Cadillac 1933 V8 Operator's Manual page 48

A i m i n g t h e H e a d l a m p s
The headlamps used on the Cadillac V-8 are of the Depress-
Beam fixed-focus type and the only adjustment ever necessary is
the aiming of the beam. The aim of the lamps should be tested
periodically according to the following procedure, except when
state or local regulations apply, and aimed if necessary. In cases
of state or local regulations, this procedure should be modified to
meet the legal requirements.
A light colored vertical surface, such as a blank wall or the
garage door, on which the light beams can be projected from the
car at a distance of about 25 feet, should be used to make the test.
Draw in the lines shown in figure 36 according to the dimensions
indicated. The vertical center line may be located by sighting
through the center of the rear window of the car across the
radiator cap to the wall.
Center Line
Fig. 36. Light pattern of the left-hand headlamp with the cartwenty-five feet
from the vertical surface and the light switch in the "Driving" position. The
location of the beam should be determined in relation to the lines drawn in at the
dimensions indicated.
One lamp at a time should be tested with the lens in place and
with the light switch lever in the driving position. If the aim is
correct, the light beam will be patterned and located as shown in
figure 36 for the left-hand lamp and as in figure 37 for the right-
hand lamp.
If the pattern of either lamp is not located as shown in the
diagrams, the lamp out of alignment should be re-aimed. This
[54]
Fig. 37. Light pattern of the right-hand headlamp projected under the same
conditions as the left-hand headlamp.
may be done by loosening the acorn nut (figure 38) and turning
the lamp sidewise and up or down until the pattern is correctly
located. It is important of course that the flutes on the lens
be straight up and down at all
times. The lamp should then
be held in place while the
adjusting nut is securely tight-
ened.
Any replacement of parts
of the lamps should be with
identical parts of the same
make. The manufacturer's
name is clearly marked on
the lens, on the reflector and
on the lamp housing. Two-
filament bulbs of 32-32 candle
power are originally supplied
with the car and should be
S t o r i n g t h e C a r
If the car is to be stored for any length of time it is important
that a few precautions be taken to protect it from deterioration.
Blocking up the car to take the weight off of the tires and placing
[551
Fig. 3S. The headlamps may be
turned in any direction necessary for
aiming after loosening the clamping
nut at the base of the lamp.
specified for replacement.