Industrial
Allis Chalmers HD20
The Allis Chalmers HD20 is a powerful tractor built for heavy-duty work. It has a big diesel engine made by General Motors with 6 cylinders. The engine is liquid-cooled and has a blower to help it run better. It can hold 60 quarts of coolant to keep it from getting too hot. This tractor is big and strong. It's 191 inches long and 95 inches tall. The HD20 weighs a lot - 41,000 pounds! It has a special transmission called a torque converter with 2 forward gears and 1 reverse gear. The tractor uses a 24-volt electrical system to start up and run its parts. The HD20 is made to work hard in tough conditions. Its engine is built to last, with a compression ratio of 18.0:1. While we don't know exactly how much power it has, its size and weight show it's meant for big jobs. Farmers and construction workers who need a strong, reliable tractor might find the Allis Chalmers HD20 a good choice for their work.
ManufacturerAllis ChalmersEngine6-cylTransTorque converter
Quick specs
- Category
- Industrial
- Operating Weight
- 41,000 lb
- Transmission
- Torque converter
Overview
About the Allis Chalmers HD20
The Allis Chalmers HD20 is a powerful tractor built for heavy-duty work. It has a big diesel engine made by General Motors with 6 cylinders. The engine is liquid-cooled and has a blower to help it run better. It can hold 60 quarts of coolant to keep it from getting too hot. This tractor is big and strong. It's 191 inches long and 95 inches tall. The HD20 weighs a lot - 41,000 pounds! It has a special transmission called a torque converter with 2 forward gears and 1 reverse gear. The tractor uses a 24-volt electrical system to start up and run its parts. The HD20 is made to work hard in tough conditions. Its engine is built to last, with a compression ratio of 18.0:1. While we don't know exactly how much power it has, its size and weight show it's meant for big jobs. Farmers and construction workers who need a strong, reliable tractor might find the Allis Chalmers HD20 a good choice for their work.
Full specifications
Every recorded spec
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | HD20 |
| Category | Industrial tractor |
| Operating weight | 41,000lb |
Engine
| Make | General Motors |
|---|---|
| Cylinders | 6 |
| Displacement | 660ci |
| Bore | 5in |
| Stroke | 5.6in |
Transmission
| Type | Torque converter |
|---|---|
| Forward gears | 2 |
| Reverse gears | 1 |
Dimensions
| Length | 191in |
|---|---|
| Height | 95in |
| Operating weight | 41,000lb |
Capacities
| Cooling system | 15gal |
|---|
Head to head
HD20 vs. Industrial median
How the Allis Chalmers HD20 compares to other Industrial tractors
| Spec | This model | Industrial median | Difference | Percentile |
|---|---|---|---|---|
| Engine Displacement | 660 ci | 284 ci | +132% | 76th |
| Cylinders | 6 | 4 | +50% | 88th |
| Forward Gears | 2 | 5 | -60% | 1st |
| Operating Weight | 41,000 lb | 9,127 lb | +349% | 97th |
| Length | 191 in | 125 in | +53% | 86th |
| Height | 95 in | 74.9 in | +27% | 77th |
Medians and percentiles are computed from the industrial tractors in our database with a recorded value for each spec (sample sizes 38–55 models).
Compare to tractors with similar specs
Commonly compared Allis Chalmers tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers HD11AG | 130 hp | 23,000 lb | — | Compare → |
| Allis Chalmers HD11AG Series B | 126.5 hp | 25,000 lb | — | Compare → |
| Allis Chalmers HD15 | — | 30,895 lb | — | Compare → |
| Allis Chalmers HD16A | 163 hp | 31,500 lb | — | Compare → |
| Allis Chalmers HD9 | — | 18,800 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Advance-Rumely 6A | — | 6,370 lb | — | Compare → |
| Advance-Rumely DoAll | — | 3,702 lb | — | Compare → |
| Advance-Rumely OilPull B 25/45 | — | 25,000 lb | — | Compare → |
| Advance-Rumely OilPull E 30/60 | — | 26,300 lb | — | Compare → |
| Advance-Rumely OilPull F 15/30 | — | 16,500 lb | — | Compare → |
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Gallery
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FAQ
Common questions
What engine configuration does the Allis Chalmers HD20 use?
The Allis Chalmers HD20 is equipped with a 6-cylinder engine displacing 660 ci.
How much does the Allis Chalmers HD20 weigh?
The Allis Chalmers HD20 weighs about 41,000 lb in operating condition.
What transmission is in the Allis Chalmers HD20?
Transmission on the Allis Chalmers HD20 is Torque converter, with 2 forward speeds.
What maintenance does the Allis Chalmers HD20 require?
Like any tractor, the Allis Chalmers HD20 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.