Allis Chalmers HD11
The Allis Chalmers HD11 is a powerful crawler tractor built for tough agricultural work. Made from 1955 to 1965, this tractor has tracks instead of wheels, making it great for working in muddy or uneven fields. It's a big machine, measuring 154 inches long, 40 inches wide, and 84 inches tall, with a heavy weight of 21,000 pounds. The HD11 is powered by a strong diesel engine made by Allis Chalmers. This engine has 6 cylinders and can produce 110 horsepower, which is above average for tractors of its time. It has a liquid-cooled system that holds 44 quarts of coolant to keep the engine running smoothly. The tractor has an open operator station, meaning the driver sits outside without a cab. It uses an electric starter to get the engine going and has special band brakes to help it stop. With 6 forward gears and 3 reverse gears, the HD11 can handle different speeds for various farming tasks.

Quick specs
- Category
- Crawler
- Engine Power Output
- 110hp
- Operating Weight
- 21,000 lb
- Transmission
- Sliding Gear
At a glance
How the HD11 compares
vs. Crawler medianDistribution
Engine Power (hp)
Across all Crawler tractors
This model
The HD11 ranks at the 46th percentile for engine power among recorded crawler tractors.
Overview
About the Allis Chalmers HD11
The Allis Chalmers HD11 is a powerful crawler tractor built for tough agricultural work. Made from 1955 to 1965, this tractor has tracks instead of wheels, making it great for working in muddy or uneven fields. It's a big machine, measuring 154 inches long, 40 inches wide, and 84 inches tall, with a heavy weight of 21,000 pounds. The HD11 is powered by a strong diesel engine made by Allis Chalmers. This engine has 6 cylinders and can produce 110 horsepower, which is above average for tractors of its time. It has a liquid-cooled system that holds 44 quarts of coolant to keep the engine running smoothly. The tractor has an open operator station, meaning the driver sits outside without a cab. It uses an electric starter to get the engine going and has special band brakes to help it stop. With 6 forward gears and 3 reverse gears, the HD11 can handle different speeds for various farming tasks.
Full specifications
Every recorded spec
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | HD11 |
| Category | Crawler tractor |
| Type | Crawler |
| Years built | 1955–1965 |
| Operating weight | 21,000lb |
Engine
| Make | Allis Chalmers |
|---|---|
| Model | HD-516 |
| Power | 110hp |
| Cylinders | 6 |
| Displacement | 516ci |
| Bore | 4.45in |
| Stroke | 5.55in |
Transmission
| Type | Sliding Gear |
|---|---|
| Forward gears | 6 |
| Reverse gears | 3 |
Chassis & drive
| Chassis | Crawler |
|---|---|
| Brakes | Contracting band |
| Cab | Open operator station |
Dimensions
| Length | 154in |
|---|---|
| Width | 40in |
| Height | 84in |
| Operating weight | 21,000lb |
Capacities
| Cooling system | 11gal |
|---|
Head to head
HD11 vs. Crawler median
How the Allis Chalmers HD11 compares to other Crawler tractors
| Spec | This model | Crawler median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 110 hp | 200 hp | -45% | 46th |
| Engine Displacement | 516 ci | 468 ci | +10% | 58th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 6 | 10 | -40% | 34th |
| Operating Weight | 21,000 lb | 23,320 lb | -10% | 48th |
| Length | 154 in | 146 in | +5% | 54th |
| Width | 40 in | 79.5 in | -50% | 6th |
| Height | 84 in | 90.6 in | -7% | 43rd |
Medians and percentiles are computed from the crawler tractors in our database with a recorded value for each spec (sample sizes 134–192 models).
Compare to tractors with similar specs
Commonly compared Allis Chalmers tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers 7000 | 117 hp | 9,550 lb | 1975–1979 | Compare → |
| Allis Chalmers 160 | 40 hp | 4,674 lb | 1970–1975 | Compare → |
| Allis Chalmers 170 | — | 5,720 lb | 1968–1973 | Compare → |
| Allis Chalmers HD10 | — | 20,380 lb | — | Compare → |
| Allis Chalmers HD14 | — | 28,750 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO LT90A | 110 hp | 8,820 lb | — | Compare → |
| Agrinar T-110 | 110 hp | — | — | Compare → |
| Apollo 1104 | 110 hp | 10,710 lb | — | Compare → |
| AGCO LT85A | 110.1 hp | 10,605 lb | — | Compare → |
| Agco LT95A | 111.6 hp | 11,070 lb | — | Compare → |
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Gallery
Allis Chalmers HD11 photos





FAQ
Common questions
When was the Allis Chalmers HD11 in production?
Allis Chalmers HD11 production started in 1955 and ended in 1965.
How much horsepower does the Allis Chalmers HD11 have?
The Allis Chalmers HD11 produces 110 hp from its 6-cylinder engine. Engine displacement is 516 ci.
How much does the Allis Chalmers HD11 weigh?
The Allis Chalmers HD11 weighs about 21,000 lb in operating condition.
What transmission is in the Allis Chalmers HD11?
Transmission on the Allis Chalmers HD11 is Sliding Gear, with 6 forward speeds.
What maintenance does the Allis Chalmers HD11 require?
Like any tractor, the Allis Chalmers HD11 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.




