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 TM 55-1905-223-24-16
(6)
Hydraulic valve assembly.
(a) This valve functions as a deceleration control and serves as a safety device. It locks the load in case of
hydraulic line breakage, or in the event of (accidental or unauthorized) operation of winch controls when hydraulic power
pack assembly is shut down.
(b) Pilot pressure setting of the valve makes sure that enough pilot pressure is available to keep the
automatic failsafe brake released during winch operation.
(7)
Clutch. Manually operated lever that engages the spool for payout or haulback operation.
(8)
Brake. Used to brake the spool during operation. Manually operated.
(9)
Hydraulic Motor Assembly.
Provides the gear reduction between the spool and the hydraulic motor
assembly.
(10) Cathead. Used for hauling, independent of the anchor operation.
(11) Dog and dog lever. Lever-operated dog manually activates the locking device for the spool.
b. Hydraulic Power Pack Assembly.
(1) Alternating current motor.
This constant-speed, alternating current motor drives the vane-type hydraulic
pump through a coupling adapter.
(2)
Coupling-adapter. Couples alternating current motor mechanical output to vane-type hydraulic pump.
(3)
Hydraulic pump. During operation, the pump supplies fluid under high pressure to the directional control
valve.
(4)
Directional control valve.
(a)
Output ports A and B connect to the hydraulic motor assembly/failsafe brake.
(b) Provides payout, haulback and neutral operation of winch. Under noload conditions, fluid is circulated
through the reservoir.
(5)
Filler cap/breather. Provides access to fill reservoir with hydraulic fluid and also acts as a breather for the
reservoir.
(6)
Pressure gauge. Indicates operating hydraulic pressure within the system.
(7)
Level sight gauge. Indicates level of fluid within the reservoir.
(8)
End covers. Provide for access inside the reservoir.
(9)
Inlet strainer. Traps impurities inside reservoir before hydraulic fluid reaches directional control valve.
1-5
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