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Tractor · 1977Unverified

John Deere 2840

Name: John Deere 2840
Brand: John Deere

John Deere 2840 — Utility tractor · 81 hp. Reference specifications; pending source verification.

The John Deere 2840 is a tractor model with a rated power output of 81 hp, placing it in the mid-range of its class. Built from 1977 to 1979, this model features a 6-cylinder diesel liquid-cooled engine and a two-wheel drive powershift transmission. The operating weight of the John Deere 2840 is 3946 kg, and it is designed for use on areas of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

81 hp

Max power

48.4 kW

Weight

3946 kg

Catalogue coverage

Variants represented

Richest spec table

86 rows

Recorded power

81 hp

Recorded weight

3946 kg

Transmissions

12-speed two-speed power shift

Production years

1977-1979

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Utility tractorReference

Built in Mannheim, Baden-Württemberg, GermanyReference

Original price was $17,000 in 1979Reference

Two-wheel driveReference

Final drivesplanetaryReference

Differential lockmechanical rearReference

Steeringpower assistReference

Differential hydraulic wet disc brakesReference

Open operator station. Two-post Roll-Gard ROPS optional.Reference

Variants

3130similar John Deere modelReference

Engine

John Deere 5.4L 6-cyl dieselReference

Drawbar (tested)48.4 kWReference

John DeereReference

dieselReference

6-cylinderReference

liquid-cooledReference

Displacement5.4 LReference

Bore/Stroke102 x 110 mmReference

Air cleanerpaper elementsReference

Compression17.0:1Reference

Rated RPM2500Reference

Starter volts12Reference

Coolant capacity4.7 LReference

Power at rated engine speed60.1 kWReference

Max power48.4 kWReference

Transmission

12-speed two-speed power shiftReference

6-speedReference

TransmissionHi-LoReference

Typetwo-speed power shiftReference

Gears12 forward and 6 reverseReference

Clutchdry discReference

Three gears (1-3) in two ranges (I/II) plus reverse (R) range with a high/low power shift.Reference

Transmissionsliding gearReference

Gears6 forward and 3 reverseReference

PTO & Hydraulics

PTO (tested)60.1 kWReference

Hydraulic system48.8 LReference

Typeclosed centerReference

Capacity48.8 LReference

Valves2Reference

Pump flow87.1 lpmReference

Rear TypeIIReference

Controldraft sensingReference

Rear PTOindependentReference

Clutchhydraulic 300mm discReference

Rear PTO Type540/1000Reference

Power at rated PTO speed56.9 kWReference

Capacities

Fuel106.0 LReference

Dimensions

Wheelbase246 cmReference

Weight3946 kgReference

Front tire7.50-18Reference

Rear tire18.4-34Reference

Ag front7.50-18Reference

Ag rear18.4-34Reference

Ag rear15.5-38Reference

Ag rear16.9-38Reference

Length406 cmReference

Width228 cmReference

Height (steering wheel)187 cmReference

Operating weight3946 kgReference

Ballasted weight4762 kgReference

Clearance (front axle)53 cmReference

Rack-and-pinion rear axleReference

Front tread146 to 0 cmReference

Front tread175 to 238 cmReference

Rear tread154 to 228 cmReference

John Deere 2840 attachments

front-end loaderReference

2840 Serial Number Location

Serial number plate on the right side of the 2840 frame, above the front axle.Reference

2840 Serial Numbers

1977214909Reference

1978264711Reference

1979304654Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Batteries2Reference

Battery volts12Reference

Test results

Diesel 12-speed 2WDJune 14 - 30, 1977Link: Nebraska Tractor Test 1249 fileReference

PTO performanceReference

Fuel use20.1 l/hourReference

Fuel use18.2 l/hourReference

Drawbar performanceReference

Fuel use19.7 l/hourReference

Gear 4H used for power test.Reference

Max pull3803 kgReference

Gear 2H used for pull test.Reference

Speeds

With 18.4-34 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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