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 TM 55-1925-273-10-1
0017 00
PRELUBE SYSTEM
The prelube system includes a prelube pump and related piping. The prelube system is used to circulate oil through the
piston cooling and main lube oil systems before starting the engine after extended shutdowns or repairs. Oil for the prelube
system is drawn from the oil pan.
COOLING SYSTEM
Each main engine cooling system consists of two engine-driven centrifugal water pumps, replaceable inlet water manifolds
with an individual jumper line to each liner, cylinder head discharge elbows, an outlet manifold through which water is
circulated, and keel coolers. The two centrifugal water pumps are mounted on the accessory drive housing and are driven
by the governor drive gear. Engine coolant is also circulated through each aftercooler located in the turbocharger air
discharge duct to cool the air before it enters the engine air box. The engine coolant flows through an external piping system
to the keel coolers. The keel coolers transfer heat from the engine coolant to the sea. The cooling system is discussed in
greater depth in WP 0018 00.
END OF WORK PACKAGE
0017 00-7
0017 00-7/8 blank
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