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: 11 Nov 1940 55 Polish intellectuals murdered in Dachau concentration camp [near Munich], the first of many mass executions there.  More 
11 Nov 1940 Operation SWORDFISH: Raid on Taranto, Italy, the British Royal Navy's first all-aircraft naval attack, launching obsolete canvas planes from an aircraft carrier [11-12 Nov].
11 Nov 1942 Triggered by Operation Torch in N. Africa, Germans take control of all of Vichy France north of the Riviera.
11 Nov 1942 Allies capture Casablanca, Morocco during Operation Torch.
11 Nov 1942 In the aftermath of Operation Torch, Germany and Vichy France begin negotiations on the fate of the French fleet at Touson.
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

Weight 25,500 lbs
Length 14 ft 5.5 in
Width 8 ft 3 in
Height 8 ft 3 in
Engine GMC 4-71 RC14 in line 4 cyl diesel
Drawbar hp 82
Transmission 6 fwd/2 rev
Starter Electric
Winch 30,000 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.