names of 5 ton trucks
The M939 Truck is a 5-ton 6Ã6 U.S. military heavy truck. Designed in the late 1970s to replace the M39 and M809 series of trucks, it has been in service ever since.ll models of the M939 share a common basic chassis, cab, and hood/fenders. The basic truck is a 6Ã6 (three axles, six wheels, all of which are powered) medium truck.