Alternative Headlamp Aiming Procedure
TOOLS REQUIREDJ25300-E Headlamp Aiming kit
Properly aim the headlamps in order to obtain the maximum road illumination and safety of the headlamp system. Always aim the headlamps if removing the headlamp assembly from the vehicle. Composite headlamps do not require aiming if replacing only the bulb.
When inspecting or adjusting the headlamp aim, observe the following conditions:
- Ensure the vehicle is on a level surface.
- Inflate all of the tires to the specified pressure.
Refer to the tire placard for tire pressure specifications. Refer to Tire Placard in General Information for the location of the tire placard.
- Inspect vehicles that tow a trailer or carry an unusual load under the same conditions.
- Clean the headlamps before aiming.
- Follow the state requirements for headlamp aiming.
The J 25300-E is designed to accommodate all composite and sealed beam headlamps in any standard shape or size and in any configuration. Use the adapters provided in kits for different lamp shapes and sizes. Regardless of the configuration, aim the headlamps in pairs.
Use the following list in addition to the mounting and adjustment instructions included in the J25300-E in order to aim the headlamps
1. Use the universal aimer on a level floor, or calibrate the aimer for the floor slope.
2. Select and assemble the universal adapter which matches the aiming pad pattern on the lens of the headlamp.
3. Align the selected adapter to the aiming pads. Move the adjustment rod for each pad until correlated with the adjustment rod setting numbers located on the headlamp.
On some headlamps, the numbers are located on the lower edge of the vertical edge of the lens.
4. In order to adjust the rods (2) to the required positions, turn the rods (2) to the neutral position (4).
Slide the rods in or out to the proper setting.
5. Verify that the correct adapter is issued using the correct side aimer.
6. Attach the adapters. Using the adapters, place the aimer onto the respective sides.
7. Ensure the all adjustment rods (6) and the articulating suction cups (4) are contacting the aiming pads (1,3).
8. Add or remove extension studs as needed.
9. Aim the headlamps according to the instructions included with the J25300-E.
10. In order to adjust the horizontal aim, insert the screwdriver (2) and turn the horizontal headlamp adjusting screw.
11. In order to adjust the vertical aim, insert the screwdriver (1) and turn the vertical headlamp adjusting screw.