TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
TEST 15
CASE CAVITY LEAKAGE TEST (ALL)
258.
Perform steps 1 thru 40. Check initial control and
valve setting in steps 22 and 23.
259.
Set electrical and hydraulic unit controls as
follows:
a.
Check RETURN SHUTOFF VALVE (47) is
OPEN.
b.
RETURN SYS 1 valve (5) and RETURN SYS
2 valve (6) to RETURN.
c.
SOLENOID valve (53) to OPENED.
d.
SOLENOID SHUTOFF switch (44) to OPEN.
e.
Slowly turn HIGH PRESS REGULATOR (52)
toward INCREASE until HIGH PRESS gauge
(13) indicates 1500 psi.
f.
ILCA PRESS SYS 1 valve (1) and ILCA
PRESS SYS 2 valve (2) to PRESS.
g.
Slowly turn HIGH PRESS SHUTOFF valve
(51) to OPEN.
260.
Manually set input arm (61) at mid position.
261.
Install PIN 2 (69) in input arm (61).
262.
Set electrical and hydraulic unit controls as
follows:
a.
HIGH PRESS SHUTOFF valve (51) to
CLOSE.
b.
ILCA PRESS SYS 1 valve (1) and ILCA
PRESS SYS 2 valve (2) to VENT.
c.
HIGH PRESS REGULATOR valve (52) to
DECREASE.
d.
SOLENOID SHUTOFF switch (44) to CLOSE.
e.
SOLENOID valve (53) to CLOSED.
7-456
Change 1
