John Deere A (1939-1947)

Last Updated: June 2024

Overview

The John Deere A is a 2WD row-crop tractor produced during 1939-1947 in Waterloo, Iowa, USA, as part of the Two-Cylinder Letter Series. The tractor features a 4x2 chassis and manual steering, and comes with a couple of engine options: a 5.1 L or 5.3 L two-cylinder all-fuel engine, both liquid-cooled and naturally aspirated, producing 18 HP and 34 HP respectively at a rated 975 rpm. Transmission types include an unsynchronized gear with options of either 4 or 6 forward gears and 1 reverse gear, along with manual or optional electric starter choices. Operating weight is recorded at 4597 lbs, with a length of 133.9 inches, a width of 86.2 inches, and a height of 63.8 inches. Specific tire sizes and types are partially unknown, but include both steel and Ag variants. Notably, this model includes a 540 rpm rear PTO and an open operator station, providing a practical workhorse for its time.
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Key Specifications

Category: Row Crop

Power Output: 18.0 / 34.0

Transmission: Unsynchronized gear

Drive Type: 2WD

Operating Weight: 4,597

Fuel Type: All-fuel / Gasoline

John Deere A (1939-1947) vs. Similar Tractors

Operating Weight
Poor
Greater than 1% of similar tractors.

Technical Specifications

Engine

Manufacturer
John Deere
Model
John Deere
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
All-fuel / Gasoline
Induction Type
Naturally aspirated
Cylinders
2
Displacement (ci)
309.0 / 321.0
Bore (in)
5.51
Stroke (in)
6.5 / 6.73
Rated RPM
975
Power Output (hp)
18.0 / 34.0

Transmission

Type
Unsynchronized gear
Forward Gears
6
Reverse Gears
1
Total Gears
-

Dimensions

Length (in)
133.9
Width (in)
86.2
Height (in)
63.8
Operating Weight (lb)
4,597

Power Take-Off (PTO)

PTO Type
Transmission PTO
PTO Speed 1 (rpm)
540
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2
Drive Type
2WD
Steering Type
Manual
Coolant Capacity (qts)
38
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Steel / Ag
Manufacture - End Year
1947
Hitch Type
-
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
Open
Starter Type
Manual / Electric (option)
Brake Type
Differential mechanical expanding shoe
Hydraulic System Type
-