CLUTCH OPERATION DEVICE

PROBLEM TO BE SOLVED: To provide a relatively low cost clutch operation device enabling to relatively easily change over clutch operation by a controller and clutch operation by a clutch pedal device. SOLUTION: The clutch operation device is provided with a power cylinder 22 engaging/disengaging a clutch 13 by supply/discharge of compressed air, a hydraulic-pneumatic pressure conversion valve 23 supplying compressed air to a power cylinder 22 when working fluid of predetermined quantity is supplied via a main oil passage 24 and discharging compressed air from the power cylinder 22 when the working fluid is discharged, a hydraulic pressure clutch actuator 31 supplying and discharging working fluid of predetermined quantity to and from a first oil passage 33 by a command of a controller 27, a clutch pedal device 41 supplying working fluid of predetermined quantity to a second oil passage 42 by step-in of the clutch pedal 41a, a selector solenoid valve 51 connecting either of the first oil passage 3 or the second oil passage 42 to the main oil passage 24, and a control switch 52 controlling the selector solenoid valve 51. COPYRIGHT: (C)2006,JPO&NCIPI