To efficiently cool and lubricate a clutch/brake assembly without requiring an additional lubrication oil source by opening the recirculation flow of a lubrication oil so as to have access to the clutch/brake assembly.

A pressurizing device 52 is hydraulically communicated to a press lubrication oil pool 56. The lubrication oil pressurized by the pressurizing device 52 is carried to a first quill lubrication oil port 54. Pressurized lubrication oil is caused to flow to the radial direction outer part of a second bronze bushing 48 through a quill 40 and is further sent to the radial direction inner part of a flywheel quill bushing 58 through a second quill lubrication oil port 60. Thus, an oil film is generated between the flywheel quill bushing 58 and the quill 40. The pressurized lubrication oil is fed to the radial direction inner part of the second bronze bushing 48 by the second quill lubrication oil port 60. Thus, an oil film is generated between the radial direction inner part of the second bronze bushing 48 and a drive shift 46. Further, the pressurized oil from the second quill lubrication part 60 is carried to a drive shaft lubrication oil port 66.