Spring strut, function - GF32.25-P-1000-03A
Model 220
The weight of the vehicle is carried by the compressible air (l) sealed into the air bellows of the spring struts. The rolling hose air bellows (h) is made of rubber. Under dynamic load during driving, the air bellows rolls up parallel with the axis of the spring strut, thus providing the necessary spring travel. The rollup zone on the spring strut is sealed off from the outside by a rubber boot (n) as a protection against dirt.
The vehicle level is raised/lowered by increasing/reducing the air pressure in the air chamber (l), which results in a lengthening/shortening of the spring strut (40).
The spring strut incorporates a residual pressure valve (k) which blocks off the pressure chamber in the spring strut in the direction of the supply line in the event of a pressure drop at or below a residual pressure of 4-5 bar.