Headlight Aim Check
47x 20.02.001
- Park the vehicle on a level surface, 25 ft (7.6 m) away from, and perpendicular to, a vertical screen or wall. Shut down the engine and set the parking brake. Chock the tires
- Each headlight has a height adjusting dot on the lens in
front of the low beam lamp. See Fig.. Measure the distance from the ground to the height adjusting dot
on each headlight and make a note of these measurements.
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Measure the distance from the ground to the height adjusting dot.
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Height Adjusting Dot in Front of the Low Beam Lamp
Fig. 1, Measuring From the Ground to the Height Adjusting Dot
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- On the screen or wall, mark the locations of each headlight
bulb center using the measurements made in step 2. See Fig., items 2 and 3.
Fig. 2, Headlight Aiming Screen/Wall
- Turn on the low-beam headlights.
- Check the vertical adjustment of the low beams. The center
of each beam projection should fall on or near the marks made during
step 3. See Fig..
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Measurement
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Low-Beam Angle Upper Limit
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Ideal Low-Beam Projection
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Low-Beam Angle Lower Limit
Fig. 3, Vertical Low-Beam Headlight Variation Limits
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- Use Table. to determine
the maximum vertical distance allowable between the marks on the wall
and the center of each low-beam projection.If the distance between either projection center and the mark made on the wall or screen is greater than the maximum distance given in Table., adjust the vertical positioning of that headlight.
Table 1, Vertical Low-Beam Headlight Variation Limits
Table 1, Vertical Low-Beam Headlight Variation Limits
Note: