John Deere 3420 Row-Crop Tractors Specifications

Engine

The engine is a John Deere diesel 6-cylinder liquid-cooled inline with a displacement of 302.7ci / 5.0L. It has a bore/stroke of 4.016x4.331inches / 102x 110mm and a compression ratio of 16.7:1. The engine is rated at 77hp / 57.4kW with a torque of 221lb-ft / 299.7Nm at 1250rpm. It has a dry air cleaner and a starter voltage of 12.

Transmission

The transmission is a Syncro-Range with 8 forward and 2 reverse gears. The engine is rated at 77hp / 57.4kW.

Brakes

The brakes are hydraulic wet disc. The John Deere diesel 6-cylinder liquid-cooled inline engine powers the brakes. The engine has a displacement of 302.7ci / 5.0L and a bore/stroke of 4.016x4.331inches / 102x 110mm. It has a compression ratio of 16.7:1 and is rated at 77hp / 57.4kW with a torque of 221lb-ft / 299.7Nm at 1250rpm. The air cleaner is dry.

Steering

The steering is power-assisted and is described as John Deere 5.0L 6-cylinder diesel. The fuel tank has a capacity of 34.1gal / 129.1L. The engine is rated at 77hp / 57.4kW with a torque of 221lb-ft / 299.7Nm at 1250rpm. It has a displacement of 302.7ci / 5.0L and a bore/stroke of 4.016x4.331inches / 102x 110mm. The air cleaner is dry.

Common Problems

Users have reported issues with the chassis, which is a 4x2 2WD. The final drives have also been problematic, as they are planetary. Some users have reported issues with the power steering. The hydraulic wet disc brakes have also been known to cause problems. The open operator station cab has been reported to be uncomfortable for some users. The 8-speed transmission has also been known to cause issues.

What Users Like

Users appreciate the 7.50x18 front and 13.6x38 / 15.5x38 / 23.1x26 rear agricultural tires. They provide excellent traction and stability on a variety of terrains. The John Deere diesel 6-cylinder liquid-cooled inline engine is also a popular feature, as it provides plenty of power and torque. Users also appreciate the power-assisted steering, which makes maneuvering the tractor much easier. The Syncro-Range transmission with 8 forward and 2 reverse gears is also a popular feature, as it provides a good range of speeds for different tasks. The 34.1gal / 129.1L fuel tank is also appreciated, as it allows for longer periods of use without needing to refuel.

Techincal Specifications

Power
Engine	77hp / 57.4kW
Engine Detail
Description	John Deere diesel 6-cylinder liquid-cooled inline
Displacement	302.7ci / 5.0L
Bore/stroke	4.016x4.331inches / 102x 110mm
Power	77hp / 57.4kW
Air Cleaner	dry
Compression	16.7:1
Rated Rpm	2500
Torque	221lb-ft / 299.7Nm
Torque Rpm	1250
Starter Volts	12
Engine
Description	John Deere 5.0L 6-cyl diesel
Fuel Tank	34.1gal / 129.1L
Transmission
Transmission	Syncro-Range
Gears	8 forward and 2 reverse
Mechanical
Chassis	4x2 2WD
Final Drives	planetary
Steering	power
Brakes	hydraulic wet disc
Cab	Open operator station
Transmission	8-speed
Tires
Ag Front	7.50x18
Ag Rear	13.6x38 / 15.5x38 / 23.1x26
Dimensions
Wheelbase	100.4inches / 255cm
Length	161inches / 408cm
Height (hood)	67.3inches / 170cm
Height (exhaust)	88.2inches / 224cm
Shiping Weight	7668lbs / 3478kg
Ground Clearance	13.4inches / 34cm
Dimensions And Tires
Wheelbase	100.4inches / 255cm
Weight	7668lbs / 3478kg
Front Tire	6.00x16
Rear Tire	18.4x34
Serial Numbers
Location	Serial number plate below the steering column
Hydraulics
Type	closed center
Tractor Hitch
Rear Type	II
Electrical
Charging System	alternator
Charging Amps	28
Batteries	2
Battery Volts	6
Speeds
Description	With 18.4x34 rear tires
Power Take Off Pto
Rear Pto	independent
Rear Rpm	540