Industrial Tractor · 1969Unverified
Allis Chalmers HD-21 Series B
Allis Chalmers HD-21 Series B — Industrial Crawler tractor · 273 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
273 hp
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Overview
ManufacturerAllis ChalmersReference
Industrial Crawler tractorReference
DrivecrawlerReference
Open operator station.Reference
Engine
Allis Chalmers 13.8L 6-cyl dieselReference
Engine203.6 kWReference
Allis Chalmers 21000 IIReference
turbocharged dieselReference
6-cylinderReference
liquid-cooledReference
Displacement13.8 LReference
Bore/Stroke133 x 165 mmReference
Power203.6 kWReference
StarterelectricReference
Starter volts24Reference
Transmission
2-speed power shiftReference
Typepower shiftReference
Gears2 forward and reverseReference
Dimensions
TracksReference
Electrical
Charging systemalternatorReference
Charging amps20Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.