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RADIATOR CAPACITY 3-l/2
cocks are located at bottom of radiator and on
engine block ahead of carburetor. Be sure to
remove cap when draining radiator.
TEMPERATURE GAUGE - The temperature
gauge is provided for a visual check on
operating
temperature.
The gauge is marked in green indicating
normal with a range of 170°F. to 220°F.
RADIATOR SHUTTER - The shutter is provided
for controlling the operating temperature of
engine. Turning the screw crank, located on
right hand side of radiator to the right, opens
the shutter.
Always close shutter before starting engine.
OPERATING TEMPERATURE - LOW ENGINE
TEMPERATURES CAUSE CONDENSATION--
SLUDGE AND CORROSION. KEEP ENGINE
HOT. Always close radiator shutter com-
pletely when engine is started and keep it
closed until engines reach operating temper-
ature ( 170°F. when using gasoline, 190°F.
when using low octane fuel). Then open
shutter amount necessary to maintain this
temperature,
If burning low octane fuels, operate engine on
gasoline until temperature reaches 190 F.
to 200 F. before switching to low octane fuel.
This is readily done by shutting valve under
small tank and opening valve under large tank.
Never open valve under larger tank before
shutting valve under small tank as this will
mix the two fuels.
The minimum operating temperatures are
fuel. Strict adherence to these recommen-
dations will guard against excessive dilution
of lubricating oil, condensation and corrosion
PRESSURE RADIATOR - The pressure radiator
permits the use of a higher operating tempera-
ture. The cooling solution (pure water) will
not boil in the pressure radiator until a
temperature of 230°F. is reached.
To remove the radiator cap, turn to the left
until it stops.
Push down and continue to
turn to the left until the cap is released.
Do not remove the cap when the temperature
is above 212OF. as the cooling solution will
break into a violent boil which may splash onto
person removing cap.
RADIATOR AND COOLING SYSTEM
gallons. Drain
14
TEMPERATURE GAUGE=
SHUTTER CONTROL HANDLE
PRESSURE CAP
STANDARD CAP
RADIATOR CAPS
Never pour cold water in a hot engine. Clean
rain or soft water should be used in the cool-
ing system if available. Hard or alkaline
water will form a scale which will impair
radiation if allowed to build up in the cooling
system. The use of washing soda will help
dissolve this scale. Where only hard water is
available, washing soda should be used at
intervals, and before the accumulation of
scale becomes heavy enough to scale off and
stop up radiator passages.
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