TM 55-1520-240-23-6
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EXTENSIBLE LINK ACTUATOR CYLINDER FUNCTIONAL TEST (AVIM)
(Continued)
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TEST 9
EXTERNAL STATIC LEAK TEST
127.
Perform steps 1 thru 35. Check initial control and
valve settings in steps 20 and 21.
128.
Set 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 PRESS.
e.
LOW PRESS REGULATOR valve (41) toward
INCREASE until LOW PRESS gauge (58)
indicates 60 psi.
f.
Slowly turn RETURN BACK PRESS valve
(40) slowly to OPEN.
129.
Observe piston (9) for 5 minutes. Check for
wetting of external seals. Wetting shall not form
more than 1 drop.
130.
Set electrical and hydraulic unit controls as
follows:
a.
LOW PRESS REGULATOR valve (41) to
DECREASE.
b.
RETURN BACK PRESS valve (40) to
CLOSE.
c.
SOLENOID valve (50) to CLOSED.
d.
SOLENOID SHUTOFF switch (35) to
CLOSED.
e.
RETURN SYS 1 valve (42) to RETURN and
then to OFF.
f.
POWER switch (20) to OFF.
END STATIC LEAK TEST
131.
Disconnect cable 145G5278-5 (22) from AFCS
1 receptacle (18) and extensible link receptacle
(19). Stow cable in cover.
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