1930 Cadillac Brochure Front Cover - GM Heritage Center

As the brake lining wears, the pedal must be pushed farther
down to apply the brakes. Do not wait until the pedal goes all
the way to the floor board before having the brakes readjusted.
Readjustment is recommended as soon as the pedal must be
pushed down to within one inch of the floor board. A temporary
adjustment of the brakes is explained on page 48.
For parking, the brakes are operated by the hand Jever at the
right of the transmission control lever.
Lighting Switch
The lighting switch control is at the upper end of the steering
column in the center of the steering wheel. The lever has three
positions besides the "off" position, which is the straight down
position. Turning the lever to the left turns on the parking
lamps on the fenders and
the rear lamp. The first
position of the lever when
turned to the right switches
on the headlamp lower
beams and the rear lamp,
while the second position
to the right switches on the
headlamp upper beams and
the rear lamp.
Fig. 11. The lighting switch control
is at the hub of the steering wheel.
The instrument lamps are
controlled by a separate
switch button at the extreme left of the instrument panel.
The lamp bulbs that arc used are as follows:
Lamp
Headlamps
Stop lamps
Parking lamps
Instrument lamps
Rear lamps
Closed car lamps
Voltage
6-8 "
6-8
6-8]
6 8>
6-8 [
6-8J
r2o]
Candle-Power
21 (Two Filament)
Mazda No. 110
15
3
Danger of Running Engine in Closed Garage
Every person having to do with the operation or care of a
motor car should be warned of the danger that attends running
the engine while the car is in a small closed garage.
Carbon monoxide, a deadly poisonous gas, is present in the
exhaust of all interna] combustion engines. Most people are
already familiar with carbon monoxide in the form of illuminating
gas, or in the gas produced by furnaces and stoves when
insuificient air is supplied to give complete combustion. But
illuminating gas and coal gas have an unpleasant odor, which
serves as a warning, whereas carbon monoxide, as produced in
the internal combustion engine, is colorless, taseless and almost
odorless, so that the victim may be overcome before he is aware
of the danger. When the engine exhausts into the open air,
the carbon monoxide is so diluted that it has no effect. It is
when the engine is run for a time in a closed room that the proportion
of carbon monoxide in the air may increase to the point
at which continued breathing of it would be fatal. The United
States Public Health Service advises that the average automobile
engine warming up in a single car garage will give off enough
carbon monoxide in three minutes to endanger life.
Proper precaution must be taken in cold weather when the
natural tendency is to keep the garage doors and windows
closed. The practice of letting the engine warm up in a closed
garage before opening the doors is unsafe. The risk is made
greater by the fact that the enriching of the mixture by manipulation
of the carburetor choke increases the amount of carbon
monoxide formed.
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