The presented invention provides one kind of vehicle that can blow dust adhering to the filtering part of cover equipped on the outside of radiator for preventing the engine from overheating. The aforementioned working vehicle comprises engine (20), a cover (10a) having a filtering part and equipped on the outside of radiator (30), a radiator (30) for cooling the cooling water of the aforementioned engine (20), a single fan (40) equipped between the engine (20) and the radiator (30). Moreover, the aforementioned working vehicle also comprises the first transfer path, the aforementioned first transfer path transmits the power of engine to the fan through the first belt, and making the fan rotate clockwise； the second transfer path, the aforementioned second transfer path transmits the power of engine to the fan through the second belt, and making the fan rotatecounter clockwise； the power switching component that can transmit the power to the fan via the first belt or transmit the power to the fan via the second transfer path.本發明提供能夠噴吹配置於散熱器之外側的罩的過濾部上所附著的塵埃並防止發動機過熱的作業車輛。前述作業車輛，具備：散熱器(30)，對發動機(20)的冷卻水進行冷卻；罩(10a)，具有配置於前述散熱器(30)之外側的過濾部；以及單個風扇(40)，配置於發動機(20)與散熱器(30)之間；前述作業車輛還設置有：第一傳動路徑(W1)，將發動機(20)的動力經由第一帶(51)而傳動給風扇(40)，並使風扇(40)正轉；第二傳動路徑(W2)，將發動機(20)的動力經由第二帶(52)而傳動給風扇(40)，並使風扇(40)反轉；以及動力切換機構(60)，前述動力切換機構(60)切換從第一傳動路徑(W1)向風扇(40)傳動的狀態與從第二傳動路徑(W2)向風扇(40)傳動的狀態。
