Chevrolet Light - Cooling System

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 a ll driving
conditions.
The permane~tly lubricated centrifugal type water pump
keeps the water circu lating; therefore, constantly bringing
cooler water to the areas around the combustion and exhaust
chambers where most heat is generated . The fan assures a con-
sta nt flow of air through the radiator and around th e engine
to aid in cooling th e water. The th ermosta t restricts th e flow of
water until the engine warms up to normal operating t empera -
tur e.
Care.
The cooling system must be kept in good condition if it
is to properly cool the engine under all operating cond itions.
The radiator cap should be removed and the cool ant level
checked frequently . If the coolant level is low, water or anti-
freeze should be added. All models excep t the Forward Control
are equipped with a pressure type radiator cap.
NOTE: The volume of soluti on 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 to l d, especially when anU-freeze is
used,
to prevent loss of solution throu,h th e radiator overflow pipe.
The fan belt .• tension
should be checked occasion-
ally an d, 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 check ed for leaks.
Tighten all ho se clamps
occasionally.
.".
fig ... , _ fona,'tA d j"" m. nt