TM 55-1520-240-T
16-1.4 EXTERNAL CARGO HOOK SYSTEM OPERATIONAL CHECK (Continued)
16-1.4
TASK
RESULT
25. Set MASTER switch (1) to RESET then
to OFF.
26. Connect forward cargo hook connector
DUAL HOOK FAULT capsule (14) shall go out.
(20) to fuselage receptacle.
27. Disconnect aft cargo hook connector
DUAL HOOK FAULT capsule (14) shall come on.
(20).
If it does not, replace emergency hook release
relay box.
28. Connect aft cargo hook connector (20)
DUAL HOOK FAULT capsule (14) shall go out.
to fuselage receptacle.
29. Set MASTER switch (1) to ARM.
30. Suspend one 20-25 pound load to each
load beam (23) on forward and aft cargo
hooks.
31. Press and release pilot's CARGO HOOK
Forward cargo hook shall open and drop load then
RELEASE switch (21).
relatch closed. FWD HOOK OPEN capsule (11) shall
come on. Pilot and copilot master caution lights (24)
NOTE
shall come on. If forward cargo hook does not open
If CARGO HOOK RELEASE switch is
will go to task 16-1.21. If hook opens and FWD HOOK
held pressed, a hammering sound
OPEN capsule does not come on, go to task 16-1.22.
be heard from forward cargo hook.
32. Set MASTER switch (1) to RESET, then
Forward cargo hook shall stay closed. FWD HOOK
to ARM.
OPEN capsule (11) shall go out. Pilot and copilot
master caution lights (24) shall go out. If capsule
is still lit, go to task 16-1.11. If lights (24) are still
lit, replace master caution panel.
33. Suspend one 20-25 pound load to load
beam (23) on forward cargo hook.
GO TO NEXT PAGE
Change 9 16-13
