Pic. 7-28. Adjustment of fog lamps on the screen:
1 - reference axis of the light device (lights);
2 - horizontal (left) part of the cut-off line;
3 - oblique (right) part of the cut-off line;
4 - vertical plane passing through the reference axis;
5 - a plane parallel to the plane of the working platform on which the car is installed;
6 - screen plane;
7 - the position of the reference point for measuring the luminous intensity of the fog lamps in the direction of 3°upwards;
8, 9 - coordinates of points for measuring the position of the cut-off line in the vertical plane;
"TO" - distance across the screen from the projection of the optical center of the headlight to the position of the cut-off line of the fog lamp beam (200 mm);
"H" - distance from the projection of the optical center of the headlight to the plane of the working platform;
"U", "S" - coordinates of points for measuring the position of the cut-off line in the horizontal and vertical planes, respectively (values "U" < 600 mm; "S" = 174.5 mm).
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 10 m from the screen (a 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 0.19 MPa (1.9 kgf/cm2), and then press the car suspension 2-3 times to self-install its components.
Check and, if necessary, adjust the direction of the fog lamps. In this case, the upper cut-off boundary of the fog lamp beam must be parallel to the plane of the working platform on which the vehicle is installed.
The headlights are adjusted by turning the screw 1 (pic. 7-29), which rotates the optical element in the horizontal plane.
Pic. 7-29. Fog light adjustment:
1 - location of the adjusting screw;
2 - fog lamp;
3 - front bumper.
The luminous intensity of fog lamps, measured in a vertical plane passing through the reference axis, must not exceed 625 cd in the direction of 3°upwards from the position of the cut-off line. If the luminous intensity does not match the above value, re-adjust at least 0.5% in the vertical direction from the 69' angle value and measure the luminous intensity.