TM 55-1520-240-23-6
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EXTENSIBLE LINK ACTUATOR CYLINDER FUNCTIONAL TEST (AVIM)
(Continued)
7-97
85.
Check for pressure damage. There shall be no
visual damage.
86.
Set electrical and hydraulic unit controls as
follows:
a.
HIGH PRESS REGULATOR valve (49) to
DECREASE.
b.
HIGH PRESS SHUTOFF valve (48) to
CLOSE.
c.
SOLENOID SHUTOFF switch (35) to
CLOSED.
d.
SOLENOID valve (50) to CLOSED.
e.
AFCS PRESS SYS 1 valve (44) to VENT.
f.
Push and hold HIGH PRESS RELIEF valve
(53) and LOW PRESS RELIEF valve (54)
for 15 seconds.
g.
AFCS PRESS SYS 1 valve (44) to OFF.
h.
RETURN SYS 1 valve (42) to OFF.
87.
Set LINK TEST switch (29) to VALVE.
88.
Reduce test stand pressure to 1500 psi.
89.
If no further testing is required, perform normal
shutdown (TM 55-4920-428-13).
END OF PROOF PRESSURE TEST
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