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TM 10-3930-643-20
INTRODUCTION. (cont)
1-14.
Exhaust System. The exhaust system directs exhaust gases from the
engine into the atmosphere.
Exhaust manifolds receive exhaust from engines
They are drawn through the muffler, to muffle engine noises, and then into the
exhaust pipe where the exhaust gases are discharged into the atmosphere.
S/N
2000 and below have a rain cap on the end of the exhaust pipe to protect it
from moisture.
S/N 2001 and above uses a curved exhaust pipe to perform that
function .
1-15.
Cooling System.
a. Radiator. The radiator has a 15 gallon capacity.
Coolant is circulated
through radiator coils and dissipates the heat generated by the engine. The
radiator cap is equipped with a relief valve to vent pressure caused by
steam
forming in the radiator.
b .
Fan.
The fan is crankshaft driven through “V” belts and pulleys with an
electrically activated magnetic clutch.
I t c i r c u l a t e s a i r a r o u n d r a d i a t or
coils to enable the radiator to dissipate heat.
c . T h e r m o s t a t .
The thermostat automatically regulates engine temperature
by regulating the flow of heated coolant to the radiator.
d.
Water Pump.
The water pump is engine driven.
I t c i r c u l a t e s c o o l a n t
through cooling system.
Coolant is heated in the engine and transmission. It
is directed through the radiator and oil coolers where the heat is
released,
then it is pumped back through the engine and transmission to repeat the cycle.
e . D r i v e B e l t s .
D u a l b e l t s a r e m o u n t e d s o t h a t t h e a l t e r n a t o r , a ir
compressor and water pump are driven by the vibration damper.
f .
Oil Cooler.
Mounted horizontally along left side of engine.
Engine
coolant flows through the unit to remove heat from the engine and transmission
o i l .
1-12
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