To improve the cooling efficiency of an intercooler by facilitating removal of dust adhered to the intercooler and by facilitating assembly and maintenance.

A tractor includes an engine room in which the intercooler 12 is provided on a frame 21 with a hinge 24, which is arranged before an engine through a partition wall. The intercooler is provided at an upper part on the frame with the hinge and the hinge allows a lower side of the intercooler to rotate vertically. Therefore, removed dust is easily discharged downward, assembly or maintenance such as replacement and connection of piping is easy because the assembly or maintenance such as replacement and connection of piping can be performed at the upper part of the intercooler, and the cooling efficiency of the intercooler can be improved.