Cooling System - Chevrolet Light Operator's Manual

COOLING SYSTEM
Description. The cooling system consists of the radiator.- fan,
water pump, thermostat, water passages
in
cylinder block and
cylinder head, and the necessary connections and fittings
(fig.
25). The function of the cooling system
is
to keep the engine
at the most efficient operating temperature under all driving
conditions.
The
permane~tly
lubricated centrifugal
type
water pump
keeps the water circulating; therefore, constantly bringing
cooler water to the areas around the combustion and exhaust
chambers where most heat is generated. The fan assures a con-
stant flow of air through the radiator and around the engine
to aid
in
cooling the water. The thermostat restricts the flow of
water until the engine warms up to normal operating tempera-
ture.
Care. The cooling system
must be kept in good condition if it
is to properly cool the engine under all operating conditions.
The radiator cap should be removed and the coolant level
checked frequently.
If
the coolant level is low, water or anti-
freeze should
be
added.
All
models except the Forward Control
are equipped with a pressure type radiator cap.
NOTE: The volume of solution in a Chevrolet coolin, system
expands about one fluart when its temperature is changed from
3Z' to 160°; therdore, the cooling system should be left from one
pint
to
one quart low if filled told, especially when anU-freeze
is
used, to prevent loss of solution throu,h the radiator overflow pipe.
The fan belt .• tension
should be checked occasion-
ally and,
if necessary.
ad-
justed
to
provide
%"
up or
down movement from nor-
mal position at a point mid-
way between fan and gener-
ator pulleys (fig. 41).
The system s hould be
thoroughly checked for leaks.
Tighten
all
hose clamps
occasionally.
.".
fig ... , _ fona,'tA dj"" m. nt