Two adjusting screws control the horizontal (2) and vertical (1) aiming of each headlamp assembly.

The hole in the radiator support for each headlamp assembly provides access to the recessed adjusting screw (2). Using a T15 TORX® head bit, turn the screws.

Adjust the headlamps to the specifications required by the state and/or the local authorities.

Location

The area should be darkened and large enough for the vehicle and an additional 7.62 m (25 ft) measured from the face of the headlamps to the front of the screen. The floor on which the vehicle rests must be parallel with the bottom of the screen. Compensate for an uneven floor, if necessary.

Aiming Screen

If in use, the screen should be at least 1.52 m (5 ft) in height by 3.66 m (12 ft) in width. The finish should be matte white. Keep the surface well shaded from extraneous light. Keep the screen in proper adjustment with the floor. The screen should be moveable in order to keep the screen in alignment parallel with the rear axle of the vehicle. Position the screen so that a horizontal line (3) drawn perpendicular to the centerline of the screen passes an equal distance midway between the headlamps.

Provide the screen with the following items:

If a regular, commercial aiming screen is not available, the screen may consist of a wall having a clear, uninterrupted area of at least 1.52 m (5 ft) height by 3.66 m (12 ft) width. The surface should be finished with a washable, no-gloss white paint. After establishing the aiming screen, paint or tape a reference line (6) on the floor 7.62 m (25 ft) from the screen. Park the vehicle with the front of the headlamps directly over this reference line.

1. Park the vehicle square with the screen (1).

Park the vehicle with the headlamps directly over the reference line (6).

2. Ensure that all of the components are in place, if work has been completed on the vehicle.
3. Ensure that the vehicle is on a level surface.
4. Stop all of the other work on the vehicle.
5. Ensure that the vehicle has 1/2 tank of fuel or less.
6. Close the vehicle doors.
7. Rock the vehicle sideways.
8. Align the centerline of the vehicle with the centerline (4) of the aiming screen by completing the following steps:

8.1.	Mark the vertical center of the rear and front windows with tape.

8.2.	Use these lines as sight lines in order to match the centerline of the vehicle with the screen.

9. Adjust the vertical tapes (2) on the screen in order to match the vertical centerline of each low beam lamp.
10. Measure the distance from the centerline of the vehicle to the centerline of a low beam lamp.
11. Adjust the horizontal tapes (3) on the screen in order to match the horizontal centerline of each low beam lamp.
12. Measure the height (5) from the floor to the center of a low beam.
13. Illuminate the low beam lamps.
14. Observe the left and top edges of the high intensity zone on the screen.
15. Adjust the headlamps in order to accomplish the following results:

•	The top edge of each high intensity zone must be within 50.8 mm (2 in) above to 63.5 mm (2.5 in) below the horizontal centerlines.

•	The left edge of each high intensity zone must be within 101.6 mm (4 in) to the left or to the right of the vertical centerlines.

Tools Required

J 25300-A Headlamp Aimer

1. Prepare the vehicle.
2. Ensure that all of the components are in place, if other work has been completed on the vehicle.
3. Park the vehicle on a level surface.
4. Stop all of the other work on the vehicle.
5. Ensure that the vehicle has 1/2 tank of fuel or less.
6. Close the doors.
7. Rock the vehicle sideways.
8. Verify that the headlamps are not illuminated.
9. Using the J 25300-A , adjust the headlamps to the specifications required by the state and/or local authorities.

•	Follow the instructions accompanying the tool for the use of the tool.

•	The kit contains special adapters for use with the composite lenses.

•	Adjustment settings for the adapter rods can be found on each headlamp lens face.