TM 5-4320-302-14Section III. TECHNICAL PRINCIPLES OF OPERATION1-15. CENTRIFUGAL PUMP UNITThe centrifugal pump mounts on a skid in line with a 35 horsepower diesel engine. Power from the engine is transferredto the pump through a direct drive coupling for maximum torque at rated output. The pump is auxiliary (exhaust) primed(a check valve retains water in the pump body), and is capable of variable speed operation. The pump has a capacity of200 gallons per minute at 300 feet total head. The pump is equipped with female, 2-1/2-inch NPT suction and dischargeports. The continuous-duty, air/oil-cooled diesel engine uses a 12-volt electrical system, and is equipped with electricstart, spin-on oil and fuel filters, a heavy-duty dry-type air cleaner, and a control panel.(A)ENGINE. Bolted to the skid assembly. Provides the power necessary to drive the pump.(B)CENTRIFUGAL PUMP. Bolted to the skid assembly. Uses power from the engine to pump water from the suction port to the discharge port.(C)SKID. Provides a movable mounting platformfor the engine and pump assemblies.The following text functionally describes the interaction of unit components during operation.(A)ENGINE1. ELECTRICAL SYSTEM. Major functional components include a battery, starter motor, alternator, andwiring harness. The battery provides electric power to run the starter motor and start the engine. Thealternator recharges the battery after the engine is started, and provides power to all electrical componentsthrough the wiring harness.2. LUBRICATION SYSTEM. Major components include a lube oil pump, lube oil cooler, and lube oil filter.The lube oil pump pumps oil to reduce friction between moving parts,1-7
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