TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
TEST 20
CENTERING SPRING TEST
372.
Perform steps 1 thru 40.
373.
POWER switch (28) to ON.
374.
Set LINK TEST switch (29) to SELF FDBK.
375.
Set electrical and hydraulic unit controls as
follows:
a.
Check RETURN SHUTOFF valve (38) is
OPEN.
b.
SOLENOID valve (50) to OPENED.
c.
SOLENOID SHUTOFF switch (35) to OPEN.
d.
RETURN SYS 1 valve (42) to RETURN.
e.
Slowly turn HIGH PRESS regulator valve
(49) towards INCREASE until HIGH PRESS
gauge (51) indicates 1500 psi.
f.
Slowly turn HIGH PRESS SHUTOFF valve
(48) to OPEN.
376.
Set VALVE CONTROL (25) to EXTEND.
377.
SAS PRESS SYS 1 valve (44) to PRESS.
378.
Set SAS PRESS SYS 1 valve (44) to OFF. Piston
shall return to center position within 1 second.
Change 1
7-472.1