Bilge pump suction valves

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Figure 2-7. Fuel System Valves.

TM-55-1905-221-14-1 Landing Craft Mechanized Steel DED Overall Length 74 Feet Mod 1 Mark VIII Navy Design LCM-8 Manual

Figure 2-9. Bilge Drainage System (Sheet 1 of 2).

TM 55-1905-221-14-1

(9) The bilge pump prime valves are located in the prime lines between the sea water system and the three bilge

pumps. The valves must be opened before bilge pump clutch is engaged.

NOTE

Bilge pump suction valves are wired closed during all river operation.

(10) The bilge pump suction valves are located in the suction line to each of the three bilge pumps (two port and

one starboard). See figure 2-9. Open valves to pump water out of the bilge compartments only while at sea.

(11) Belt driven, clutch engaged, bilge pumps are installed in all LCM-8's. As shown in figure 2-9 (sheet 1), two

pumps are driven by the port inboard engine and one pump is driven by the starboard inboard engine. Each pump

incorporates a friction drive clutch plate and manual clutch lever. The belt driven pulley on each pump is engaged or

disengaged with the pump shaft and impeller by movement of the clutch lever. The clutch normally is disengaged and

would be engaged only when needed to drain a compartment while at sea. The clutch can be engaged or disengaged at

any engine speed.

(12) The bilge pump overboard discharge valves (fig. 2-9) are located on the port side (two) and starboard side

(one) of the engine room. All three valves must be opened before bilge pump clutch is engaged.

(13) The nine bilge line valves (fig. 2-9) are located forward in the engine room.These valves are opened as

needed to pump out the various bilge compartments.

(14) Oil/water separator controls are located in control panel on port bulkhead. The control provides 24 VDC to

the pump motor. Follow operating instructions on oil/water separator placard to drain compartment.

(15) The hydraulic steering suction valve, (fig. 2-10), is located at bottom of steering system tank in the engine

room. The valve must be open before engines are started.

(16) The ramp hoist hydraulic system supply valve, (fig. 2-10), is located at bottom of ramp hoist system tank in

the engine room. This valve must be open when the ramp hoist system is operating. Close this valve only for a period

of maintenance or prolonged shutdown.

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