A control system for a vehicle transmission in which the clutch is controlled by an actuator including a cylinder to which fluid can be supplied by way of valves. The valves are controlled to give at least two phases of clutch engagement. In the first phase the valves are controlled by a ...
4. The device as claimed in claim 2 or 3, characterized in that the internal shoulder (98) intersects an at least approximately radial inlet duct (28) for hydraulic fluid so that the fastening member (96) is disengageable by means of a tool introduced through this inlet duct (28). ...