Abstract: A cooling system that is capable of cooling a working vehicle, such as a wheeled loader, at a good efficiency and at a reduced level of noise. Plural radiators are arranged in a V-shaped form within a plane behind an engine mounted in the rear of the engine compartment of the vehicle. The radiators are spread a part rearwardly to form a space between them. A cooling fan is mounted in this space. The side surfaces of the radiators are provided with intake ports that are covered by openable side covers. The top of each intake ports is covered by a hood whose top surface can be tilted rearwardly and downwardly.