A hydraulic section (1) for actuating a vehicle clutch having a master cylinder (3), a slave cylinder (2) and a hydraulic line (4) which connects both cylinders and is divided into two line sections by a ventilating device (5). The line sections of the hydraulic line which act as a siphon (4a) and a riser (4b) are guided together to said ventilating device (5), such that they are spaced apart from one another, in a chamber which is formed from at least one of these ends.