Headlamp Aiming: Notes
NOTE:
Check, and adjust if necessary, headlamp aiming whenever a headlamp assembly is replaced or the vehicle has been in a collision. If the headlamp cannot be properly adjusted, replace the headlamp. Refer to "Headlamps".
Some state and local laws specify requirements for headlamp aim. All of these laws must be complied with performing any headlamp aiming operations.
Headlamp aim should be inspected for the following conditions:
- When a new headlamp capsule is installed.
- If service or repairs to the front and area have, or may have, disturbed the headlamps or their mounting.
- 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 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 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.
Check Points & Before Aiming
- Remove any snow, ice or mud from the vehicle.
- The vehicle must have a full tank of gas.
- Stop all other work on the vehicle.
- If any service has been performed on the vehicle make sure that all of the components are back in their original place.
- The vehicle must be on a level surface.