Jeep 1997 Grand Cherokee Service Manual page 498

8L - 8 LAMPS
SERVICE PROCEDURES (Continued)
(6) Fuel tank should be FULL. Add 2.94 kg (6.5
lbs.) of weight over the fuel tank for each estimated
gallon of missing fuel.
ALIGNMENT SCREEN PREPARATION
(1) Position vehicle on a level surface perpendicu-
lar to a flat wall 7.62 meters (25 ft) away from front
of headlamp lens (Fig. 1).
(2) If necessary, tape a line on the floor 7.62
meters (25 ft) away from and parallel to the wall.
(3) Measure from the floor up 1.27 meters (5 ft)
and tape a line on the wall at the centerline of the
vehicle. Sight along the centerline of the vehicle
(from rear of vehicle forward) to verify accuracy of
the line placement.
(4) Rock vehicle side-to-side three times to allow
suspension to stabilize.
(5) Jounce front suspension three times by pushing
downward on front bumper and releasing.
(6) Measure the distance from the center of head-
lamp lens to the floor. Transfer measurement to the
alignment screen (with tape). Use this line for
up/down adjustment reference.
(7) Measure distance from the centerline of the
vehicle to the center of each headlamp being aligned.
Transfer measurements to screen (with tape) to each
side of vehicle centerline. Use these lines for left/
right adjustment reference.
HEADLAMP ADJUSTMENT USING ALIGNMENT
SCREEN
A properly aimed low beam will project the top
edge of high intensity pattern on the screen from 50
mm (2 in.) above to 50 mm (2 in.) below headlamp
centerline. The side-to-side left edge of high intensity
pattern should be from 50 mm (2 in.) left to 50 mm
(2 in.) right of headlamp centerline (Fig. 1). The pre-
ferred headlamp alignment is 0 for the left/
right adjustment and 1" down for the up/down
adjustment. The high beams on a vehicle with aero
headlamps cannot be aligned. The high beam pattern IN/OUT ADJUSTER
should be correct when the low beams are aligned
properly.
To adjust headlamp aim, rotate alignment screws
(Fig. 2).
Fig. 2 Aero Headlamp AlignmentScrews
ZG
HEADLAMP UP/DOWN ADJUSTER