TM 55-1520-240-23-9
11-40
RIGGING CHECK OF FORWARD AND AFT LONGITUDINAL CYCLIC TRIM
ACTUATORS
(Continued)
11-40
1.
Set CYCLIC TRIM switch (1) on AFCS panel (2)
to MANUAL.
2.
Set FWD CYCLIC TRIM switch (3) on AFCS
panel (2) to RET. Release when trim indicator
(4) indicates 60 knots.
3.
Set AFT CYCLIC TRIM switch (5) on AFCS
panel (2) to RET. Release when trim indicator
(6) indicates 60 knots.
3.1.
Working from forward left work platform, measure
and record exposed portion of cyclic trim actuator
piston between washer (8) and nut (9).
3.2.
Working from aft left work platform, measure and
record exposed portion of cyclic trim actuator
piston between washer (11) and nut (12).
4.
Have helper in cockpit set FWD switch (3) to
EXT. Indicator (4) must indicate 150 knots.
5.
Working from forward left work platform, check
forward actuator (7). Actuator must extend the
measurement from step 3.1 plus 0.873 to 0.903
inch, measure between washer (8) and nut (9).
INSPECT
6.
Have helper in cockpit set AFT switch (5) to EXT.
Indicator (6) must indicate 150 knots.
7.
Working from aft left work platform, check
aft actuator (10). Actuator must extend the
measurement from step 3.2 plus 1.223 to 1.253
inches, measure between washer (11) and nut
(12).
INSPECT
8.
Set CYCLIC TRIM switch (1) to AUTO. Forward
actuator (7) and aft actuator (10) must be in their
ground position. Check that indicators (4 and 6)
are in the GND position.
INSPECT
FOLLOW-ON MAINTENANCE:
Close forward and aft left work platforms (Task 2-2).
END OF TASK
11-156
