The independent front and rear wheels are linked in pairs by an anti-roll bar (9) to the middle of which is fixed the connecting rod to the slide of the height corrector (10).

The height corrector, according to the various positions of the slide (see Pl.9):

- establishes a connection:

accumulator - > suspension cylinders (inlet position fig.3)

or: suspension cylinders - > reservoir (return position fig.4)

- isolates the suspension cylinder (position neutral: fig.2bis-3bis-4bis).

When the load on the car increases, the body drops (as well as the suspension spheres connected to the body) and the piston compresses the gas contained in the spheres.

At the same time the anti-roll bar (9) turns, moving the connecting rod (10) which moves the slide of the corrector towards the front in the inlet position.

The high pressure coming from the pressure accumulator (5) (see Pl.11) feeds the suspension cylinder (full of fluid) until the car regains it's initial position. The slide is then moved again by the action of the anti-roll bar which replaces it in neutral position (closing the inlet).

Similarly, when the load decreases, the body goes up with the suspension spheres, and the gas decompresses itself. At the same time the action of the anti-roll bar moves the slide of the corrector towards the rear (return position) by the intermediary of the command rod (10).

The pressure remaining in the suspension spheres drives out the surplus fluid which returns to the tank until the car regains its initial position: closing the return (slide in neutral position).