Headlamp Aiming Chart — Standard Models

CAR MUST STAND SQUARE WITH SCREEN, WITH CENTER LINE OF CAR IN LINE WITH CENTER LINE OF SCREEN.

Fig. 310—
REFLECTOR TO BE CHECKED TO SEE THAT IT IS FREE FROM DENTS AND DISTORTIONS.
CENTER LINE OF CAR AND SCREEN.-I• CENTER LINE OF LEFT LIGHT
.->
CENTER LINE OF RIGHT LIGHT.
CENTER LINE OF CARa
THIS DIMENSION MUST BE HELD
FROM FRONT OF HEADLAMP TO FRONT FACE OF SCREEN.
SCREEN TO BE PAINTED FLAT WHITE WITH BLOCK LINES. MUST BE SHIELDED FROM OUTSIDE LIGHT ENOUGH TO ALLOW THE CUT OFF LINE TO BE CLEARLY SEEN.
the wiring as would be the case whenever a short circuit occurs.
In the Chevrolet car and truck, a fuse is inserted in the lighting circuit and stop lamp circuit. This fuse consists of a short piece of metal or wire enclosed in a glass housing. This fuse wire will melt before any damage is done to the wiring. The fuse is made large enough to carry normal current but, it is small enough to melt when the current greatly exceeds the normal value. When the fuse melts or "blows" the circuit is opened and no more current can flow until the fuse is replaced.

The Lighting Switch
The headlamps, parking lights, and tail lamp are controlled by a single switch which is operated by a button at the lower left-hand corner of theinstrument group. When this button is pulled out to a position between the off and parking position, the generator out-put is increased (on Master Models only). When pulled half-way out the parking lights and tail lamp are lighted. When pulled all the way out the headlamps and tail lamp are lighted.
The lighting switch is contained in an insulated metal case and needs no attention or adjustment. To protect the wiring from short circuits a small 15 ampere fuse is mounted on the back side of the ammeter and in the stop lamp wire. Should all lights fail to work, examine the fuses first. I t will usually be found "blown." If one or more lamps fail to burn examine the bulbs. If these are in good condition probably the switch contact springs have weakened and fail to make contact.
CAR MUST STAND SQUARE
WITH SCREEN WITH CENTER LINE OF CAR IN LINE WITH CENTER LINE OF SCREEN
Fig. 311— Headlamp Aiming Chart — Trucks 153
CENTER LINE OF CAR AND CENTER LINE OF RIGHT LIGHT
CUT OFF LINE; TOP OF BEAM FOR ONE AND ONE-HALF TON TRUCK
CUT-OFF LINE TOP OF BEAM FOR ONE-HALF TON TRUCK
CENTER LINE OF LEFT LIGHT
CAR AND SCREEN MUST BE SET ON LEVEL FLOOR
25' THIS DIMENSION MUST BE HELD FROM FRONT OF HEADLAMP TO FRONT FACE OF SCREEN
MUST BE A PAINTED FLAT WHITE SCREEN WITH BLACK LINES SCREEN MUST BE SHIELDED FROM OUTSIDE LIGHT SUFFICIENT TO ALLOW THE CUT OFF LINE TO BE CLEARLY SEEN