TM 55-1520-240-23-6
7-98
TEST PITCH, ROLL, YAW, OR THRUST INTEGRATED LOWER CONTROL ACTUATOR
(ILCA) (AVIM) (Continued)
7-98
24.
Apply test stand hydraulic pressure of 1500 psi.
25.
Set electrical unit controls as follows:
a.
Power switch (29) to ON.
b.
SOLENOID SHUTOFF switch (44) to OPEN.
26.
Set hydraulic unit controls as follows:
a.
Check that RETURN SHUTOFF VALVE (47)
is fully OPEN.
b.
Set SOLENOID VALVE (53) to OPEN.
c.
Both SAS SYS 1 valve (3) and SAS SYS 2
valve (4) to PRESS.
d.
Both ILCA SYS 1 valve (1) and ILCA SYS 2
valve (2) to PRESS.
e.
Both RETURN SYS 1 (5) and RETURN SYS
2 (6) valves to RETURN.
27.
Slowly turn HIGH PRESSURE REGULATOR
valve (52) toward INCREASE until HIGH PRESS
gauge (13) indicates 100 to 150 psi.
28.
Remove lockwire from No. 1 extensible link (54)
bleed cap (55).
29.
Crack HIGH PRESS SHUTOFF valve (51) to limit
flow for bleeding of air.
30.
Loosen cap (55). Bleed until fluid is air-free.
Use cloths (E135) to remove spilled fluid. Wear
gloves (E184.1).
31.
Tighten cap (55). Use cloths (E135) to remove
spilled fluid. Wear gloves (E184.1).
32.
Remove lockwire from bleed cap (56) of No. 2
extensible link (28).
33.
Loosen cap (56). Bleed until fluid is air-free.
Use cloths (E135) to remove spilled fluid. Wear
gloves (E184.1).
34.
Tighten cap (56). Use cloths (E135) to remove
spilled fluid. Wear gloves (E184.1).
35.
Slowly turn HIGH PRESSURE REGULATOR
valve (52) toward INCREASE until HIGH PRESS
gauge (13) indicates 1500 psi.
7-410
Change 1
