Hydraulic apparatus for the automatic correction of the inclination of the headlights of a motor vehicle

In a hydraulic apparatus having means for automatically adjusting the positions of the headlights of a motor vehicle as a dependent function of the load on the axles, in which the movement of the front and rear axles relative to the sprung motor vehicle body are oppositely sensed by means of a metering piston of a level sensor installed in proximity to each vehicle axle and are transmitted by means of positioning elements to the headlight housings, the further improvement wherein each metering piston in said level sensors includes a fork piece forming a pair of parallel and adjacently disposed positioning pistons and a pair of working chambers each adjacent one of said positioning pistons, two separate hydraulic lines each arranged to connect one of said pair of working chambers in said rear axle level sensor to one of said pair of working chambers in said front axle level sensor and two separate hydraulic lines each arranged to connect one of said pair of working chambers in said front axle level sensor to said means for adjusting the positions of a respective one of said headlights.