Compare/John Deere 3120 vs John Deere 790

John Deere 3120 vs John Deere 790

Verdict: John Deere 3120 vs John Deere 790

The John Deere 3120 and the John Deere 790 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 30 hp. John Deere 3120 is the lighter machine (1,360 kg vs 1,930 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 3120 is the newer design (2005 vs 2000). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

30 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

YanmarReference

With 11.2-24 rear tires.Reference

With 11.2-24 rear tiresReference

Steering

powerReference

—

Distributor

—

John DeereReference

2WD Steering

—

manualReference

4WD Steering

—

hydrostatic powerReference

Engine

22.0 kWReference

—

Displacement

1.5 LReference

Bore/Stroke

84 x 90 mmReference

Emissions

Tier IIReference

—

Power

22.0 kWReference

—

Fuel system

direct injectionReference

—

Compression

18.5:1Reference

18:1Reference

Rated RPM

2600Reference

Torque

90.4 NmReference

—

Torque RPM

1560Reference

—

Starter volts

12Reference

Oil capacity

4.8 LReference

15.1 LReference

Coolant capacity

5.3 LReference

—

Engine (gross)

—

22.4 kWReference

Power (gross)

—

22.4 kWReference

Air cleaner

—

dryReference

Fuel Type

—

DieselReference

No of Cylinders

—

3 cylinderReference

Rated engine speed

—

2,600 RPMReference

Bore and stroke

—

3.23x3.31 inchesReference

Compression ratio

—

18.5:1Reference

Cooling system

—

liquid-cooledReference

Transmission

Sauer-Danfoss eHydroReference

—

Gears

infinite forward and reverse (3-range)Reference

8 forward and 2 reverseReference

Oil type

—

Low Viscosity HY-GardReference

Transmission Type

—

PowershiftReference

forward and reverse options

—

unsynchronized : 8F and 2RReference

Capacities

Fuel

51.1 LReference

23.8 LReference

Front diff.

—

2.2 LReference

Fuel tank

—

23.8 LReference

PTO & Hydraulics

Hydraulic system

25.7 LReference

15.1 LReference

Type

hydrostaticReference

unsynchronizedReference

Capacity

25.7 LReference

15.1 LReference

Valves

5Reference

—

Pump flow

32.6 lpmReference

20.4 lpmReference

Total flow

52.6 lpmReference

—

Rear Type

IReference

Rear lift (at ends)

1147 kgReference

—

Rear PTO

independentReference

live (two-stage clutch)Reference

Rear PTO Type

540Reference

Mid PTO

optionalReference

AvailableReference

Mid PTO Type

2100Reference

PTO (claimed)

—

19.4 kWReference

Pressure

—

141.3 barReference

Steering flow

—

15.9 lpmReference

Steering press.

—

141.3 barReference

Rear lift (at 24"/610mm)

—

369 kgReference

Dimensions

Wheelbase

172 cmReference

153 cmReference

Weight

474 kgReference

356 kgReference

Front tire

7-14Reference

6.00-12Reference

Rear tire

11.2-24Reference

12.4-16Reference

Ag front

7-14Reference

6.00-12 (early)Reference

Ag rear

11.2-24Reference

Lawn/turf front

25x10.5LL-15Reference

25x8.50-14Reference

Lawn/turf rear

41x18LL-16.1Reference

13.6-16Reference

Industrial front

27x8.5-15Reference

25x8.50-14Reference

Industrial rear

43x16-20Reference

15.0-19.6Reference

Length

305 cmReference

281 cmReference

Width

133 cmReference

—

Height (hood)

144 cmReference

130 cmReference

Height (ROPS)

236 cmReference

208 cmReference

Clearance (rear axle)

30 cmReference

—

Rear tread

103/115/124/134/143 cmReference

—

2WD Ag front

—

5.00-15Reference

4WD Ag front

—

7.00-14Reference

2WD Weight

—

875 kgReference

4WD Weight

—

954 kgReference

John Deere 3120 attachments

3120 Serial Numbers

2005

110001Reference

LV0790G890001Reference

2006

210001Reference

LV0790G990001Reference

2007

310001Reference

LV0790S190001Reference

2008

410001Reference

—

Electrical

Ground

negativeReference

Charging amps

40Reference

20Reference

Battery CCA

500Reference

Battery volts

12Reference

Charging system

—

alternatorReference

Battery Group

—

45Reference

Total cold cranking amps

—

500 CCAReference

Attachment overview

60" Mower deck

Cutting width

152 cmReference

Overall width

—

184 cmReference

Cut height

—

2 to 22 cmReference

John Deere 47 Backhoe

Backhoe type

John Deere 47 BackhoeReference

John Deere 7 BackhoeReference

2-Foot flat digging depth

228 cmReference

Reach from pivot

289 cmReference

Loading height

177 cmReference

Bucket Rotation

180°Reference

—

Swing Arc

180°Reference

—

Bucket force

1288 kgReference

882 kgReference

Dipperstick force

909 kgReference

496 kgReference

Speeds

John Deere 790 attachments

790 Serial Number Location

790 Serial Numbers

1999

—

LV0790G190001Reference

2000

—

LV0790G390001Reference

2001

—

LV0790G490001Reference

2002

—

LV0790G570001Reference

2003

—

LV0790G592446Reference

2004

—

LV0790G790001Reference

John Deere 7 Backhoe

General

Make & Model

—

YanmarReference

Rollover protective structure

—

Two-post ROPSReference

Country of manufacturer

—

JapanReference

Power

Rated Power

—

30 hpReference

PTO

Rear PTO Power

—

AvailableReference

Rear PTO RPM

—

540 RPMReference

Mid PTO RPM

—

2,100 RPMReference

Steering & brakes

Brakes

—

independent dry shoeReference

Steering type

—

manual | hydrostatic powerReference

Hydraulics

Hydraulics Type

—

open centerReference

Maximum operating pressure

—

2,050 psiReference

Steering & Implements flow

—

4.2 gpm (5.4 gpm)Reference

Rear Hitch category (SAE designation)

—

Category IReference

Dimensions & weight

Overall Height

—

130 cmReference

Height Over ROPS

—

208.3 cmReference

Overall Length

—

281.9 cmReference

Wheels & tyres

Rear Wheel Type

—

12.4-16Reference

Rear wheel tread range

—

12.4-16 (early), 11.2-24 inchReference

Front Wheel Type

—

7.00-14Reference

Front Wheel tread range

—

6.00-12Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.