Headlights are adjusted by turning screws 1 and 7 (pic. 7-31), which rotate the optical element in the vertical and horizontal planes.
Pic. 7-31. Headlight adjustment:
1, 7 - screws for adjusting the direction of the headlight beam; 2 - optical element; 3 - screw fastening the rim of the optical element; 4 - decorative lining of the front end of the body; 5 - screw fastening the decorative lining; 6 - rim of the optical element.
It is most convenient to adjust the headlights with the help of mobile optical devices. If they are not, then the adjustment can be carried out using the screen.
Place a fully fueled and equipped car, with a load of 735 N (75 kgf) on the driver's seat, on a flat horizontal area 5 m from a smooth wall or any screen (plywood shield about 2x1 m in size, etc.) so that the axis of the car was perpendicular to it. Before marking the screen, make sure that the air pressure in the tires is normal, and then rock the car from the side so that the suspension springs are installed.
Draw on screen (pic. 7-32) vertical lines: axial 0 and lines A and B passing through points E, corresponding to the centers of the headlights. These lines must be symmetrical about the center line of the vehicle. At a height corresponding to the distance of the centers of the headlights from the floor, draw line 1 and below it 65 mm line 2 of the centers of light spots.
If the car has a headlight hydrocorrector, then set its handle on the instrument panel to the position corresponding to the load of the car by one driver.
Turn on low beam headlights. Sequentially, first for the right headlight (the left is covered with a piece of cardboard or dark matter or turned off), and then for the left (right closed), adjust with screws 1 (pic. 7-31) and 7 beams of headlights.
To adjust the headlight beam in the vertical plane, screws 1 and 7 are turned in the same direction and by the same number of revolutions. The difference in revolutions of one screw without correction of the other should not exceed 3 revolutions.
In the horizontal plane, the headlights are also adjusted by screws 1 and 7, but by rotating them in different directions. For example, if one screw is turned one turn clockwise, then the second screw must be turned one turn counterclockwise.
On some cars, headlights without a hydraulic corrector and with a different arrangement of adjusting screws can be installed. They have a screw for adjusting the beam of light in the horizontal plane on the left, and a screw for adjusting the beam of light in the vertical plane is located at the top.
For correctly adjusted headlights, the upper border of the light spots must coincide with line 2 (pic. 7-32), and the intersection points of the horizontal and inclined sections of light spots - with points E.