The invention relates to a method for controlling at least one
torque transmission device (D1, D2) by means of a hydraulic
system (1), which has a pump unit (7) in which an electronically controlled
electric motor (12) drives a pump (13) which delivers a volume flow into a pressure line (10), a
system pressure regulating valve (11) arranged between an oil
sump (8) and the pressure line (10), a slave cylinder (3, 4) and a control pressure regulating valve (14, 15) which loads the slave cylinder (3, 4) and which has a connection to the pressure line (10) and a connection to the oil
sump (8). In order that the pump unit (7) can be designed small and that the at least one
torque transmission device (D1, D2) can be actuated efficiently, in the case of unregulated closing of the
system pressure regulating valve (11) relative to the oil
sump (8) and unregulated complete opening of the control pressure regulating valve (14, 15) relative to the slave cylinder (3, 4), a pressure medium quantity which is predetermined for setting a contact point of the at least one
torque transmission device (D1, D2) is delivered to the slave cylinder (3, 4) for actuating the at least one torque transmission device (D1, D2), and after reaching the contact point the
system pressure regulating valve (11) and the control pressure regulating valve (14, 15) are operated in a regulated pressure manner until the at least one torque transmission device (D1, D2) is completely actuated.