Row CropPerformance profile
Allis Chalmers D21 Series II
The Allis Chalmers D21 Series II is a powerful row crop tractor made from 1965 to 1969. It has a strong 6-cylinder diesel engine that makes 121 horsepower. This engine is bigger than most other tractors, which helps it work hard in the fields. The tractor has two-wheel drive and power steering, making it easy to control. This tractor is built for serious farm work. It has a three-point hitch in the back for attaching tools. The hitch can handle big equipment, which is great for large farms. The D21 Series II also has a separate PTO that spins at 1000 rpm. This lets farmers use many different kinds of tools. The tractor is pretty heavy, weighing 9,502 pounds. It's big too, measuring over 13 feet long and almost 9 feet tall. Despite its size, it has an open operator station, so farmers can easily see around them while working.
ManufacturerAllis ChalmersPower121 hpEngine6-cylTransSliding gear with dry disc clutch
Quick specs
- Category
- Row Crop
- Engine Power Output
- 121hp
- Operating Weight
- 9,502 lb
- Transmission
- Sliding gear with dry disc clutch
At a glance
How the D21 Series II compares
vs. Row Crop medianDistribution
Engine Power (hp)
Across all Row Crop tractors
121 hp · 40th
This model
12
Median 138 hp
283
This modelRow Crop tractorsMediann = 1,206
The D21 Series II ranks at the 40th percentile for engine power among recorded row crop tractors.
Overview
About the Allis Chalmers D21 Series II
The Allis Chalmers D21 Series II is a powerful row crop tractor made from 1965 to 1969. It has a strong 6-cylinder diesel engine that makes 121 horsepower. This engine is bigger than most other tractors, which helps it work hard in the fields. The tractor has two-wheel drive and power steering, making it easy to control. This tractor is built for serious farm work. It has a three-point hitch in the back for attaching tools. The hitch can handle big equipment, which is great for large farms. The D21 Series II also has a separate PTO that spins at 1000 rpm. This lets farmers use many different kinds of tools. The tractor is pretty heavy, weighing 9,502 pounds. It's big too, measuring over 13 feet long and almost 9 feet tall. Despite its size, it has an open operator station, so farmers can easily see around them while working.
Full specifications
Every recorded spec
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | D21 Series II |
| Category | Row Crop tractor |
| Type | 4x2 2WD |
| Years built | 1965–1969 |
| Operating weight | 9,502lb |
Engine
| Make | Allis Chalmers |
|---|---|
| Model | 3500 |
| Power | 121hp |
| Cylinders | 6 |
| Displacement | 426ci |
| Bore | 4.25in |
| Stroke | 5in |
Transmission
| Type | Sliding gear with dry disc clutch |
|---|---|
| Forward gears | 8 |
| Reverse gears | 2 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Power |
| Brakes | Band actuated disc |
| Cab | Open |
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 1,000rpm |
Dimensions
| Length | 160.2in |
|---|---|
| Width | 91.3in |
| Height | 106.3in |
| Operating weight | 9,502lb |
Capacities
| Cooling system | 7.75gal |
|---|
Head to head
D21 Series II vs. Row Crop median
How the Allis Chalmers D21 Series II compares to other Row Crop tractors
| Spec | This model | Row Crop median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 121 hp | 138 hp | -12% | 40th |
| Engine Displacement | 426 ci | 391 ci | +9% | 72nd |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 8 | 16 | -50% | 16th |
| Operating Weight | 9,502 lb | 12,307 lb | -23% | 28th |
| Length | 160 in | 180 in | -11% | 25th |
| Width | 91.3 in | 91.2 in | 0% | 50th |
| Height | 106 in | 114 in | -6% | 27th |
Medians and percentiles are computed from the row crop tractors in our database with a recorded value for each spec (sample sizes 806–1,417 models).
Compare to tractors with similar specs
Commonly compared Allis Chalmers tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers 8010 | 119 hp | 12,630 lb | 1982–1985 | Compare → |
| Allis Chalmers 7020 | 123.79 hp | 11,770 lb | 1977–1981 | Compare → |
| Allis Chalmers 7030 | 131.09 hp | 12,430 lb | 1973–1974 | Compare → |
| Allis Chalmers 210 | 136 hp | 12,425 lb | 1970–1973 | Compare → |
| Allis Chalmers 7010 | 105.77 hp | 11,260 lb | 1980–1981 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO RT115 | 121.4 hp | 12,900 lb | — | Compare → |
| Agrinar T-120 | 119.3 hp | 4,580 lb | — | Compare → |
| CaseIH 1255 XL | 125 hp | — | — | Compare → |
| AGCO RT110A | 116.9 hp | 12,200 lb | — | Compare → |
| Belarus 1025 MIG | 115 hp | 9,469 lb | — | Compare → |
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Gallery
Allis Chalmers D21 Series II photos
FAQ
Common questions
What years was the Allis Chalmers D21 Series II manufactured?
Production of the Allis Chalmers D21 Series II ran from 1965 through 1969.
What type of transmission does the Allis Chalmers D21 Series II have?
The Allis Chalmers D21 Series II uses a Sliding gear with dry disc clutch transmission offering 8 forward gears.
What three-point hitch category does the Allis Chalmers D21 Series II use?
The Allis Chalmers D21 Series II has a Category III/II three-point hitch.
How powerful is the Allis Chalmers D21 Series II?
The Allis Chalmers D21 Series II has an engine power output of 121 hp. It is powered by a 6-cylinder engine displacing 426 ci.
What is the working weight of the Allis Chalmers D21 Series II?
The operating weight of the Allis Chalmers D21 Series II is approximately 9,502 lb.
What routine service does the Allis Chalmers D21 Series II need?
Regular maintenance for the Allis Chalmers D21 Series II includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.