Allis Chalmers HD11
The Allis Chalmers HD11 is a tractor produced by Allis Chalmers. It is equipped with a 516 ci 8.5 L engine. The rated power output is 99 hp 73.8 kW. Transmission: 6 forward and 3 reverse. Drive type: crawler. Operating weight: 21000 to 22200 pounds.
Engine Power
99 hp
73.8 kW
Drive & Traction
crawler
Fuel & Capacities
60 gal
227.1 L
Transmission
6 forward and 3 reverse
Operating Weight
21000 to 22200 pounds
Allis Chalmers HD11 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
![]() | 1955 - 1966
Agricultural Crawler tractor |
|---|---|
1955 - 1966 | |
Agricultural Crawler tractor | |
Production | |
|---|---|
Manufacturer | Allis Chalmers |
Agricultural Crawler tractor | |
Built in Springfield, Illinois, USA | |
Variants | |
|---|---|
HD11S | 6-roller agricultural |
HD11ES | 7-roller agricultural |
HD11B | 6-roller industrial |
Allis Chalmers HD11 Engine | |
|---|---|
Allis-Chalmers 8.5L 6-cyl diesel | |
Fuel tank | 60 gal
227.1 L |
Engine details ... | |
Allis Chalmers HD11 Transmission | |
|---|---|
6-speed sliding gear | |
Transmission details ... |
Allis Chalmers HD11 Power | |
|---|---|
Engine (gross) | 110 hp
82.0 kW |
Engine (net) | 99 hp
73.8 kW |
Drawbar (claimed) | 77 hp
57.4 kW |
Belt (claimed) | 94 hp
70.1 kW |
Drawbar (tested) | 73.8 hp
55.0 kW |
Belt (tested) | 89.75 hp
66.9 kW |
Performance test details ... | |
Mechanical | |
|---|---|
Drive | crawler |
Contracting band brakes | |
Open operator station. | |
Dimensions & Tracks | |
|---|---|
Weight | 21000 to 22200 pounds |
16-inch tracks | |
Full dimensions and tracks ... | |
Electrical | |
|---|---|
Ground | positive |
Batteries | 2 |
Battery volts | 12 |
References | |
|---|---|
![]() | |
Engineering-in-Action published in 1956, by Allis Chalmers | |
Farm Crawlers published in 1962, by Allis Chalmers | |
Crawler Tractor Farming published by Allis Chalmers | |
Big Power Farming published in 1965, by Allis Chalmers | |
HD-11 Crawler Tractor published in 1957, by Allis Chalmers |
Engine
Engine Detail — 516 ci / 8.5 L Diesel
Manufacturer | Allis-Chalmers HD-516 |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled vertical I-head |
Displacement | 516 ci
8.5 L |
Bore/Stroke | 4.4375x5.5625 inches
113 x 141 mm |
Power (net) | 99 hp
73.8 kW |
Power (gross) | 110 hp
82.0 kW |
Air cleaner | oil bath |
Compression | 15.0:1 |
Rated RPM | 1800 |
Starter volts | 24 |
Oil capacity | 17 qts
16.1 L |
Coolant capacity | 44 qts
41.6 L |
Allis Chalmers HD11 Engine | |
|---|---|
![]() |
Transmission
Transmission — 6 forward and 3 reverse sliding gear
Type | sliding gear |
Gears | 6 forward and 3 reverse |
![]() | |
Dimensions
Allis Chalmers HD11 Tracks | |
|---|---|
Width | 16 inches
40 cm |
Length on ground | 85.75 inches
217 cm |
Area on ground | 2744 in²
1.8 m² |
HD11E width | 16 inches
40 cm |
HD11E length on ground | 96.25 inches
244 cm |
HD11E area on ground | 3080 in²
2.0 m² |
Dimensions | |
|---|---|
Length | 154 inches
391 cm |
Height (hood) | 84 inches
213 cm |
Gauge | 74 inches
187 cm |
Allis Chalmers HD11 Weight | |
|---|---|
22200 lbs
10069 kg | |
HD11S Shipping | 21000 lbs
9525 kg |
HD11ES Shipping | 21900 lbs
9933 kg |
Tests
Nebraska Tractor Test 581 | |
|---|---|
Diesel 6-speed crawler
July 9 - 13, 1956
Link: Nebraska Tractor Test 581 file | |
Belt power (max) | 89.75 hp
66.9 kW |
Belt fuel use (max) | 6.9 gal/hour
26.1 l/hour |
Drawbar performance | |
Max power | 73.8 hp
55.0 kW |
Max pull | 20468 lbs
9284 kg |
Gear 1 used for pull test. | |
Photos
Allis Chalmers HD11 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Allis Chalmers HD11.
Converted Equivalents:
Horsepower (HP)99 hp
Kilowatts (kW)73.8 kW
Metric Horsepower (PS / CV)100.4 PS






