Tractor · 1951Unverified
Allis Chalmers HD20
Allis Chalmers HD20 — Agricultural Crawler tractor · 175 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
175 hp
Max power
87.0 kW
Weight
18597 kg
Hover a source tag to verify
Overview
ManufacturerAllis ChalmersReference
Agricultural Crawler tractorReference
Built in Springfield, Illinois, USAReference
Total built3,100Reference
DrivecrawlerReference
Open operator station.Reference
Engine
General Motors 10.8L 6-cyl dieselReference
Fuel tank454.2 LReference
Engine (net)130.5 kWReference
Drawbar (claimed)87.2 kWReference
Drawbar (tested)87.0 kWReference
General MotorsReference
blower dieselReference
6-cylinderReference
liquid-cooled 2-cycle vertical I-headReference
Displacement10.8 LReference
Bore/Stroke127 x 142 mmReference
Power (net)130.5 kWReference
Compression18.0:1Reference
Rated RPM1700Reference
Starter volts24Reference
Coolant capacity56.8 LReference
Max power87.0 kWReference
Transmission
2-speed torque converterReference
Typetorque converterReference
Gears2 forward and 1 reverseReference
Dimensions
Weight18597 kgReference
24-inch tracksReference
Length485 cmReference
Width277 cmReference
Height241 cmReference
HD20 Serial Numbers
Location:Steering clutch housing or instrument panelReference
19513001Reference
19523828Reference
19534923Reference
19545737Reference
FAQ: How to read a serial number table.Reference
Allis Chalmers HD20 Tracks
Width60 cmReference
Length on ground270 cmReference
Area on ground3.3 m²Reference
Ground pressure0.6 barReference
Test results
Diesel 2-speed crawlerJuly 20 - August 3, 1951Link: Nebraska Tractor Test 465 fileReference
Drawbar performanceReference
Max pull18743 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.