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5.
WORKING SURFACE
5.1.
Position the vehicle on the designated headlamp aim standing area.
5.2.
When positioning the beamsetter ensure the floor is perfectly even and level.
5.3.
If this is not possible the vehicle and beamsetter must be on the same slope, which must not exceed 0.5º.
5.4.
Headlights must not be checked where surfaces exceed 0.5º angle. (See fig 2.).
fig.2
OK
6.
VEHICLE PREPARATION
6.1.
Straighten vehicle wheels.
6.2.
Check the tyre pressure.
6.3.
Ensure the headlights are clean and dry.
6.4.
If the vehicle is fitted with manual or electric headlamp levelling devices, ensure these are set up for vehicle with normal load.
6.5.
Remove anything which could alter the vehicles position, i.e. Snow, Ice, Mud, etc.
7.
OPTICAL POSITIONING
a
fig.3
7.1.
7.2.
7.3.
7.4.
fig.5A
8.
OPERATION
8.1.
Switch engine on.
8.2.
Align the headlamp aim equipment with the longitudinal axis of the vehicle.
8.3.
Align the centre of the collecting lens with the centre of the headlamp under test.
8.4.
With an assistant sitting in the driving seat, switch on the headlamps to the beam on which the headlamp is to be checked.
Note: When checking headlamp aim on vehicles with hydro-pneumatic suspension systems, it is necessary to have the engine idling.
8.5.
Determine the appropriate headlamp beam image and its aim (see fig 6.). Old vehicles (approx. pre 1950 ) headlamps beam image
may not conform to fig 6, in such cases check::
a) DIP BEAM headlamps are aimed so they do not dazzle i.e. the beam image brightest part is aimed at least 0.5% below the horizontal
(fig 7). Or, for headlamps which cannot be checked on dip beam, check:
b) MAIN BEAM headlamps are aimed so that the beam image centre is on or slightly below the horizontal (fig 8).
8.6.
© Jack Sealey Limited
0.5
MAX
0
fig.5B
Original Language Version
NO
NO
HBS97.HGV Issue:3 (3) 18/06/21
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