TM 1-1520-238-23
6-296.16
Change 6
6.67A.
MAIN TRANSMISSION ROTOR BRAKE ACTUATOR (PARKER-HANNIFIN)
DISASSEMBLY/ASSEMBLY (AVIM) – continued
(3) Decrease pressure to 0 PSI. Then slowly in-
crease pressure to 80 0 PSI for a period of
five minutes. After pressure is stabilized at 80
PSI, check for disk/lining clearance. Use
thickness gage. Disk should have 0.06
0.030 INCH clearance each side. Remove
disk segment from actuator. Failure of disk
segment to move freely is reason for rejec-
tion. Leakage, other than a slight wetting at
seals insufficient to form a drop, is reason for
rejection.
(4) Decrease pressure to 0 PSI. Open bleed
valve slowly to bleed off residual pressure
remaining in actuator.
e. Remove brake actuator (40) from test bench.
(1) Remove hose (41) from nipple (8).
(a) Hold nipple (8). Remove nut (42).
(2) Remove hose (43) from valve (10).
(a) Hold tube reducer (44). Remove nut (45).
(b) Hold valve (10). Remove tube reducer
(44).
(3) Close bleed valve (10). Torque to 40 INCH-
POUNDS. Use torque wrench.
(4) Install screw (12) and washer (13) in valve
(10).
(5) Remove brake disk test segment (46) from
friction lining (30).
(6) Remove two NAS 149-68 bolts (47), four
MS20002C9 washers (48), and two HS
4143-7 nuts (49) from actuator (40).
f. Inspect (QA).
END OF TASK
M04-3771-22A
8
40
41
42
12
13
10
44
43
46
45
30
M04-3771-27
48
49
47
40
48
