Brand siblingRow CropPerformance profile
Allis Chalmers D21 Series I
The Allis Chalmers D21 Series I is a powerful row crop tractor made from 1963 to 1965. It has a 2WD design with power steering, making it easy to handle in the fields. The tractor is equipped with a strong 6-cylinder diesel engine that produces 103 hp at 2200 rpm. This engine has an above-average displacement of 426 ci, giving it plenty of power for tough farming jobs. The D21 Series I comes with a sliding gear transmission that offers 8 forward gears and 2 reverse gears. It has a three-point hitch at the rear, which can handle category III or II implements. The tractor also features an independent PTO that runs at 1000 rpm, perfect for powering various farm tools. With its open operator station and electric starter, this tractor is built for comfort and ease of use. The D21 Series I is a big machine, measuring 160.6 inches long, 91.6 inches wide, and 106.6 inches tall. It weighs 9500 lb, which is about average for tractors of its class, providing good stability during operation.
ManufacturerAllis ChalmersPower103 hpEngine6-cylTransSliding gear with dry disc clutch
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Quick specs
- Category
- Row Crop
- Engine Power Output
- 103hp
- Operating Weight
- 9,500 lb
- Transmission
- Sliding gear with dry disc clutch
At a glance
How the D21 Series I compares
vs. Row Crop medianDistribution
Engine Power (hp)
Across all Row Crop tractors
103 hp · 27th
This model
12
Median 138 hp
283
This modelRow Crop tractorsMediann = 1,206
The D21 Series I ranks at the 27th percentile for engine power among recorded row crop tractors.
Overview
About the Allis Chalmers D21 Series I
The Allis Chalmers D21 Series I is a powerful row crop tractor made from 1963 to 1965. It has a 2WD design with power steering, making it easy to handle in the fields. The tractor is equipped with a strong 6-cylinder diesel engine that produces 103 hp at 2200 rpm. This engine has an above-average displacement of 426 ci, giving it plenty of power for tough farming jobs. The D21 Series I comes with a sliding gear transmission that offers 8 forward gears and 2 reverse gears. It has a three-point hitch at the rear, which can handle category III or II implements. The tractor also features an independent PTO that runs at 1000 rpm, perfect for powering various farm tools. With its open operator station and electric starter, this tractor is built for comfort and ease of use. The D21 Series I is a big machine, measuring 160.6 inches long, 91.6 inches wide, and 106.6 inches tall. It weighs 9500 lb, which is about average for tractors of its class, providing good stability during operation.
Full specifications
Every recorded spec
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | D21 Series I |
| Category | Row Crop tractor |
| Type | 4x2 2WD |
| Years built | 1963–1965 |
| Operating weight | 9,500lb |
Engine
| Make | Allis Chalmers |
|---|---|
| Model | 3400 |
| Power | 103hp |
| 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 | 160.6in |
|---|---|
| Width | 91.6in |
| Height | 106.6in |
| Operating weight | 9,500lb |
Capacities
| Cooling system | 5.25gal |
|---|
Head to head
D21 Series I vs. Row Crop median
How the Allis Chalmers D21 Series I compares to other Row Crop tractors
| Spec | This model | Row Crop median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 103 hp | 138 hp | -25% | 27th |
| Engine Displacement | 426 ci | 391 ci | +9% | 72nd |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 8 | 16 | -50% | 16th |
| Operating Weight | 9,500 lb | 12,307 lb | -23% | 28th |
| Length | 161 in | 180 in | -11% | 25th |
| Width | 91.6 in | 91.2 in | 0% | 51st |
| Height | 107 in | 114 in | -6% | 29th |
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 7010 | 105.77 hp | 11,260 lb | 1980–1981 | Compare → |
| Allis Chalmers 6080 | 93 hp | 6,500 lb | 1980–1985 | Compare → |
| Allis Chalmers 8010 | 119 hp | 12,630 lb | 1982–1985 | Compare → |
| Allis Chalmers D21 Series II | 121 hp | 9,502 lb | 1965–1969 | Compare → |
| Allis Chalmers 7020 | 123.79 hp | 11,770 lb | 1977–1981 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Belarus 1052 | 105 hp | 7,209 lb | — | Compare → |
| Belarus 5590 | 105 hp | 9,471 lb | — | Compare → |
| AGCO LT75A | 100 hp | 8,820 lb | — | Compare → |
| Agco RT100a | 100 hp | 11,051.8 lb | — | Compare → |
| Belarus 1005 | 100 hp | 8,874 lb | — | Compare → |
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FAQ
Common questions
What years was the Allis Chalmers D21 Series I manufactured?
Production of the Allis Chalmers D21 Series I ran from 1963 through 1965.
What hitch category is the Allis Chalmers D21 Series I?
The Allis Chalmers D21 Series I uses a Category III/II hitch.
How powerful is the Allis Chalmers D21 Series I?
The Allis Chalmers D21 Series I has an engine power output of 103 hp. It is powered by a 6-cylinder engine displacing 426 ci.
What is the working weight of the Allis Chalmers D21 Series I?
The operating weight of the Allis Chalmers D21 Series I is approximately 9,500 lb.
What type of transmission does the Allis Chalmers D21 Series I have?
The Allis Chalmers D21 Series I uses a Sliding gear with dry disc clutch transmission offering 8 forward gears.
What routine service does the Allis Chalmers D21 Series I need?
Regular maintenance for the Allis Chalmers D21 Series I 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.