Quantcast PROPULSION SYSTEM - TM-55-1905-220-14-40011

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TM 55-1905-220-14-4
Starting Aid
Hydrostarter Pump (Engine Driven)
Hydrostarter Pump (Hand)
Hydrostarter Piping (Fwd Eng Rm)
Hydrostarter Piping (Aft Eng Rm)
Hydrostarter Reservoir, Filter, Solenoids
Propeller Shaft
Port Line Shaft
Shaft Inflatable Seal
Shaft Seals, Preformed
Shaft Lock
a. General Description.
(1) The main propulsion engine is a 12 cylinder Detroit Diesel. The engine is equipped with an oil cooler,
lubricating oil filter, fuel oil strainer, fuel oil filter, air silencer, governor, heat exchanger, raw water pump and a
(2) Fuel is drawn from the supply tank and through a strainer by a gear-type fuel pump, then forced
through the filter and fuel inlet manifolds in the cylinder heads to the injectors. Excess fuel is returned to the
supply tank via the return fuel manifolds and connecting lines. Since fuel is constantly circulating through the
injectors, it serves to cool the injectors and carry off any air in the fuel system.
(3) Air for scavenging and combustion is supplied by blower(s) which pumps air into the engine cylinders
via the air box and cylinder liner ports. All air entering the blower(s) first passes through an air silencer.
(4) Full pressure lubrication is supplied to all main connecting rod and camshaft bearings, and to other
moving parts of the engine. A gear-type pump draws oil from the oil pan through an intake screen and delivers
it to the oil filter(s) and then to the oil cooler(s). From the oil cooler(s) the oil flows through passages that
connect with the oil galleries in the cylinder block and cylinder heads for distribution to the bearings, rocker arm
mechanism and other functional parts.
(5) Coolant is circulated through the engine by a centrifugal type water pump. Heat is removed from the
coolant, which circulates in a closed system, by a heat exchanger. Control of the engine temperature is
accomplished by thermostats that regulate the flow of the coolant within the cooling system.


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