Allis-Chalmers Co. HD10W

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: 6 Apr 1941 Operation Marita: Germans invade Greece. More ↓
6 Apr 1941 Axis armies from Germany, Italy, and Bulgaria invade Yugoslavia; Luftwaffe bombs Belgrade.
6 Apr 1945 Yugoslav Partisans liberate Sarajevo from the troops of Nazi Germany who then withdraw from Bosnia.
6 Apr 1945 Japanese battleship Yamato and supporting ships sunk 200 miles [320 km] north of Okinawa while enroute there to relieve increasingly desperate defenders [6-7 Apr].
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.