16-1.3 EXTERNAL CARGO HOOK SYSTEM VISUAL CHECK
Aircraft Mechanic's Tool Kit.
Electrical Power Off
Hydraulic Power Off
Center Cargo Hook Access Panel Open
Center Cargo Hook Unstowed
67U20 Medium Helicopter Repairer
Center Tunnel Cover Open
Check forward cargo hook (1).
If load beam (2) is open, close it. If it does not stay
closed check rigging of tandem hook release rig-
ging. Adjust as required (TM 55-1520-240-23). If
rigging is okay and load beam is still open, replace
cargo hook. If control assembly (3) is damaged, re-
place it. If keeper (4) is damaged, replace it. If wire
harness (5) is damaged replace it. If window (6) is
Repeat step (1) for aft cargo hook (7).
damaged, replace it.
Check center cargo hook (8).
If hook (9) is open, close it. If it does not stay
closed service cargo hook actuator and check
manual release cams (TM 55-1520-240-23). If
hook still can not be closed, replace cargo hook
(8). If keeper (10) is forward of hook (9) or
damaged, adjust or replace it. If release
mechanism (11) is damaged, replace it. If wire
harness or hydraulic hose (12 or 13) is damaged.
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