TM 1-1520-238-23
Change 5
1-113
1.35.
HYDRAULIC SYSTEM BLEED – continued
WARNING
To prevent injury, make certain all per-
sonnel are clear of flight controls be-
fore moving pilot controls. If injury
occurs, seek medical aid.
CAUTION
The hydraulic system operates at high
pressure. To prevent the release of pres-
surized hydraulic fluid, do not use the
RTR BK switch LOCK position during
this task.
NOTE
The helicopter intercommunication sys-
tem may be used to coordinate mainte-
nance.
r. Adjust AGPU output pressure to 250 psi
(TM 55-1730-229-12). Do not exceed 400 psi.
s. Install bleeder hose (35) in aft bleed valve (36).
(1) Hold valve (36). Remove screw (37).
(2) Install bleeder hose (35) in valve (36). Use
bleeder tube.
(3) Place free end of hose (35) in pail.
t. Bleed aft rotor brake actuator (38).
(1) Set RTR BK switch (33) to BRAKE.
(2) Open bleed valve (36).
(3) Bleed actuator (38) until fluid is free of air
bubbles.
(4) Close bleed valve (36).
(5) Set RTR BK switch (33) to OFF.
GO TO NEXT PAGE
37
36
36
35
M04-1611-3A
PAIL
VIEW LOOKING DOWN
OFF
LOCK
BRAKE
OFF
BRAKE
LOCK
33
33
M04-1611-5A
36
38
PAIL
