Self bleeding system

An electrohydraulic clutch assembly comprising:

• an input member and coaxially disposed output member;
• a bi-directional electric motor;
• a gear train driven by said electric motor;
• a ball screw driven by said gear train and driving a master piston moveable within a passage, wherein said master piston displaces hydraulic fluid;
• a check valve disposed in said passage;
• and
• a friction clutch pack operably disposed between said input member and said output member and said output member and actuated by said hydraulic fluid.

An electrohydraulic clutch having a self-bleeding mechanism, comprising:

• an input shaft selectively coupled to an output shaft through the use of a clutch pack;
• a ball screw assembly used for displacing a piston enclosed in a cylinder, with said piston displaces hydraulic fluid in said cylinder;
• a series of gears operably associated with said ball screw assembly, and a bi-directional motor;
• and
• an automatic self-bleeding valve assembly operably associated with said cylinder and said piston.