The Caterpillar D7 series medium bulldozer began service with the U.S. military during World War II. Its primary role is earthmoving but it was used in a host of other roles e.g. mine clearing with a special flail adapter kit.
The D7 dozer is the primary earthmover for construction of survivability positions and antitank ditches. It had to be transported by trailer due to its poor mobility.
Caterpillar D7 Bulldozer Variants
The Cat D7 bulldozer has had a long service life in the U.S. military, including these models:
During WW II, the D7 was one of the bulldozers collectively known as "Tractor, Heavy, M1." Equivalent tractors were produced during WW II by Allis-Chalmers Co. (Model HD10W, G-98) and International Harvester Co. (Model TD18, G-101). About one thousand Caterpillar D7s were also produced by American Car & Foundry under license when WW II military orders exceeded Caterpillar's capacity.
The D7 dozer is the primary earthmover for construction of survivability positions and antitank ditches. It had to be transported by trailer due to its poor mobility.
Caterpillar D7 Bulldozer Variants
The Cat D7 bulldozer has had a long service life in the U.S. military, including these models:
- D7 7M series, manufactured 1940-1944, approx 10,000 produced. D8800 engine, 74 inch track gauge
- D7A 1T1001 series, manufactured 1943, 138 produced. Armor plated 7M with twin hydraulic cylinders, rear mounted Hyster D7N winch
- D7 3T series, manufactured 1944-1955, over 28,000 produced
- D7 4T series, manufactured 1944-1945
- D7 6T series, manufactured 1945
During WW II, the D7 was one of the bulldozers collectively known as "Tractor, Heavy, M1." Equivalent tractors were produced during WW II by Allis-Chalmers Co. (Model HD10W, G-98) and International Harvester Co. (Model TD18, G-101). About one thousand Caterpillar D7s were also produced by American Car & Foundry under license when WW II military orders exceeded Caterpillar's capacity.
The Museums Display Piece:
4Mil Models D7 Armoured Bulldozer |