TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
TEST 6
MANUAL CYCLING TEST (ALL)
60.
Perform steps 1 thru 40. Check initial control and
valve settings in steps 22 and 23.
61.
Set electrical unit as follows:
a.
Power switch (29) ON.
b.
SOLENOID SHUTOFF switch (44) to OPEN.
61.1. Set hydraulic unit controls as follows:
a.
Check RETURN SHUTOFF valve (47) is fully
OPEN.
b.
RETURN SYS 1 valve (5) to RETURN.
c.
RETURN SYS 2 valve (6) to RETURN.
d.
SOLENOID VALVE (53) to OPEN.
e.
Slowly turn HIGH PRESS REGULATOR
valve (52) towards INCREASE until HIGH
PRESS gauge (13) indicates 1500 psi.
f.
ILCA PRESS SYS 1 and SYS 2 valve (1 and
2) to PRESS.
g.
Slowly turn HIGH PRESS SHUTOFF valve
(51) to OPEN.
62.
Manually move input arm (61) through full cycle.
Check for the following:
a.
No leakage from relief valve (62) on No. 1
or No. 2 system.
NOTE
If relief valve leaks perform Test 16
(Task 7-98).
b.
No binding throughout full stroke of input arm
(61).
NOTE
If binding is felt, ship ILCA to next
level of maintenance.
c.
No static leakage.
NOTE
If leakage is present, record location
and rate and perform Tests 12, 13, 15,
17, and 18 (Task 7-98).
Change 1
7-423
