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 TM 55-1905-223-24-16
c.
Remove two mounting flanged screws (22).
d. Separate brake housing (6) from power plate (24).
e. Slide housing (6) off splined end of shaft (11).
f.
Remove gasket (7), spring retainer (8), compression springs (9), and torque pins (10).
g. Slide disk brake (12), disk brake-(13), and disk brake (14) off splined end of shaft.
h. Repeat step for remaining disks.
i.
Secure shaft (11) in a (soft-jaw) vise.
j.
Remove power plate (24) from shaft end by tapping on power plate (24) with soft face hammer.
k.
Remove shaft from vise.
WARNING
Direct piston away from the body during the following procedure.
l.
Separate piston (1, FIGURE 4-29) from power plate (3, FIGURE 4-29) by introducing low pressure air (15 psi) into
failsafe brake hydraulic inlet (2, FIGURE 4-29).
m. Remove packing retainer (16, FIGURE 4-28), preformed packing (17), and backup preformed packing (18 and 19)
from piston (15). Backup preformed packing (18 and 19) will be destroyed during removal. Note location of
packing retainer and preformed packing to be used during assembly.
n. Remove bearings (5 and 20) from housing (6) and powerplate (24).
o. Remove relief valve (23) and inspect spring-loaded ball to ensure ball operates freely and free from contamination.
Replace if necessary.
REPAIR
Repair of failsafe brake assembly (1) consists of replacing: preformed packing (3), (17), (18) and (19), retaining rings-
(4 and 21), annular ball bearings (5 and 20) gasket (7), disk brakes (12), (13) and (14), piston (15), and packing
retainer (16).
4-63
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