Hudson 480-490 Series Service Manual page 46

40 BODY MANUAL
USING THE HUDSON
WEATHER CONTROL
The proper use of the Hudson Weather Control is some-
thing that everyone who works on Hudson automobiles
should know. The following are instructions for its
While driving the car with the cowl ventilator open and
all windows closed, set the regulator lever (No. 2), Figure
40, at the bottom of the heater in about mid-position. If
this produces too much heat to meet individual require-
ments, move the lever to the left gradually until the
desired amount of heat is attained. Likewise, if more heat
is desired, move the lever to the right. After this setting is
made, there will be little need for readjustment as the heat
is thermostatically controlled.
If cold air is delivered by the heater while the engine is
warming up, close the cowl ventilator until the engine
heat indicator begins to show that the engine is warming
up; then open the cowl ventilator.
FIGURE 40
Do not adjust the heat control during the engine warm-up
period in an attempt to get quicker heat. The thermostatic
control valve remains wide open until the temperature
rises to the regulated setting; therefore, moving* the con-
trol lever will not increase the delivery of heat.
When the regulator lever is moved to the extreme right,
the thermostatic valve is locked open, and maximum heat
output is attained regardless of car temperature. When the
regulator lever is moved to the extreme left, the valve is
locked closed, and no water flows thru the heater. This
position is used for summer driving and permits the open-
ing of the cowl ventilator in hot or rainy weather. The
cowl duct is fitted with a trap to prevent water entering the
car thru the open cowl ventilator.
When starting out in a cold car with a full passenger load,
some window fogging may occur.
This may be reduced by turning on the defroster fan, which