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 TM 55-1905-242-14
0007 00
FIRE PUMP SYSTEM
General
The LCM-8 Mod 2 is provided with a centrifugal fire pump that supplies raw water to a fire monitor mounted on the starboard
wing wall. The fire pump is also used to fill the bow ballast tank. The pump is driven by the diesel generator through an
electric clutch which allows the pump to be disengaged when not in use. Control for the electric clutch is via a switch located
in the pilothouse console.
The fire pump system is composed of a fire pump, electric clutch, suction valve, suction strainer, pressure relief valve,
ballast valve, fire monitor valve, fire monitor, and nozzle.
TO FIRE MONITOR
FIRE MONITOR
TO BOW
VALVE
BALLAST
TANK
BALLAST
VALVE
PRESSURE
RELIEF
VALVE
SUCTION
VALVE
SUCTION
STRAINER
FIRE PUMP
FIRE PUMP SYSTEM SCHEMATIC
Fire Pump
A 3-inch horizontal split case centrifugal pump is used to pump water through this system. The pump is driven by the diesel
generator engine, draws suction from the sea chest at bulkhead 31 starboard, and discharges to the bow ballast tank or to the
fire monitor.
Electric Clutch
An electric clutch is installed in the drive shaft between the diesel generator engine and the fire pump. This clutch allows the
pump to be disengaged when not needed. The clutch is controlled by a switch located in the pilothouse console. When the
switch is closed (ON), the clutch is engaged, and when the switch is open (OFF), the clutch is disengaged. Because of the
horsepower requirements of the fire pump, the diesel generator must be running in a "no-load" condition during pumping
operations.
0007 00-4
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