TM 1-1520-238-23
Change 1
6-287
6.65.
MAIN TRANSMISSION ROTOR BRAKE ACTUATOR (PARKER HANNIFIN)
REMOVAL/INSTALLATION – continued
6.65.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. On ELEC PWR panel (1), set BATT/EXT PWR
switch (2) to BATT.
c. On power quadrant (3), set RTR BK switch (4)
to OFF.
d. On EMERG HYD panel (5), set EMERG HYD
switch (6) to EMERG HYD.
CAUTION
To prevent damage to shear pin activated
decoupler (SPAD) shear pin in BUCS ac-
tivated aircraft, do not force directional
pedals and cyclic or collective sticks
against any resistance.
e. Cycle flight controls until UTIL ACC pressure
gage (7) reads ZERO PSI.
f. On ELEC PWR panel (1), set BATT/EXT PWR
switch (2) to OFF.
g. On pilot center circuit breaker panel (8), open
EMERG HYD (9) and RTR BRK (10) circuit
breakers.
h. Disconnect battery (para 9.40).
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M04-3876-2A
2
1
4
3
BATT
EXT PWR
6
5
7
M04-3876-3
CENTER CIRCUIT BREAKER PANEL
9
8
10
