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Tractor · 1955Unverified

Allis Chalmers HD11

Allis Chalmers HD11 — Agricultural Crawler tractor · 110 hp. Reference specifications; pending source verification.

The Allis Chalmers HD11 is a tractor with a rated output of 110 hp, situated approximately in the middle of its class in terms of power. The HD11 was manufactured from 1955 to 1966. It features a 6-cylinder diesel liquid-cooled engine driving a tracked undercarriage with a 6-speed gearbox. The listed weight of the HD11 ranges from 21000 to 22200 pounds and is suitable for tasks covering approximately 200–800 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power
110 hp
Max power
55.0 kW
Weight
21000 to 22200 pounds

Catalogue coverage

Variants represented
2
Richest spec table
72 rows
Recorded power
110 hp
Transmissions
6-speed sliding gear
Production years
1955-1966
Verified variants
0

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerAllis ChalmersReference
Agricultural Crawler tractorReference
Built in Springfield, Illinois, USAReference
DrivecrawlerReference
Contracting band brakesReference
Open operator station.Reference

Variants

HD11S6-roller agriculturalReference
HD11ES7-roller agriculturalReference
HD11B6-roller industrialReference

Engine

Allis-Chalmers 8.5L 6-cyl dieselReference
Fuel tank227.1 LReference
Engine (gross)82.0 kWReference
Engine (net)73.8 kWReference
Drawbar (claimed)57.4 kWReference
Belt (claimed)70.1 kWReference
Drawbar (tested)55.0 kWReference
Belt (tested)66.9 kWReference
Allis-Chalmers HD-516Reference
dieselReference
6-cylinderReference
liquid-cooled vertical I-headReference
Displacement8.5 LReference
Bore/Stroke113 x 141 mmReference
Power (net)73.8 kWReference
Power (gross)82.0 kWReference
Air cleaneroil bathReference
Compression15.0:1Reference
Rated RPM1800Reference
Starter volts24Reference
Oil capacity16.1 LReference
Coolant capacity41.6 LReference
Belt power (max)66.9 kWReference
Max power55.0 kWReference

Transmission

6-speed sliding gearReference
Typesliding gearReference
Gears6 forward and 3 reverseReference

Dimensions

Weight21000 to 22200 poundsReference
16-inch tracksReference
Length391 cmReference
Height (hood)213 cmReference
Gauge187 cmReference
10069 kgReference
HD11S Shipping9525 kgReference
HD11ES Shipping9933 kgReference

HD11 Serial Numbers

Location:Serial number on the rear of the right-side final drive.Reference
1955101Reference
19561058Reference
19573255Reference
19584115Reference
19594768Reference
19605802Reference
19616448Reference
19626995Reference
19637870Reference
19648606Reference
196510533Reference
196611451Reference
FAQ: How to read a serial number table.Reference

Electrical

GroundpositiveReference
Batteries2Reference
Battery volts12Reference

Allis Chalmers HD11 Tracks

Width40 cmReference
Length on ground217 cmReference
Area on ground1.8 m²Reference
HD11E width40 cmReference
HD11E length on ground244 cmReference
HD11E area on ground2.0 m²Reference

Test results

Diesel 6-speed crawlerJuly 9 - 13, 1956Link: Nebraska Tractor Test 581 fileReference
Belt fuel use (max)26.1 l/hourReference
Drawbar performanceReference
Max pull9284 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.

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