. Pay particular attention to actuating arm
and link pin holes for sings of elongation.
(4)
Inspect all mounting hardware for damaged threads. Retap holes as necessary and replace damaged
bolts.
(5)
The four retracting springs are all same length when new. Spring attached nearest set screw #3 is
stretched most and may elongate after extended use. Replace all springs if they are not the same length.
(6)
Repair all other components by replacement of defective parts.
5-113
