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 TM 55-1905-221-14-1
1-21.
HYDRAULIC RAMP HOIST.
a. The ramp hoisting arrangement consists of a hoisting cable deadened to one side of the craft, running through
fairlead sheaves through the ramp and to a winch on the opposite side. The winch is on the port side.
b. Winches are powered by hydra lic motors. Other system components include a four way control valve,
u
counterbalance valve, two engine driven pumps, two check valves, suction line strainers, and return line filters.
See figure 1-11 for the ramp system diagram.
c. Emergency lowering of the ramp is accomplished by a manual brake release. Two chain hoists are stored in the
lazarette to be used for emergency lifting of the ramp. See figure 1-12.
1-22.
BILGE PUMP AND OIL/WATER SEPARATOR SYSTEM.
a. Each landing craft is equipped with a oil/water separator (electrically driven) and three bilge pumps. The
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oil/water separator is located against the engine room port side bulkhead. Two of the bilge pumps are belt-driven
from the inboard engine of the port propulsion unit and the other pump is belt-driven from the inboard engine of
the starboard propulsion unit.
1-50
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