REPLACE LONGITUDINAL CYCLIC TRIM (LCT) ACTUATOR VARIABLE RESISTOR
Do not use the RX1 scale on
ohmmeter. Excessive current will
Check resistance between pins 2 and 3 of
resistor. Use ohmmeter. Rotate resistor slightly
counterclockwise until 0 to 20 ohms maximum
If resistor is rotated fully
counterclockwise, resistance should
be 3.020 to 3.220 ohms.
Install shim washer (3) on support (2).
Install resistor (9) with support (2) in actuator
housing. Make sure ends of spring (6) fit in slots
at bottom of cavity.
Secure resistor support (2) with screws (4) and
Check resistance per step 15. If required, loosen
screws (4) to rotate resistor (9) with support (2)
to obtain 0 to 20 ohms maximum indication.
Lockwire screws (4). Use lockwire (E227) and
insulating sleeve (E204). Position sleeve on
twisted lockwire between the two screws.
Epoxy primer (E292) is flammable
and toxic. It can irritate skin and
cause burns. Use only with adequate
ventilation, away from heat and
open flame. Avoid contact with skin,
eyes, or clothing. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
Coat thread of cover (1) with epoxy primer
(E292). Wear gloves (E184.1) and goggles.
Install cover while primer is wet. Lockwire cover.
Use lockwire (E227).
Install forward/aft LCT actuator on aircraft (Tasks
11-206 and 11-221).
Perform LCT actuator portion of AFCS operational
check (TM 55-1520-240-T).
END OF TASK