Headlamp Aiming
Visual Aiming Preparation Procedure
Note: Some state and local laws specify requirements for headlamp aim. Comply with all of these laws when performing any
headlamp aiming operations.
Headlamp aim should be checked:
• When a new headlamp capsule is installed.
• If service or repairs to the front end area have, or may have, disturbed the headlamps or their mounting.
The aiming screen should meet the following criteria:
• The area will consist of a level surface large enough to allow for a vehicle and an additional 7.62
m
(25 ft) measured from
face of lamps to the front of the aiming screen.
• The screen will be 1.52
m
(5 ft) high x 3.66
m
(12 ft) wide with a matte white surface well shaded from extraneous light,
and properly adjusted to the floor on which the vehicle stands. Provisions should be made to align the aiming screen
parallel with the vehicle.
• The screen shall be provided with a fixed vertical centerline, two laterally adjustable vertical tapes, and one vertically
adjustable horizontal tape.
• If a regular commercial aiming screen is not available, the screen may consist of a vertical wall having a clear
uninterrupted area approximately 1.83
m
(6 ft) high and 3.66
m
(12 ft) wide. The surface should be finished with a
washable non-gloss white paint.
• After the aiming screen has been set up in a permanent location, paint a reference line on the floor directly under the lens
of the lamps to indicate the proper location of the headlamps when they are being aimed:
-
Distance between headlamps
(1)
-
Center line of screen
(2)
-
Adjustable vertical pointer
(3)
-
Adjustable horizontal tape
(4)
-
Diagram of light screen
(5)
-
Vertical center line ahead of right headlamp pointer position
(6)
-
7.62
m
(25 ft)
(7)
-
Car axis
(8)
-
Adjustable vertical pointer
-
Horizontal center line of lamps
-
Vertical center line ahead of left headlamp
Prior to aiming the headlamps, the following steps must be taken:
1. Remove any snow, ice or mud from the vehicle.
2. The vehicle must have a full tank of gas.
3. Stop all other work on the vehicle.
4. If any service has been performed on the vehicle, make sure that all of the components are back in their original place.
5. The vehicle must be on a level surface.
Lighting
BODY SYSTEMS
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CHEVROLET SONIC 2012 BODY REPAIR MANUAL
