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Allis-Chalmers Co. HD10W

The Allis-Chalmers HD10W Tractor / Bulldozer was introduced in 1940. About 1,760 HD-10W units were used by the U.S. military during WW II. The HD-10 continued to be manufactured until 1950.

The HD-10W was the wide-track version of the HD-10, with a 74 inch gauge. Models produced during WW II (until s/n 5574) had tracks with 32 links and five rollers. The reliability of the HD10W in military service moved Allis-Chalmers forward as a producer of tractors following WW II.

Spring 1944 photo of Allis-Chalmers Co. HD10W Tractors at the Engineer Depot, Thatcham, England in preparation for the D-Day invasion, 6 June 1944
Spring 1944 photo of Allis-Chalmers Co. HD10W Tractors at the Engineer Depot, Thatcham, England in preparation for the D-Day invasion, 6 June 1944.

Today in WW II: 31 Oct 1940 End of Battle of Britain, Hitler's air war against London, other British cities, and the Royal Air Force [RAF].  More 
31 Oct 1941 Destroyer USS Reuben James [DD-245] on Lend-Lease convoy escort duty sunk by German submarine U-552 with the loss of 100 of her crew, the first US naval casualty in the yet undeclared war.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

Allis-Chalmers Co. HD10W Tractor / Bulldozer (G-98)

During WW II, the Allis-Chalmers HD10W was one of the bulldozers collectively known as "Tractor, Heavy, M1." The Allis-Chalmers Co. HD10W was Ordnance G-98. Equivalent tractors were produced during WW II by Caterpillar Tractor Co. (Model D7, G-126) and International Harvester (Model TD-18, G-101).

Allis-Chalmers Co. HD10W Characteristics

Weight25,500 lbs
Length14 ft 5.5 in
Width8 ft 3 in
Height8 ft 3 in
EngineGMC 4-71 RC14 in line 4 cyl diesel
Drawbar hp82
Transmission6 fwd/2 rev
StarterElectric
Winch30,000 lbs

Manuals for the Allis-Chalmers Co. HD10W include:

  • TM 9-1787A, Heavy Tractor M1, Engine
  • TM 9-1787B, Heavy Tractor M1, Engine Accessories
  • TM 9-1787C, Heavy Tractor M1, Electrical System, Power Train, Frame, and Tracks

Allis-Chalmers Co. HD10W Tractor / Bulldozer
Allis-Chalmers Co. HD10W Tractor / Bulldozer.

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