Introduction
John Deere 620 Row-Crop Tractor
The John Deere 620 is a row-crop tractor produced in Waterloo, Iowa, between 1956 and 1958. Part of the John Deere 600 series, this two-wheel-drive machine was designed for mid-range agricultural operations and remains a notable model from the post-war era of American tractor manufacturing.
Engine and Performance
The tractor is powered by a liquid-cooled, two-cylinder, four-valve engine running on LP gas. With a displacement of 302.9 cubic inches (5.0 L) and a compression ratio of 8.1:1, the engine delivers approximately 53 horsepower at a rated speed of 1125 RPM. It features an oil bath air cleaner and requires 8 quarts (7.6 L) of oil for lubrication.
Transmission and Drivetrain
The drivetrain consists of an unsynchronized gear transmission providing 6 forward speeds and 1 reverse gear. Power is transferred through a mechanical dry disc clutch. Steering is facilitated by a power-assist system, while the braking system utilizes differential mechanical contracting band brakes to ensure maneuverability and control.
Hydraulics and Hitch
The hydraulic system operates at a pressure of 1200 psi (82.7 bar) with a pump flow capacity of 8.9 gpm (33.7 lpm). It is configured with 1 or 2 valves to manage auxiliary implements. The tractor is equipped with a Category II rear hitch and a standard 540 RPM rear power take-off (PTO).
Dimensions and Chassis
The John Deere 620 features a 90-inch (228 cm) wheelbase and is available in standard or high-crop configurations. The total length is 135.25 inches (343 cm) for the standard model, with a height of 88.125 inches (223 cm). The rear tread width is adjustable from 58 to 88 inches, or up to 104 inches on models equipped with long axles.
Conclusion
With 20,848 units produced, the John Deere 620 served as a reliable workhorse for mid-century farms. Its combination of LP gas power, power-assist steering, and standard hydraulic capabilities made it a versatile choice for row-crop management and general field tasks of its era.
Production Information of John Deere, 620
- Original price was $3,000 in 1956
- Row-Crop tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|---|
| Total built | 20,848 |
Dimension and Tires Information of John Deere, 620
| High-crop Height | 96.75 inches [245 cm] |
|---|---|
| Wheelbase | 90 inches [228 cm] |
| High-crop Width | 74 inches [187 cm] |
| Width | 86.625 inches [220 cm] |
| Length | 135.25 inches [343 cm] |
| Rear tread | 58 to 88 inches [147 to 223 cm] |
| Height | 88.125 inches [223 cm] |
| High-crop Length | 147.1875 inches [373 cm] |
| Rear tread | 58 to 104 inches [147 to 264 cm (long axle)] |
| Ag front | 6.00-16 |
|---|---|
| Ag front(optional) | 13-30 (standard) |
| Ag front(optional) | 7.50-20 (high-crop) |
| Ag rear | 12.4-38 |
Engine Specifications of John Deere, 620
- John Deere
- Liquid-cooled
- LP gas
- 2-cylinder 4-valve
| Starter volts | 12 |
|---|---|
| Displacement | 302.9 ci [5.0 L] |
| Compression | 8.1:1 |
| Bore/Stroke | 5.50x6.375 inches [140 x 162 mm] |
| Oil capacity | 8 qts [7.6 L] |
| Firing order | 1-2 |
| Rated RPM | 1125 |
| Air cleaner | Oil bath |
Transmission Information of John Deere, 620
Transmission variants 1
| Manufacturer | John Deere |
|---|---|
| Oil capacity | 24 qts [22.7 L] |
| Clutch | Mechanical dry disc |
| Type | Unsynchronized gear |
| Gears | 6 forward and 1 reverse |
Mechanical Specs of John Deere, 620
- Two-wheel drive
- Open operator station.
- Differential mechanical contracting band brakes
| Steering | Power assist |
|---|
Power Information of John Deere, 620
| Rear PTO Type | 540 |
|---|
Hydraulics Specifications of John Deere, 620
| Pressure | 1200 psi [82.7 bar] |
|---|---|
| Valves | 1 or 2 |
| Pump flow | 8.9 gpm [33.7 lpm] |
Three-Point Hitch of John Deere, 620
| Rear Type | II |
|---|
Electrical System of John Deere, 620
| Ground | Positive |
|---|---|
| Batteries | 2 |
| Battery volts | 6 |
Where it sits
With 53 hp[P] HP, the John Deere 620 sits between 520 (41 HP) and 720 (65 HP) in John Deere's range. Its power puts it in the 78th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the John Deere 620 have?
The John Deere 620 delivers 53 hp[P] HP.
What years was the John Deere 620 produced?
The John Deere 620 was produced in 1956-1958.
What engine does the John Deere 620 have?
The John Deere 620 is powered by a LP gas, 2-cylinder 4-valve engine.
What transmission does the John Deere 620 use?
The John Deere 620 uses a Unsynchronized gear transmission.
Is the John Deere 620 4WD?
The John Deere 620 is available in 2WD.