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 TM 55-1905-223-10
replenishes the hydraulic oil storage tank and supplies hydraulic oil to supply points in the following
compartments; boatswain storeroom, bowthruster room and steering gear room. The supply points
provide hydraulic oil for the following:
a. Boatswain Storeroom. Bow ramp winch hydraulic power pack and starboard bow anchor
windlass hydraulic power pack.
b. Bowthruster Room. Port bow anchor windlass hydraulic power pack and bowthruster
hydraulic power pack.
c.
Steering Gear Room. Port side: steering gear hydraulic power pack and starboard side,
Stern side: anchor winch hydraulic power pack.
Supply points are replenished by pressurizing the supply line with the hand pump and filling containers at
the supply points.
1-38. Fuel Oil Transfer Piping System. The fuel oil transfer piping system replenishes the ship's fuel oil
tanks for deck discharge/fill connections and replenishes engine and generator day tanks by transferring
fuel oil from storage tanks. System control is maintained through a combination of valves as shown in
FIGURE 1-47. Fuel oil can be transferred between any storage tank and day tank. No. 1 fuel oil transfer
pump is supplied power from the auxiliary machinery motor control center and controlled by a START/
STOP pushbutton and an emergency STOP switch at the pump. No. 2 fuel oil transfer pump is supplied
power from the emergency switchboard 240 Vac distribution and controlled by a START/STOP push-
button and an emergency stop pushbutton. Each pump has a run indicator lamp on the engine room
operating station console.
NOTE
Not applicable to vessels with FM-200 Fire Suppressant System installed.
Reference paragraph 2-46 through 2-47 for FM-200 and Water Washdown
System operation. Reference TM 55-1905-243-24&P, LCU-2000, FM-200
Fire Fighting System for maintenance and installation of FM-200 components.
Each pump also will be shut down upon any HALON pressure switch activation. Fuel oil purification is
provided by the fuel oil filter/separator. Included in the fuel oil transfer piping system is dual fuel filters for
each main engine. In an emergency, fuel may be transferred by the hand pump.
1-39. Compressed Air Piping System. The compressed air piping system delivers the air pressure
required for starting the main engines, No. 2 SSDG (port), and other uses. System control is maintained
through a combination of valves as shown in FIGURE 1-48. The compressed air piping system consists
of two compressors that deliver compressed air to two 200 gallon air receivers at 200 pounds per square
inch (psi) pressure. This air passes through a reducing valve, reducing the pressure to control air
pressure of 125 psi, moisture separator and an automatic dryer to points of usage. Supply air is furnished
to sea chest blow down. Service air is supplied to the machine shop, bowthruster room and above deck
points. Control air is supplied to the dual throttle control system. Air pressure is controlled from individual
compressor pressure switches. Compressor power is supplied by the auxiliary machinery motor control
center with pushbutton START/STOP stations located at each compressor. Each compressor has a run
indicator lamp on the engine room control console.
Change 10
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