The International Harvester TD-40 Tractor / Bulldozer was produced from 1933 through 1939, the first IH diesel. They were procured by the U.S. Army in small numbers and were used through WW II. The vehicle was called the McCormick Deering TD-40 TracTracTor.
International Harvester TD-40 Characteristics
12,400 lbs (5624 kg)
140 inches (355 cm)
64 inches (162 cm)
IH 4 cyl diesel
5 fwd / 1 rev
International TD-40 bulldozer knocking down trees, cutting a roadway for the Alcan Highway, 1942. Stack tube on side of engine goes through the cover, one characteristic of the TD-40. Using the Bucyrus-Erie blade that was supplied for the TD-40.