| 摘要 |
A hydraulic disc coupling (4) for an AWD vehicle has means for supplying cooling and lubricating oil to the disc package (12) of the coupling, said means including a shut-off valve (32) for shutting-off said supply at will. The shut-off valve (32) comprises an axially movable valve slide (42), provided with a transverse valve flange (44) for cooperation with a valve seat (45) in the coupling housing, the slide being actuatable in a closing direction by spring force and in an opening direction by a hydraulically operated ball (47), having an actuation end position in a sealing ball seat (51). |
