Question : THE headlamps on my 1990 Toyota Celica are "out of
aim" after an accident and subsequent repairs. I
have been told that if the repairs were carried out
overseas, a machine known as a beam leveler would be
used to adjust the headlamps. How can the beams be
adjusted properly here without such a machine?
HEADLAMP beams must be adjusted to provide maximum
illumination of the road ahead for the driver, while
ensuring that drivers of on-coming cars are not blinded.
Since we drive on the left side of the road, the beams must
be slightly biased to the left side so that the curb side is
illuminated, for the sake of safety.
Headlight adjustment can be done at home. Although not
entirely accurate, it provides satisfactory lighting performance.
First, drive your vehicle till the headlights are about
150mm from a wall. Use a piece of coloured chalk and mark
out the centre of the lamp units on the wall.
Next, back your vehicle till the lights are about 7.5m from
the wall and switch on the low beams. When the beams are
in proper adjustment, they should fall just below, and to the
left of the marks you have made.
On vehicles with separate high beam units, the high beam
should be adjusted so that the beam centre falls 25mm
directly above the mark.