| 摘要 |
PURPOSE:To make it possible to easily adjust hydraulic pressure exerted to a pressure plate, by disposing a relief valve in a pressure oil passage connecting between a hydraulic pressure source and the pressure plate, downstream of a source pressure regulator. CONSTITUTION:A feed pipe 17 is inserted in a hollow section 3a formed in the inner section of a main shaft 3, extending along the center axis of the main shaft 3, and serves as a pressure oil passage 18a connecting between a hydraulic pressure source 7 and a hydraulic chamber 18 and constituting a part of the downstream section of a source pressure regulator 8. Further, a relief valve 23 communicated with the pressure oil passage 18a is disposed in the hollow section 3a of the main shaft 3 at a position opposing one end of the feed pipe 17. |
