TM 1-1520-238-T-5
7–18
7–6.
CONTROLS AND INDICATORS (cont)
7–6
Table 7–1.
Hydraulic and Pneumatic Systems Controls and Indicators (cont)
Pilot Power Quadrant
SWITCH/INDICATOR
POSITION
FUNCTION
RTR BK toggle switch
OFF
Releases rotor brake hydraulic pressure.
BRAKE
Applies utility system pressure regulated to 337 psi to
stop rotor brake disc on main transmission.
LOCK
Locks rotor brake by trapping 3000 psi pressure between
manifold and rotor brake actuator.
M68-148
RTR BK SWITCH
Pilot Power Quadrant
