headlamp PORSCHE BOXSTER 2009 2.G Owners Manual

Practical Tips, Emergency Service
267
Adjusting HeadlightsfPlease see the chapter “LIGHTS, REPLACING
BULBS” on Page 257.
Adjustment
The adjustment is made wi th the vehicle ready to
drive and the fuel tank completely filled.
The driver’s seat must be loaded by a person or a
165 lbs. (75 kg) weight and the tire pressures
must meet the prescribed values.
After being loaded, the car must be rolled a few
meters so that the suspension can settle.
For checking the headlight adjustment, the verti-
cal position of the cutoff of the lowbeam (see fig.)
has to be projected on a ve rtical screen (wall) in
distance of 24.6 ft. (7.5 m) from the front lens of
the headlamp.
The correct position of the cutoff is 2.0 in. (5 cm)
at 24.6 ft. or 7.5 m (0.4 °) below a horizontal line,
x cm from ground to the center of the headlamp
lens. Lateral adjustment of the
headlights should be
carried out at a specialist workshop with an optical
adjustment unit.
Distance
Visual aim shall be perf ormed at not less than
24.6 ft./7.5 m (this value is a rounded down con-
version from the 25-foot distance typical of field
aim using a screen). The 24.6 ft./7.5 m distance
is measured from the headlamp lens to the view-
ing screen.

268
Practical Tips, Emergency Service
Floor
The surface upon which the
vehicle rests is flat
and approximately level.
Screen
The screen upon which headlamp beams are pro-
jected is perpendicular to the floor and the vehi-
cle’s longitudinal axis, flat, uniformly light in color,
unobstructed, and wide and high enough to ac-
commodate the vehicle beam patterns to be
aimed.
The screen should be wide enough to provide at
least 3.3 ft. (1 m) of space outboard of the vehi-
cle’s headlamp spacing.
Adjustment screws
fDetach side carpeting in luggage compart-
ment.
Unscrew plastic nut A.
Open the cover of the appropriate adjustment
screw.
The setting is adjusted by turning the hexagon
socket screws right or left, as appropriate.
B - Headlight vertical adjustmentVertical adjustment (screw B)
f turn clockwise = beam moves down
turn counter-clockwise = beam moves up
Note
f Do not alter the lateral adjustment.