Tractor · 1951Unverified
Allis Chalmers HD9
Allis Chalmers HD9 — Agricultural Crawler tractor · 70 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
70 hp
Max power
50.3 kW
Weight
8527 kg
Hover a source tag to verify
Overview
ManufacturerAllis ChalmersReference
Agricultural Crawler tractorReference
Built in Springfield, Illinois, USAReference
Total built5,850Reference
DrivecrawlerReference
Open operator station.Reference
Engine
General Motors 4.7L 4-cyl dieselReference
Fuel tank208.2 LReference
Drawbar (claimed)52.2 kWReference
Belt (claimed)62.6 kWReference
Drawbar (tested)50.3 kWReference
Belt (tested)59.0 kWReference
General MotorsReference
blower dieselReference
4-cylinderReference
liquid-cooled 2-cycle vertical I-headReference
Displacement4.7 LReference
Bore/Stroke108 x 127 mmReference
Compression16.0:1Reference
Rated RPM1600Reference
Starter volts12Reference
Oil capacity15.1 LReference
Coolant capacity27.4 LReference
Belt power (max)59.0 kWReference
Max power50.3 kWReference
Transmission
6-speed gearReference
TypegearReference
Gears6 forward and 3 reverseReference
Oil capacity25.6 LReference
Dimensions
Weight8527 kgReference
16-inch tracksReference
Length381 cmReference
Width241 cmReference
Height185 cmReference
Shipping weight8527 kgReference
Gauge187 cmReference
HD9 Serial Numbers
Location:Steering clutch housing or instrument panelReference
19501Reference
19512Reference
1952738Reference
19531883Reference
19543591Reference
19555209Reference
Final5850Reference
FAQ: How to read a serial number table.Reference
Allis Chalmers HD9 Tracks
Width40 cmReference
Width50 cmReference
Test results
Diesel 6-speed crawlerJuly 17 - 28, 1951Link: Nebraska Tractor Test 463 fileReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull8634 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.