John Deere 3120

Last Updated: September 2024

Overview

The John Deere 3120 is a utility tractor built for versatility and efficiency. It features a 4x4 MFWD chassis with power steering, making it easy to handle in various conditions. The tractor is powered by a Yanmar 3TNV84 diesel engine with three cylinders and natural induction. This engine produces 29.5 hp at 2600 rpm, which is average for its class. The tractor uses a hydrostatic transmission with infinite forward and reverse gears in three ranges, giving operators smooth control over speed and direction.

This compact tractor measures 120.1 inches long, 52.4 inches wide, and 92.9 inches tall. It weighs 2,998 lb, which is on the lighter side for utility tractors. The John Deere 3120 comes with an open operator station and a two-post ROPS for safety. It has a Category I hitch and an independent PTO with two speeds: 2100 rpm at the middle PTO and 540 rpm at the rear PTO. The tractor uses an open center hydraulic system and is equipped with wet disc brakes for reliable stopping power. Built in Augusta, Georgia, USA, this John Deere model combines American engineering with practical features for everyday farm tasks.
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Key Specifications

Category: Utility

Power Output: 30 hp (22.0 kW)

Transmission: Hydrostatic

Drive Type: 4WD

Operating Weight: 2998 lb (1360 kg)

Fuel Type: Diesel

John Deere 3120 vs. Similar Tractors

Power Output

The Power Output for the John Deere 3120 is Below Average. It is greater than 23% of similar Utility tractors in our database.

Horsepower distribution of Utility tractors

(across 4.7K+ tractors in our database)

Operating Weight

The Operating Weight for the John Deere 3120 is Below Average. It is greater than 25% of similar Utility tractors in our database.

Operating weight distribution of Utility tractors

(across 4.4K+ tractors in our database)

Engine Displacement

The Engine Displacement for the John Deere 3120 is Below Average. It is greater than 22% of similar Utility tractors in our database.

Engine displacement distribution of Utility tractors

(across 1K+ tractors in our database)

Engine Rated RPM

The Engine Rated RPM for the John Deere 3120 is Above Average. It is greater than 77% of similar Utility tractors in our database.

Engine rated RPM distribution of Utility tractors

(across 1K+ tractors in our database)

Technical Specifications

Engine

Manufacturer
Yanmar
Model
3TNV84
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Fuel Type
Diesel
Induction Type
Natural
Cylinders
3
Displacement
92 ci (1.5 L)
Bore
3.31 in (84.1 mm)
Stroke
3.54 in (89.9 mm)
Rated RPM
2600
Power Output
30 hp (22.0 kW)

Transmission

Type
Hydrostatic
Forward Gears
Infinite (3-range)
Reverse Gears
Infinite (3-range)
Total Gears
Infinite (3-range)

Drivetrain

Chassis
4x4 MFWD 4WD
Drive Type
4WD
Steering Type
Power
Brake Type
Wet disc