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Allis Chalmers HD3

Allis Chalmers HD3 tractor
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The Allis Chalmers HD3 is a 1942 industrial crawler tractor built in Springfield, Illinois, USA. It was a limited-production wartime crawler with only 28 units built and is unrelated to the later Allis HD3 crawler. It features a Detroit Diesel 2-71 supercharged 2-cylinder liquid-cooled diesel engine with 142 ci (2.3 L) displacement. The tractor produces 35 hp (26.1 kW) at the drawbar and 43 hp (32.1 kW) at the belt. It has a crawler drive with an open operator station and weighs 7210 lbs (3270 kg) with a track gauge of 40 inches (101 cm).
Allis Chalmers HD3industrial crawler tractor1942 tractorDetroit Diesel 2-71 enginecrawler tractor specstractor data
Power-
Founded-
ModelHD3

Technical Specifications

Detailed specifications and technical data for Allis Chalmers HD3

Power

Belt (claimed):43 hp (32.1 kW)
Drawbar (claimed):35 hp (26.1 kW)

Engine

Type:supercharged diesel
Model:Detroit Diesel 2-71
Cooling:liquid-cooled
Cylinders:2-cylinder
Bore/Stroke:4.25x5.00 inches (108 x 127 mm)
Displacement:142 ci (2.3 L)

Dimensions

Gauge:40 inches (101 cm)
Weight:7210 lbs (3270 kg)

Mechanical

Drive:crawler
Operator station:Open operator station

Production

Year:1942
Notes:The limited-production wartime crawler is unrelated to the later Allis HD3 crawler.
Location:Built in Springfield, Illinois, USA
Total built:28
Manufacturer:Allis Chalmers