The Allis Chalmers HD-4 is a compact industrial tractor, with a rated output of 52 hp. It was manufactured from 1966 to 1969. The tractor is equipped with a 4-cylinder diesel liquid-cooled engine, which powers a tracked undercarriage with a 3-speed gearbox, and has a listed weight of 3855 kg. Its capabilities are suited to tasks covering approximately 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
52 hp
Weight
3855 kg
Catalogue coverage
Variants represented
2
Richest spec table
51 rows
Recorded power
52 hp
Recorded weight
3855 kg
Transmissions
3-speed torque converter
Production years
1966-1969
Verified variants
0
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Overview
ManufacturerAllis ChalmersReference
Industrial Crawler tractorReference
DrivecrawlerReference
External band brakesReference
Open operator station.Reference
Variants
H-4gasolineReference
HD-4dieselReference
HD-4 Loaderloader-crawlerReference
Engine
Allis Chalmers 3.3L 4-cyl dieselReference
Fuel tank68.1 LReference
Engine (gross)38.8 kWReference
Allis ChalmersReference
dieselReference
4-cylinderReference
liquid-cooledReference
Displacement3.3 LReference
Bore/Stroke99 x 108 mmReference
Power (gross)38.8 kWReference
Air cleanerdryReference
Compression16.25:1Reference
Rated RPM2100Reference
Torque191.9 NmReference
Torque RPM1600Reference
StarterelectricReference
Starter volts12Reference
Oil capacity7.6 LReference
Coolant capacity15.1 LReference
Transmission
3-speed torque converterReference
Typetorque converterReference
Gears3 forward and reverseReference
Clutchhydraulic discReference
Oil capacity11.6 LReference
PTO & Hydraulics
Pressure112.0 barReference
Pump flow56.8 lpmReference
Pump flow94.6 lpmReference
Dimensions
Weight3855 kgReference
12-inch tracksReference
Length276 cmReference
Width154 cmReference
Height (hood)187 cmReference
Clearance (drawbar)25 cmReference
Gauge129 cmReference
HD-4 Serial Numbers
Location:Serial number on the front of the crawler, below the grill.Reference
Allis Chalmers HD-4 Tracks
Width30 cmReference
Length on ground161 cmReference
Area on ground0.5 m²Reference
Long-track width30 cmReference
Long-track length on ground177 cmReference
Long-track area on ground0.5 m²Reference
Width25 cmReference
Width35 cmReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
