TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
TEST 14
VALVE JAM INDICATOR TEST (ALL)
220.
Perform steps 1 thru 40. Check initial control and
valve setting in steps 22 and 23.
221.
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) at OPEN.
e.
Slowly turn HIGH PRESS REGULATOR
valve (52) toward INCREASE until HIGH
PRESS gauge (13) indicates 1500 psi.
f.
SAS PRESS SYS 1 valve (3) and SAS
PRESS SYS 2 valve (4) to PRESS.
222.
Set ILCA PRESS SYS 1 valve (1) to PRESS.
223.
Slowly turn HIGH PRESS SHUTOFF valve (51)
to OPEN.
224.
Turn HIGH PRESS SHUTOFF valve (51) to
CLOSE.
225.
Set ILCA PRESS SYS 1 valve (1) to VENT.
226.
Repeat steps 220 thru 224 three times. Jam
indicator button (78) shall remain flush with valve
(79) body.
227.
Set ILCA PRESS SYS 1 valve (1) to PRESS.
228.
Slowly turn HIGH PRESS SHUTOFF valve (51)
to OPEN.
7-452
Change 1
