Allis Chalmers D21 Series I

Last Updated: September 2024

Overview

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.
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Key Specifications

Category: Row Crop

Power Output: 103 hp (76.8 kW)

Transmission: Sliding gear with dry disc clutch

Drive Type: 2WD

Operating Weight: 9500 lb (4309 kg)

Fuel Type: Diesel

Allis Chalmers D21 Series I vs. Similar Tractors

Power Output

The Power Output for the Allis Chalmers D21 Series I is Below Average. It is greater than 26% of similar Row Crop tractors in our database.

Horsepower distribution of Row Crop tractors

(across 1.1K+ tractors in our database)

Operating Weight

The Operating Weight for the Allis Chalmers D21 Series I is Below Average. It is greater than 27% of similar Row Crop tractors in our database.

Operating weight distribution of Row Crop tractors

(across 1.3K+ tractors in our database)

Engine Displacement

The Engine Displacement for the Allis Chalmers D21 Series I is Above Average. It is greater than 72% of similar Row Crop tractors in our database.

Engine displacement distribution of Row Crop tractors

(across 1K+ tractors in our database)

Engine Rated RPM

The Engine Rated RPM for the Allis Chalmers D21 Series I is Average. It is greater than 58% of similar Row Crop tractors in our database.

Engine rated RPM distribution of Row Crop tractors

(across 1K+ tractors in our database)

Technical Specifications

Engine

Manufacturer
Allis Chalmers
Model
3400
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Fuel Type
Diesel
Induction Type
Naturally aspirated
Cylinders
6
Displacement
426 ci (7.0 L)
Bore
4.25 in (107.9 mm)
Stroke
5.00 in (127.0 mm)
Rated RPM
2200
Power Output
103 hp (76.8 kW)

Transmission

Type
Sliding gear with dry disc clutch
Forward Gears
8
Reverse Gears
2

Drivetrain

Chassis
4x2 2WD
Drive Type
2WD
Steering Type
Power
Brake Type
Band actuated disc