Patent ID: 7828309

Claim:
A road-building machine, of which a left front wheel or caterpillar, right front wheel or caterpillar, left rear wheel or caterpillar and right rear wheel or caterpillar is connected to a chassis of the road-building machine by means of an actuating member and is adjustable in height with respect to a frame of the road-building machine, the individual actuating members being connected rigidly to the chassis and being positively coupled to one another in such a way that the left front wheel or caterpillar and the right rear wheel or caterpillar can be adjusted in height in the same direction and in the opposite direction to the right front wheel or caterpillar and the left rear wheel or caterpillar, and the actuating members being designed as double-acting working cylinders with a first and a second working chamber which are filled with a pressure medium, the working cylinders being connected to one another via coupling lines.