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Allis Chalmers HD20

Allis Chalmers HD20 tractor
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The Allis Chalmers HD20 is an agricultural crawler tractor produced from 1951 to 1954. It was built in Springfield, Illinois, USA, with a total production of 3,100 units. Powered by a General Motors 10.8L 6-cylinder blower diesel engine, it delivers 175 hp net power. The tractor features a 2-speed torque converter transmission with 2 forward and 1 reverse gears. It has a crawler drive and an open operator station. The HD20 weighs 41,000 lbs and measures 191 inches in length and 95 inches in height. Fuel capacity is 120 gallons. Serial numbers are located on the steering clutch housing or instrument panel.
Allis Chalmers HD20tractorcrawler tractorGeneral Motors engine175 hptorque converter transmissionagricultural tractortractor specifications
Power175 hp
Founded1951 - 1954
ModelHD20

Technical Specifications

Detailed specifications and technical data for Allis Chalmers HD20

Power

Engine (net):175 hp (130.5 kW)
Drawbar (tested):116.7 hp (87.0 kW)
Drawbar (claimed):117 hp (87.2 kW)

Engine

Type:blower diesel
Cooling:liquid-cooled 2-cycle vertical I-head
Cylinders:6-cylinder
Fuel tank:120 gal (454.2 L)
Rated RPM:1700
Bore/Stroke:5.00x5.60 inches (127 x 142 mm)
Compression:18.0:1
Power (net):175 hp (130.5 kW)
Displacement:660 ci (10.8 L)
Manufacturer:General Motors
Starter volts:24
Coolant capacity:60 qts (56.8 L)

Dimensions

Height:95 inches (241 cm)
Length:191 inches (485 cm)
Weight:41000 lbs (18597 kg)

Mechanical

Drive:crawler
Operator station:Open operator station

Production

Type:Agricultural Crawler tractor
Built in:Springfield, Illinois, USA
Total built:3,100
Years produced:1951 - 1954

Transmission

Type:torque converter
Gears:2 forward and 1 reverse

Serial Numbers

1951:3001
1952:3828
1953:4923
1954:5737
Location:Steering clutch housing or instrument panel