Chevrolet 30 Series 1967 Service Manual page 503

always use solder to bond the splice.
flux solder on electrical connections.
tape to cover all splices or bare wires.
When replacing wires, it is important that the correct
size be used. Never replace a wire with one of a sm aller
size. Fusible links in the Chevrolet wiring are four
gauge sizes sm aller than the cable it is designed to pro­
tect. The links are marked on the insulation with wire
gauge size because of the heavy insulation which makes
the link appear a heavier gauge than it actually is.
Each harness and wire must be held securely in place
by clips or other holding devices to prevent chafing or
wearing away the insulation due to vibration.
By referring to the wiring diagrams, circuits may be
tested for continuous circuit or shorts with a conventional
test lamp or low reading volt meter.
Fig . 2 - T-3 Safety Aim er
HEADLAMP ADJUSTM ENT-
T-3 HEADLAMPS
CAUTION: Check and tighten grille retaining
bolts prior to attempting headlamp aiming. Dis­
torted grille or supports in this area will hinder
proper aiming of headlamps.
When aiming headlamps, vehicle should be filled to ca­
pacity with gas, oil, and water but no load. Tires should
be uniformly inflated to recommended pressure.
F ig . 3 - Installing Aim er on Headlamp Unit
Always use rosin
Use insulating
The T-3 Safety Aimer-Type B (fig. 2), is used for the
headlamp aiming description that follows.
required with the Type B T-3 Aimer when adjusting the
7 inch headlamp used on the single headlamp vehicle.
1., Drive vehicle onto selected aiming area.
2. Remove headlamp bezels.
3. Mount the T-3 Aimers on the headlamps so that the
4. Secure the aimers to the headlamp units by firmly
5. With both aimers in place, knot both ends of elastic
ELECTRICAL—BODY AND CHASSIS 12-3
HORIZONTAL
A IM IN G
SCREW
CENTER STRING OVER
" 2R" O N AIMER ARM
Fig. 4 - Headlamp Horizontal Adjustment
vehicle several times and allow to settle.
points of the headlamps engage the smooth inner ring
of the aimers.
pressing knob at center of each aimer (fig. 3). Ro­
tate crossarm s inboard to approximate horizontal
position.
NOTE:
Moisten suction cups slightly to obtain
maximum holding force.
string and, using slots provided, fasten string across
VERTICAL ADJUSTMENT SCREW
F ig . 5 - Headlamp V e rtica l Adjustment
An adapter is
Bounce
CHEVROLET TRUCK SERVICE M ANUAL