TM 55-1520-240-23-10
16-7.1.1
TEST CENTER CARGO HOOK (AVIM)
(Continued)
16-7.1.1
NORMAL LOAD RELEASE TEST
4.
Attach 20-pound weight (6) to hook (4). Raise
hoist (2) until weight clears ground.
5.
Connect hydraulic test stand (7) to hose (8).
6.
Connect multimeter (9) to pins C and D of
connector (10). Set scale to RX 1.
7.
Slowly apply 3,000 psi hydraulic pressure.
Hook (4) shall open and weight (6) shall drop.
Multimeter shall indicate 0 ohm.
a.
If hook (4) does not open, replace cylinder
(5) (Tasks 16-5 and 16-7 without 35 , 16-5.1
and 16-7.1 with 35 ).
b.
If multimeter does not indicate 0 ohm, adjust
switch S3 (11) (Task 16-7.2).
8.
Remove hydraulic pressure. Hook (4) shall close.
Multimeter (9) shall indicate infinity.
a.
If hook (4) does not close, replace cylinder
(5) (Tasks 16-5 and 16-7 without 35 , 16-5.1
and 16-7.1 with 35 ).
b.
If multimeter (9) does not indicate infinity,
replace switch 83 (11) (Tasks 16-5 and 16-7
without 35 , 16-5.1 and 16-7.1 with 35 ).
9.
Disconnect hydraulic test stand (7) from hose (8).
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