M
ETHOD OF INSPECTION
Positioning the vehicle (See Fig. 7)
To check headlamp aim:
1 Refer to the Tester's Manual for guidance on test procedures, types of headlights and
pass/fail criteria.
2 Position the vehicle as accurately as possible at 90
0
to the tester rails. The headlamp
lens should be positioned 350mm (+/- 150mm) from the lens of the beam tester. Ensure
that the headlight lens is clean.
3 Measure the height to the centre of the headlight lens from the floor and adjust the
height of the optical box to the same height. If the rails are recessed then this must be
added to ensure the optical box is at the correct height. There is a tolerance of +/- 10mm.
(NOTE 1) The above information is based on the criteria published in the MOT Inspection Manual which is an HMSO
publication and is available from most bookshops. Always refer to the current edition for any amendments or changes
to current legislation.
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