Minor Repairs
315
Adjustment
The adjustment is made with 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
vertical position of the cutoff of the lowbeam (see
fig.) has to be projected on a vertical 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 3.0 in. (7.5 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 performed at not less than
24.6 ft. (7.5 m) (this value is a rounded down
conversion 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 viewing screen.
Floor
The surface upon which the vehicle rests is flat
and approximately level.
Screen
The screen upon which headlamp beams are
projected is perpendicular to the floor and the
vehicle's longitudinal axis, flat, uniformly light in
color, unobstructed, and wide and high enough to
accommodate 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
vehicle's headlamp spacing.
