| 摘要 |
PROBLEM TO BE SOLVED: To provide a turn control device of a working vehicle capable or performing the turning operation of the working vehicle even if a detection means for detection the operating position of an electric motor fails while a turning operation can be easily performed without remarkably complicating a structure by enabling the device to be switched into a plurality of stages of turning operation states by the electric motor. SOLUTION: An operation to sequentially switch the plurality of stages of turning operation states with different turning forces can be performed by the operation of the electric motor M. When an operating position sensor AS for detecting the operating position of the electric motor M is normally operated, the operation of the electric motor M is controlled so that the operating position becomes an operating position corresponding to an instruction. When the operating position sensor AS is not normally operated, the electric motor M is operated only while a preset set time is elapsed when it is detected that turning is instructed.
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