TM 1-1520-238-23
6-296.8
Change 2
6.67A.
MAIN TRANSMISSION ROTOR BRAKE ACTUATOR (PARKER-HANNIFIN)
DISASSEMBLY/ASSEMBLY (AVIM) – continued
CAUTION
Do not roll packing into cylinder pack-
ing groove during installation. Rolling
will result in pinching of packing when
piston is installed in cylinder. Pinched
packing will result in hydraulic fluid
leakage.
Do not use uncontrolled or excessive
force on piston. Piston damage can
result.
To prevent damage to rotor brake ac-
tuator, ensure that tension washers
are installed in stacked pairs so that
only outer concave surfaces of each
washer pair will contact each other.
b. Install piston (23) in cylinder (1).
(1) Lubricate and install new packing (29) in cyl-
inder (1) groove. Use grease (item 85,
App F).
(2) Apply a liberal amount of hydraulic fluid to
piston bore (33) in cylinder (1). Use hydraulic
fluid (item 92, App F).
(3) Apply a liberal amount of hydraulic fluid to
packing (32) and to large diameter (34) on
piston (23). Use hydraulic fluid (item 92,
App F).
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M04-3771-4
1
29
23
M04-3771-17
23
1
34
32
33
