Pontiac FIREBIRD 1972 Service Manual page 1327

CHASSIS ELECTRICAL
Fig. 12-63 F Series Front End Wire Harness Installation
b. Push handle "Y" forward (to expel air from suc- HEADLAMP AIM
tion cup) and while holding aimer firmly against
the headlamp guide points, slowly pull handle 1. Horizontal Aiming
"Y" back until spring catch engages and holds it
in position (Fig. 12-63).
a. Set right-left scale on each aimer to
"w.
c. Install second aimer on other side of vehicle in the
same manner. Rotate aimers until the "up-down"
and "right-left" scales are facing straight up and
the horizontal aiming target can be seen from the
viewing port in top of the opposite aimer (Fig.
12-75). Aimers are now installed for checking the
no. 2 units (low beam) on B and A Series or 7 inch
units on G. F and X Series.
d. Install in same manner on inboard units to check
No. 1 units (high beam) on B and A Series.
b. While sighting through viewing port on top of
aimer, adjust headlamp horizontal adjusting
screw until split target image merges into one
unbroken line.
NOTE: To remove backlash, final adjustment
should be made while turning screw clock wise.
c. Make horizontal adjustment on other side of vehi-
cle in same manner.
2. Vertical Aiming