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dissipation and results in overheating. This, in
turn, cause loss in lubrication efficiency and accu-
mulation of carbon, varnish and sludge.
If overheating exists due to clogging of the
engine portion of the cooling system, the condi-
tions should be corrected by the use of a reputable
solvent or a reverse flushing.
CAUTION: Care must be used in the selection
of cleaners as some of them contain strong
acids or caustics that will react with the metal
of the radiator core, eating holes through the
metal and causing the radiator to leak.
REVERSE FLUSHING
Reverse flushing of the cooling system is the
forcing of water through the radiator using air
pressure and flushing in a direction opposite to
that of the normal flow of water
.
USE OF INHIBITOR
The regular use of a cleaning and an inhibiting
fluid in the cooling system and periodic reverse
flushing will greatly reduce the formation of rust,
s c ale and corrosion. The logical time for flushing
and introduction of inhibitor is when the anti-
freeze is installed in the fall and when it is removed
in the spring.
A good inhibitor should be kept in the cooling
system at all times. The effectiveness of any
inhibitor is limited to about six months after
which the cooling system should be flushed, re-
filled and new inhibitor added.
Hot water heaters should be flushed separate-
ly. Deposits build up in the heater core just the
same as they do in the radiator core and will
decrease the efficiency of the heater.
COOLING SYSTEM 54
ANTI-FREEZE SOLUTION
There are several anti-freeze solutions avail-
able that are satisfactory for automobile cooling
systems. Among them are denatured alcohol,
methanol (synthetic wood alcohol) and ethylene
glycol. Do not mix different basic types of anti-
freeze.
The alcohol type antifreeze solutions are sub-
ject to evaporation, especially on heavy runs, and
should be tested frequently. Add as necessary to
protect the cooling system for the lowest antici-
pated temperature:
CAUTION: These liquids, if spilled on the car,
should be washed off immediately with a gener-
ous quantity of water to prevent damage to the
finish.
It is advisable to tighten or replace all hose connec-
tions. It is important that the cylinder head be kept
tight to prevent leakage.
If evaporation o c cur s with the use of ethylene
glycol, it is only necessary to add water to the
solution; however, the cooling system should be
watched closely for leaks, and should be tested
when additional water is required.
CAUTION: Solutions containing salt, calcium
chloride, soda, sugar, or mineral oils such as
kerosene or engine oil should never be used in
the cooling system as they either clog the water
passages or damage the hose connections and
other parts.
WATER PUMP
The water pump features a permanently lubri-
cated ball bearing for the pump shaft and a non-
adjustable packing. A permanent seal, which
makes repacking unnecessary, is used to prevent
leakage around the water pump shaft.
A large drain hole at bottom side of pump body
allows for drainage and acts as a vent to minimize
moisture formation in the pump assembly.
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