TM 55-1520-240-23-6
7-135
UTILITY HYDRAULIC SYSTEM
(Continued)
7-135
Cargo Hook Release System
The cargo hook hydraulic release system directs
hydraulic power to release the center cargo hook. The
system consists of a hook release valve and cargo
hook actuating cylinder. The hook release valve is
located in the tunnel above the cabin at sta. 334. It is
a solenoid-operated three-way valve. When the valve
is de-energized, fluid pressure is cutoff to the system.
When the valve is energized fluid pressure is directed to
the hook actuating cylinder which opens the hook. The
check valve in the return line prevents loss of system
fluid in the utility system if a line to the cargo hook is
broken.
Power Steering System
Refer to Task 7-290.
Swivel Lock System
Refer to Task 7-290.
Cargo Hoist System
Refer to Task 14-1.
7-619
