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Allis Chalmers

Allis Chalmers HD20

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.
Power175 hp
Founded1951 - 1954
ModelHD20
Allis Chalmers HD20 tractor
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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
Typeblower diesel
Coolingliquid-cooled 2-cycle vertical I-head
Cylinders6-cylinder
Fuel tank120 gal (454.2 L)
Rated RPM1700
Bore/Stroke5.00x5.60 inches (127 x 142 mm)
Compression18.0:1
Power (net)175 hp (130.5 kW)
Displacement660 ci (10.8 L)
ManufacturerGeneral Motors
Starter volts24
Coolant capacity60 qts (56.8 L)
Dimensions
Height95 inches (241 cm)
Length191 inches (485 cm)
Weight41000 lbs (18597 kg)
Mechanical
Drivecrawler
Operator stationOpen operator station
Production
TypeAgricultural Crawler tractor
Built inSpringfield, Illinois, USA
Total built3,100
Years produced1951 - 1954
Transmission
Typetorque converter
Gears2 forward and 1 reverse
Serial Numbers
19513001
19523828
19534923
19545737
LocationSteering clutch housing or instrument panel

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