Headlamp: Adjustments

NOTE : Horizontal aim in not necessary for this vehicle and is not adjustable.

NOTE: Consult your state's vehicle inspection manual for recommended tolerance ranges for visual aiming.


1. NOTE : The sight shield may need to be positioned or removed for access to the adjusters.
Before starting headlamp assembly adjustment:
^ Check the tire inflation.
^ Check that no other load is in the vehicle other than a half tank of gas.
^ Check that the headlamps are clean.
^ Check for correct headlamp operation.
^ Check that the vehicle is on level ground.
^ If the vehicle is equipped with air suspension make sure the switch is on.






2. NOTE : The vertical wall or screen must be a minimum of 2.4 meters (8 feet) wide.

Park the vehicle on a level surface approximately 7.6 meters (25 feet) from the vertical wall or screen directly in front of it.

3. NOTE : The center of the lamp is marked by a 3 mm (0.12 in) circle on the headlamp lens.






Mark a horizontal reference line on the vertical wall or screen.
1. Measure the center of the headlamp height to ground and record.
2. Make a 2.4 meters (8 feet) horizontal mark (masking tape) on the vertical vvall or screen at the same distance from the ground as previously recorded.

4. NOTE :This procedure should be done in a dark environment to effectively see the headlamp beam pattern.

Turn on the low beam headlamps to illuminate the wall or screen and open the hood.






5. NOTE : The appearance of the beam pattern may vary between vehicles. On the wall or screen locate the high intensity area of the beam pattern.

6. NOTE : The appearance of the beam pattern may vary between vehicles.






Identify at the top edge of this high intensity area a distinct horizontal cutoff in the beam pattern. If the top edge of this cutoff is not even with the horizontal reference line the headlamp beam will need to be adjusted.