TM 55-1680-320-23&P
Section II. EQUIPMENT DESCRIPTION AND DATA
1-6. Equipment Characteristics, Capabilities, and Features.
a. Characteristics.
. Personnel rescue work
. Electrically powered with standard 28 vdc
. Helicopter mounted (all UH1 and UH-60 series helicopters)
. Built in limit switches regulate cable extension and retraction to prevent malfunction
. Motor equipped with thermal protector to prevent operation if overheating
. Quick disconnect adapters allow for easy installation and removal
. Height and length adjusters for installation in all UH1 helicopters
b. Capabilities and Features.
. 600 pound rated load (272.4 kg)
. 1,800 pound limited load (817.2 kg)
. 250 ft./min. (762 dm/min.) cable speed with 300 lb. load (136.2 kg)
. 250 ft. of useable cable
. Operation controlled by pilot or hoist operator with hand held control pendant
1-7. Location and Description of Major Components (Figure 1-1).
A BOOMHEAD ASSEMBLY. Installed boomhead is designed to swivel 120 degrees about the boom cable axis,
60 degrees either side of center, to provide maximum flexibility.
B WINCH ASSEMBLY. Operates winding of cable assembly. Limit switches regulate rate, speed and length of
operation.
C CONTROL PANEL ASSEMBLY. Provides electrical interface between the hoist, control pendant and input
power supply. Contains operational PC boards.
D BOOM POSITION SUPPORT ASSEMBLY. Contains the boom position actuator, upper and lower support
assemblies, flexible wiring harness and microswitches.
E CONTROL PENDANT. Contains BOOM IN/OUT and CABLE UP/DOWN switches, as well as a variable speed
control to allow hand held hoist operation.
F CABLE HOOK ASSEMBLY. Secures various rescue equipment to the hoist cable.
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