Headlight beam adjustment should only be carried out by qualified personnel at a workshop. Headlight adjustment is carried out using optical instruments. If they are not, then the adjustment can be carried out using the screen (pic. 7-26).
Pic. 7-26. Headlight adjustment scheme:
1 - a horizontal line corresponding to the centers of the headlights;
2 - line passing through the centers of light spots;
A and B - vertical lines corresponding to the centers of the headlights;
O - center line;
h is the distance of the headlight centers from the floor.
Headlights are adjusted by turning screws 2 and 5 (see fig. 7-27), which rotate the optical element in the vertical and horizontal planes.
Pic. 7-27. Headlight adjusting screws:
1 - turn signal lamp socket;
2 - screw for adjusting the light beam of the headlight in the horizontal direction;
3 - holder;
4 - cover;
5 - screw for adjusting the light beam of the headlight in the vertical direction;
6 - low beam lamp (or distant) Sveta;
7 - dipped lamp block (or distant) Sveta;
8 - latch;
9 - dipped lamp socket (or distant) Sveta.
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 the 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 is 0.19 MPa (1.9 kgf/cm2), and then rock the car from the side to set the suspension springs.
Draw vertical lines on the screen: axial 0 and lines A, B, C and E passing through the points corresponding to the centers of the headlights. These lines must be symmetrical about the center line of the vehicle. At a height h corresponding to the distance of the headlight centers from the floor, draw line 1 and 55 mm below it, line 2 of the centers of the light spots.
Set the headlight range adjustment control on the instrument panel to the correct position for the single driver vehicle.
Turn on the low beam. Sequentially, first for the right headlight (the left one is closed by something or disconnected from the wiring harness), and then for the left (right closed) adjust with screws 2 and 5 (see fig. 7-27) headlight beams. In this case, the displacement of the headlight beam must not exceed±3°in the vertical plane and±2°in the horizontal plane.
For correctly adjusted headlights, the upper border of the light spots must coincide with line 2 (see fig. 7-26), and the points of intersection of the horizontal and inclined sections of light spots - with lines A and B.