1935 Cadillac - GM Heritage Center

Cadillac Preliminary Service hi format ion 33
Fig. 44. Multibeam
lens and reflector
Fig. 46. Upper beam of left headlamp without
lens
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Three separate and distinct beams of light are
obtainable from Multibeam headlamps: •'
1. An efficient and symmetrical upper or driving
beam for the open road.
2 An asymmetrical passing beam, which eliminates
the element of danger in passing. This beam
is obtained by depressing the left side of the driving
beam.
3 A symmetrical lower beam for city driving.
The upper or driving beam is produced by the
lower filament of both lamps. The asymmetrical
passing beam is produced by the lower filament of
the left hand lamp, and the upper filament of the
right hand lamp. The symmetrical lower beam is
produced by the upper filaments of both lamps.
The Multibeam headlamp bulbs (Fig. 45), are
of the prefocus 32-32 candlepower type Mazda
No. 2330-L. They are held in the reflector by three
small pins projecting through the flat at the apex
of the reflector and engaging the button hole slots
in the bulb collar. The pressure of the heads of
these pins actuated by springs behind the reflector,
holds the bulb firmly in the reflector. The three
pins in the reflector are unequally spaced, making
it impossible to assemble the bulbs in an incorrect
position. The base of the bulb is marked "top"
to assist in aligning the slots in the bulb collar
with the retaining pins.
The Multibeam bulbs are installed in the reflector
in a similar manner to the conventional
bayonet type bulbs. That is, they are pushed on
the pins and turned or rotated slightly clockwise
to lock them in position.
It is important that all three pin heads project
through the bulb collar slots and that the collar
rests flat against the bulb seat before the bulb is
turned to lock it in position. When removing the
bulb it should be tipped or rocked slightly before
it is turned counterclockwise.
Headlamp Adjustment
The new prefocused Multibeam headlamps are
equipped with a tilting reflector mechanism that
permits aiming the beams up or down by an outside
adjusting screw at the bottom of the lamp.
See Fig. 42. The beams may also be aimed to the
right or left by means of the side adjusting screws
under the cork gaskec. The beams can therefore
Fig. 45. A special prefocused bulb is used in the
Multibeam lighting system
Fig. 47. Upper beam of left headlamp correctly
aimed