| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-242-14
0007 00
Discharge Valve
Two discharge valves, one above each pump, are installed in the system. The discharge valves prevent an operating pump's
discharge flow from backfeeding into an idle pump. When only one pump is operating, the discharge valve on the operating
pump is open, and the discharge valve on the idle pump is closed.
Compartment Suction Valve
Ten compartment suction valves are connected to the bilge manifold. These valves allow the operator to select which
compartment(s) will be pumped. Each of the six watertight voids has a valve, as does the engine room. The bow ballast tank
has three suction pipes, and thus three valves, to allow for rapid dewatering of this tank. During pumping operations, the
valves for "wet" compartments are opened and the valves for "dry" compartments remain closed.
Pump Suction Valve
Two pump suction valves, one below each pump, are installed in the system. The pump suction valves prevent an operating
pump's suction from drawing through an idle pump. When only one pump is operating, the pump suction valve is open for
the operating pump and closed for the idle pump.
Swing Check Valve
A single swing check valve is installed near the pumps' overboard discharge fitting aft of bulkhead 31, port. The swing
check valve permits free discharge flow, while preventing raw water from entering the vessel through the overboard dis-
charge fitting.
Bilge Strainer
Each of the six watertight voids and the engine room has a bilge strainer installed at the end of the bilge pump suction piping.
The bilge strainers prevent debris from being drawn into the suction piping where it might foul the piping or damage the
bilge pumps.
Priming Connection
Each bilge pump has a priming connection hard piped into its suction side piping. This priming connection allows the bilge
pump system to be primed by the propulsion engine's raw water pump. A valve, inline between the raw water pump and the
priming connection, controls the flow of raw water into the priming connection. When the pump is being primed, this valve
is open. When the system has been primed and pumping is underway, the valve is closed.
OILY WATER COLLECTION AND PUMPING SYSTEM
General
The LCM-8 Mod 2 is equipped with an oily water collection and pumping system. The system is used for pumping oily
water from the bilge spaces, for changing lube oil in the engines, and for drawing oily waste from buckets. The oily waste
collected by this system is stored in a holding tank until it can be safely discharged to an appropriate treatment facility. The
system is composed of a waste oil pump, a waste oil tank, suction strainer, suction valves, discharge valves, a sight glass, and
a vent.
Waste Oil Pump
The waste oil pump is used to pump oil and oily waste within the oily water collection and pumping system. Depending
upon the alignment of the various suction and discharge valves, the waste oil pump can draw oil or oily water from the bilges,
from the engines and transmissions, from buckets, and from the waste oil tank. The waste oil pump can discharge to the
waste oil tank or to an appropriate treatment facility.
Waste Oil Tank
A 150-gallon waste oil tanks holds waste oil and oily water until it can be discharged to an appropriate treatment facility.
The tank is filled by the waste oil pump and is equipped with two removable cleanout plates and a sight glass.
0007 00-2
|
||
|
||
