TM 1-1520-238-T-7
11–111
11–12. FLIGHT CONTROL SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
11–12
Task
Result
c. On pilot center circuit breaker panel
(fig. 11–46), check that TRIM circuit breaker
is closed. On pilot cyclic stick (fig. 11–51),
set FORCE TRIM switch to OFF. Move pilot
cyclic stick full forward and aft. Cyclic stick
should move freely and full travel.
If cyclic stick does not travel full forward and aft to the
respective stop, go to paragraph 11–20.
If force trim does not disengage, go to
paragraph 11–14.
If binding or chattering occurs, replace longitudinal
(pitch) magnetic brake (TM 1-1520-238-23).
d. Move pilot cyclic stick full left and right.
Cyclic stick should move freely and have full
travel.
If cyclic does not travel full left and right to the
respective stop, go to paragraph 11–21.
If binding or chattering occurs, replace lateral (roll)
magnetic brake (TM 1-1520-238-23).
e. Move pilot left directional pedal (fig. 11–58)
full forward. Move pilot right directional
pedal full forward. Directional pedals should
move freely and have full travel.
If left or right directional pedal does not travel full
forward to its stop, go to paragraph 11–22.
If binding or chattering occurs, replace directional
(yaw) magnetic brake (TM 1-1520-238-23).
M70-132
RIGHT PEDAL
LEFT PEDAL
Figure 11–58.
Pilot Directional Pedals
f. Place pilot cyclic stick in center neutral
position. Set pilot cyclic stick FORCE TRIM
switch to ON.
If force trim does not engage, go to paragraph 11–15.
g. Move pilot cyclic stick forward until it
contacts forward stops. Allow cyclic stick to
slowly return to center neutral position.
If cyclic stick does not return to center neutral
position, replace longitudinal (pitch) feel spring
cartridge (TM 1-1520-238-23).
h. Move pilot cyclic stick aft until it contacts aft
stop. Allow cyclic stick to slowly return to
center neutral position.
If cyclic stick does not return to center neutral
position, replace longitudinal (pitch) feel spring
cartridge (TM 1-1520-238-23).
