Introduction
John Deere 3420 Row-Crop Tractor
The John Deere 3420 is a row-crop tractor produced between 1970 and 1975 at the John Deere manufacturing facility in Rosario, Argentina. It belongs to the 2420-4420 series and was designed for general agricultural applications.
Engine and Performance
The tractor is powered by a 5.0 L (302.7 ci) liquid-cooled, inline 6-cylinder diesel engine. It generates 77 hp (57.4 kW) at a rated speed of 2500 RPM. The engine produces a torque of 221 lb-ft (299.7 Nm) at 1250 RPM. It features a compression ratio of 16.7:1 and is equipped with a dry-type air cleaner.
Transmission and Drivetrain
The 3420 utilizes a Syncro-Range transmission providing 8 forward gears and 2 reverse gears. It is configured as a two-wheel drive machine with power steering to assist the operator. Power is delivered to the ground through planetary final drives, and stopping power is provided by hydraulic wet disc brakes.
Hydraulics and PTO
The hydraulic system features a closed-center design. For implement operation, the tractor is equipped with an independent rear Power Take-Off (PTO) system operating at 540 RPM. The rear hitch is a category II configuration, allowing for the attachment of various agricultural implements.
Dimensions and Operator Station
The tractor features an open operator station. It measures 161 inches (408 cm) in length with a wheelbase of 100.4 inches (255 cm). The height to the top of the exhaust is 88.2 inches (224 cm), and it provides a ground clearance of 13.4 inches (34 cm). The base shipping weight of the unit is 7668 lbs (3478 kg).
Conclusion
The John Deere 3420 is a robust, mechanically straightforward row-crop tractor suited for standard farming tasks where 2WD performance and a reliable 6-cylinder engine are required.
Production Information of John Deere, 3420
- Row-Crop tractor
- Built in Rosario, Argentina
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 3420
| Wheelbase | 100.4 inches [255 cm] |
|---|---|
| Shipping weight | 7668 lbs [3478 kg] |
| Height (exhaust) | 88.2 inches [224 cm] |
| Length | 161 inches [408 cm] |
| Ground clearance | 13.4 inches [34 cm] |
| Height (hood) | 67.3 inches [170 cm] |
| Ag front | 6.00x16 |
|---|---|
| Ag front(optional) | 15.5x38 |
| Ag rear | 13.6x38 |
| Ag rear | 18.4x34 |
| Ag rear(optional) | 23.1x26 |
| Ag front | 7.50x18 |
Engine Specifications of John Deere, 3420
- John Deere
- Liquid-cooled inline
- Diesel
- 6-cylinder
| Torque | 221 lb-ft [299.7 Nm] |
|---|---|
| Displacement | 302.7 ci [5.0 L] |
| Air cleaner | Dry |
| Bore/Stroke | 4.016x4.331 inches [102 x 110 mm] |
| Starter volts | 12 |
| Torque RPM | 1250 |
| Rated RPM | 2500 |
| Compression | 16.7:1 |
| Power | 77 hp [57.4 kW] |
Transmission Information of John Deere, 3420
Transmission variants 1
| Transmission | Syncro-Range |
|---|---|
| Gears | 8 forward and 2 reverse |
Mechanical Specs of John Deere, 3420
- Two-wheel drive
- Open operator station.
- Hydraulic wet disc brakes
- Power steering
| Final drives | Planetary |
|---|
Power Information of John Deere, 3420
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 |
Hydraulics Specifications of John Deere, 3420
| Type | Closed center |
|---|
Three-Point Hitch of John Deere, 3420
| Rear Type | II |
|---|
Electrical System of John Deere, 3420
| Charging system | Alternator |
|---|---|
| Battery volts | 6 |
| Charging amps | 28 |
| Batteries | 2 |
Where it sits
With 77 HP, the John Deere 3420 sits between 2420 (66 HP) and 4420 (102 HP) in John Deere's range. Its power puts it in the 56th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the John Deere 3420 have?
The John Deere 3420 delivers 77 HP.
What years was the John Deere 3420 produced?
The John Deere 3420 was produced in 1970-1975.
What engine does the John Deere 3420 have?
The John Deere 3420 is powered by a Diesel, 6-cylinder engine.
What transmission does the John Deere 3420 use?
The John Deere 3420 uses a Syncro-Range transmission.
How much does the John Deere 3420 weigh?
The John Deere 3420 weighs 7668 lbs [3478 kg].
Is the John Deere 3420 4WD?
The John Deere 3420 is available in 2WD.