Headlamp: Adjustments

Bubble Level:

HEADLAMP ALIGNMENT
The Plymouth Prowler headlamps are equipped with a bubble level to aid up/down headlamp alignment.

Pointer And Scale System:

The bubble level is used to assist headlamp alignment when compensating for vehicle ride height changes due to heavy luggage compartment loads. The bubble level cannot be calibrated, the headlamps must be replaced if bubble level vial is faulty An aiming scale and pointer system is located on the top of the headlamp module to assist left/right alignment.

HEADLAMP ALIGNMENT PREPARATION
1. Verify headlamp dimmer switch and high beam indicator operation.
2. Inspect and correct damaged or defective components that could interfere with proper headlamp alignment.
3. Verify proper tire inflation.
4. Clean headlamp lenses.
5. Verify that luggage area is not heavily loaded.
6. Fuel tank should be FULL. Add 2.94 kg (6.5 lbs.) of weight over the fuel tank for each estimated gallon of missing fuel.

HEADLAMP ADJUSTMENT USING ALIGNMENT SCREEN

Headlamp Alignment Screen:

Alignment Screen Preparation
1. Position vehicle on a level surface perpendicular to a flat wall 7.62 meters (25 ft.) away from front of headlamp lens.
2. If necessary, tape a line on the floor 7.62 meters (25 ft.) away from and parallel to the wall.
3. From the ground up 1.27 meters (5 ft.), tape a line on the wall at the center line of the vehicle. Sight along the center line of the vehicle (from rear of vehicle forward) to verify accuracy of the line placement.
4. Rock vehicle side-to-side three times to allow suspension to stabilize.
5. Jounce front suspension three times by pushing downward on front bumper and releasing.
6. Measure the distance from the center of headlamp low beam unit to the ground. Transfer measurement to the alignment screen (with tape). Use this line for up/down adjustment reference.
7. Measure distance from the center line of the vehicle to the center of each headlamp low beam unit being aligned. Transfer measurements to screen (with tape) to each side of vehicle center line. Use these lines for left/right adjustment reference.

HEADLAMP ADJUSTMENT
A properly aimed headlamp will project the upper step of the beam pattern 20 mm (0.75 inches) below the headlamp center line. The horizontal aim will project the vertical step on the vertical center line of the headlamp.

Headlamp Adjustment:

The preferred headlamp alignment is 0 (± 0.760) for the up/down adjustment as indicated on bubble level. Preferred left/right alignment is 0 (± 0.760) as indicated on the scale. The high beam headlamps cannot be aligned. The high beam pattern should be correct when the low beams are aligned properly.

NOTE: The bubble level and scale are calibrated before the headlamp is installed in the vehicle. The bubble level cannot be calibrated without damaging the headlamp module. If bubble level is faulty, replace headlamp module.

To adjust headlamp alignment, rotate alignment screws to achieve the specified low beam pattern.