TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
326.
Set SAS 2 FUNCTION SELECT switch (31) to
SQ WAVE.
327.
Set SAS 2 SQ WAVE control (37) to MIN.
328.
Set SAS PRESS SYS 2 valve (4) to PRESS.
329.
Slowly turn SAS 2 SQ WAVE control (37) toward
MAX until indicator (9) indicates about 0.30 inch
travel.
329.1. Allow link to complete 50 cycles minimum.
Check for 1 drop per 50 cycles at the extensible
link output seal.
NOTE
If leakage exceeds 1 drop in 50
cycles, replace seals or extensible
link.
330.
Set SAS 2 FUNCTION SELECT switch (31) to
CLSD loop.
331.
Set SAS PRESS SYS 2 valve (4) to VENT, then
OFF.
332.
Remove PIN 2 (69) from arm (61) and stow.
333.
Unstow cycle motor linkage (64). Position linkage
in input arm (61).
334.
Remove PIN 1 (65) from stowage. Install PIN 1
(65) in arm (61) and linkage (64).
NOTE
Bring cycle motor arm bearing into
alignment with input arm from above.
335.
Remove and stow indicator (9), PIN 3 (73), and
bearing (75).
336.
Set SAS PRESS SYS 1 valve (3) and SAS
PRESS SYS 2 valve (4) to PRESS.
337.
Set SAS 1 FUNCTION SELECT switch (30) and
SAS 2 FUNCTION SELECT switch (31) to SQ
WAVE.
338.
Press CYCLE MOTOR switch (45) ON. Run cycle
motor for 15 minutes. Then run it for 50 cycles.
NOTE
Motor runs at about 20 cycles per
minute. 50 cycles take about 2.5
minutes.
339.
Check actuator (11) for leaks. Dynamic seals
shall not exceed 1 drop in 50 cycles. There
shall be no leaks at static seals or relief valves.
NOTE
If leakage exceeds 1 drop in 50
cycles, replace seals.
7-466
Change 1
