free to independently rotate or stop rotating via the bearing connection 270 as previously described fluid may enter the chamber 264 through the fluid channel 262 in this embodiment the fluid receiving chamber 264 is at least partially defined by the space between the output member 222 and the hub 242 the fluid may pass through small gaps in the spline connection between the first spline member 224 and the second spline member 244 when a predetermined amount of fluid pressure has built up in the chamber 264 the output member 222 is forced in an axial forward direction away from the drive pulley 100 thus overcoming the bias of the spring 280 to urge the piston portion 220 toward the drive pulley 100 still referring to fig1 2 the fluid receiving chamber 264 is disposed internally in the clutch member 200 in this embodiment the fluid in the chamber 264 may have only one possible leak path which is along the circumferential surface 249 of the hub 242 a seal 290 is disposed along the periphery of the leak path between the circumferential surface 249 of the hub 242 and the output member 220 the seal 290 is positioned as such to prevent fluid leakage through the leak path thus a fluid leak may be quickly detected and repaired by checking the seal 290 at the circumferential surface 249 and by checking the mechanical seal at the face seal.