Compare/John Deere 4840 vs John Deere 7930

John Deere 4840 vs John Deere 7930

Verdict: John Deere 4840 vs John Deere 7930

The John Deere 4840 and the John Deere 7930 are both tractors — here is how they stack up on the figures that matter. John Deere 7930 leads on rated power with 183 hp against 181 hp. John Deere 7930 is the lighter machine (8,042 kg vs 14,900 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 7930 is the newer design (2007 vs 1978). In short: choose the John Deere 7930 for outright pulling power, or the John Deere 4840 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

181 hp

183 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Clutchless shift-on-the-move power shift between all eight forward and four reverse gears. Inching pedal provided for hooking up implements and other precision work.Reference

Four push-button power shift gears (1-4) in five synchronized ranges (A-D) with left-hand power shuttle. Available in 40 kph and 50 kph versions.Reference

Differential lock

pedal-actuated hydraulicReference

—

Engine

Drawbar (claimed)

117.1 kWReference

—

Drawbar (tested)

112.8 kWReference

123.4 kWReference

Displacement

7.6 LReference

6.8 LReference

Bore/Stroke

116 x 121 mmReference

106 x 127 mmReference

Air cleaner

dual paper elementsReference

Pre-heating

ether injectionReference

—

Compression

15.5:1Reference

17:1Reference

Rated RPM

2200Reference

2100Reference

Idle RPM

800-2400Reference

—

Operating RPM

1500-2200Reference

—

Firing order

1-5-3-6-2-4Reference

Starter volts

12Reference

Coolant capacity

37.9 LReference

—

Power at rated engine speed

134.7 kWReference

136.4 kWReference

Max power

112.8 kWReference

118.6 kWReference

Fuel Type

DieselReference

No of Cylinders

6-cylinderReference

6 cylinderReference

Rated engine speed

2,200 | 1,500-2,200 RPMReference

RPMReference

Bore and stroke

4.5,625x4.75 inchesReference

4.19x5.00 inchesReference

Compression ratio

15.5:1Reference

—

Cooling system

liquid-cooled | 40 qtsReference

viscous fanReference

Engine

—

164.1 kWReference

Power

—

164.1 kWReference

Fuel system

—

high-pressure common railReference

Torque

—

874.6 NmReference

Torque RPM

—

1602Reference

Engine torque at rated speed

—

292.6 kgReference

Transmission

John Deere PowerShiftReference

Infinitely Variable Transmission (IVT)Reference

Gears

8 forward and 4 reverseReference

infinite forward and reverseReference

Oil capacity

75.7 LReference

26.0 LReference

forward and reverse options

8 forward and 4 reverseReference

—

Transmission Type

—

Power QuadReference

Wheel Drive

—

4WDReference

PTO & Hydraulics

PTO (claimed)

134.2 kWReference

PTO (tested)

134.7 kWReference

151.7 kWReference

Hydraulic system

62.5 LReference

107.9 LReference

Type

full power shiftReference

closed center load-sensingReference

Capacity

62.5 LReference

107.9 LReference

Valves

2 or 3Reference

2 to 7Reference

Pump flow

87.1 lpmReference

—

Rear Type

III/IIINReference

IIIReference

Rear lift

3762 kgReference

6350 kgReference

Rear PTO

independentReference

Rear PTO Type

1000 (1.75)Reference

540/1000 (1.375)Reference

Power at rated PTO speed

135.4 kWReference

148.2 kWReference

Pressure

—

200.0 barReference

SCV flow

—

113.6 lpmReference

Total flow

—

170.3 lpmReference

Clutch

—

hydraulic wet discReference

Engine RPM

—

1000@1950Reference

Capacities

Fuel

389.9 LReference

355.8 LReference

Fuel tank

—

389.9 LReference

Crankcase oil volume

—

27.5 qtsReference

Dimensions

Wheelbase

300 cmReference

286 cmReference

Weight

14900 to 18000 poundsReference

8042 kgReference

Front tire

11.00-16Reference

420/90R30Reference

Rear tire

18.4-38Reference

480/80R46Reference

Ag front

9.50-20Reference

—

Ag rear

18.4-42Reference

—

Length

449 cmReference

571 cmReference

Width

299 cmReference

243 cmReference

Height (cab)

297 cmReference

310 cmReference

Clearance (front axle)

66 cmReference

69 cmReference

Clearance (rear axle)

71 cmReference

82 cmReference

Clearance (drawbar)

37 cmReference

46 cmReference

Rack-and-pinion rear axle

99 by 2997 mmReference

—

Front tread

147 to 254 cmReference

—

Rear tread

152 to 334 cmReference

—

Shipping

6758 kgReference

—

Operating

8164 kgReference

—

Ballasted

9239 kgReference

—

Standard tires (ag)

—

Front: 420/90R30. Rear: 480/80R46Reference

Shipping weight

—

8042 kgReference

Bar rear axle

—

100 by 3009 mmReference

4840 Serial Number Location

4840 Serial Numbers

1978

1000Reference

—

1979

4233Reference

—

1980

7539Reference

—

1981

11042Reference

—

1982

14933Reference

—

Electrical

Ground

negativeReference

Charging system

alternatorReference

Batteries

2Reference

Battery volts

6Reference

12Reference

Battery options

2 | 2Reference

—

Charging amps

—

200Reference

Battery CCA

—

925Reference

Total cold cranking amps

—

925Reference

Test results

Fuel use

42.8 l/hourReference

40.5 l/hourReference

Max pull

7850 kgReference

—

General

Make & Model

John DeereReference

Cruise control

—

TRUEReference

Rear Axle Type

—

BarReference

Country of manufacturer

—

USAReference

PTO

Rear PTO Power

AvailableReference

Rear PTO RPM

1,000 (1.75)Reference

1,000 RPMReference

PTO Power

—

180 hpReference

Engine Speed on Rear PTO speed

—

1,000@1,950 RPMReference

Hydraulics

Hydraulics Type

closed centerReference

Closed Center Load-SensingReference

Remote Valves

2 or 3Reference

2 to 7 ValvesReference

Rear Hitch category (SAE designation)

Category III/IIINReference

Category IIIReference

Pump Rated Output (total)

—

45 gpmReference

Maximum operating pressure

—

2,900 psiReference

Rear Hitch maximum lift capacity

—

6,350.3 kgReference

Dimensions & weight

Height Over Cab

297.2 cmReference

310.9 cmReference

Overall Height

297.2 cmReference

—

Overall Length

449.6 cmReference

571.5 cmReference

Overall Width

243.8 cmReference

Drawbar clearance

37.8 cmReference

46.4 cmReference

Front axle clearance

66 cmReference

69.6 cmReference

Overall weight

—

8,042.6 kgReference

Wheels & tyres

Rear wheel tread range

18.4-38, 24.5-32, 30.5-32, 20.8-38, 18.4-42 inchReference

—

Front Wheel tread range

11.00-16, 10.00-16, 14L-16.1, 16.5L-16.1, 9.50-20Reference

—

Rear Wheel Type

—

480/80R46Reference

Front Wheel Type

—

420/90R30Reference

7930 Serial Number Location

Speeds

Steering & brakes

Brakes

—

Hydraulic Wet DiscReference

Steering type

—

PowerReference

Operator station

Cab Availability

—

AvailableReference

Seat Suspension

—

TRUEReference

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.