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

Custom Search

OPERATOR MAINTENANCE INSTRUCTIONS

TM-55-1905-220-14-4 Landing Craft Unit LCU 1671-1679 (1905-01-009-1056) Manual

Engine Model and Serial Number Designation.

TM 55-1905-220-14-4

3-6. PROPULSION SYSTEM (Cont).

DESCRIPTION

PARAGRAPH

Starting Aid

3-45

Hydrostarter

3-46

Accumulator

3-47

Hydrostarter Pump (Engine Driven)

3-48

Hydrostarter Pump (Hand)

3-49

Hydrostarter Piping (Fwd Eng Rm)

3-50

Hydrostarter Piping (Aft Eng Rm)

3-51

Hydrostarter Reservoir, Filter, Solenoids

3-52

Propeller Shaft

3-53

Port Line Shaft

3-54

Shaft Inflatable Seal

3-55

Shaft Seals, Preformed

3-56

Shaft Lock

3-57

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

starter.

(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.

3-248