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Tractor · 1976Unverified

John Deere 840

Name: John Deere 840
Brand: John Deere

John Deere 840 — Utility tractor · 34 hp. Reference specifications; pending source verification.

The John Deere 840 is a compact tractor with a rated output of 34 hp, produced from 1976 to 1986. It features a 3-cylinder diesel liquid-cooled engine, driving through two-wheel drive with a powershift transmission. The listed weight of the John Deere 840 is 2269 kg, making it suitable for tasks on areas of approximately 200 acres.

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

Rated power

34 hp

Weight

2269 kg

Catalogue coverage

Variants represented

Richest spec table

70 rows

Recorded power

34 hp

Recorded weight

2269 kg

Transmissions

8-speed collar shift

Production years

1976-1986

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Utility tractorReference

Built in Mannheim, Baden-Württemberg, GermanyReference

Two-wheel driveReference

Final drivesplanetaryReference

Manual steeringReference

Hydraulic wet disc brakesReference

Four-post ROPS.Reference

Engine

John Deere 2.9L 3-cyl dieselReference

Engine28.0 kWReference

John DeereReference

dieselReference

3-cylinderReference

liquid-cooledReference

Displacement2.9 LReference

Bore/Stroke106 x 110 mmReference

Power28.0 kWReference

Fuel systemdirect injectionReference

Compression16.8:1Reference

Rated RPM2400Reference

Operating RPM1300-2400Reference

Starter volts12Reference

Starter power3.0 kWReference

Oil capacity7.0 LReference

Coolant capacity10.5 LReference

Transmission

8-speed collar shiftReference

16-speed two-speed power shiftReference

Typecollar shiftReference

Gears8 forward and 4 reverseReference

Clutchdry discReference

Typetwo-speed power shiftReference

Gears16 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)25.0 kWReference

Hydraulic system40.9 LReference

Typeclosed centerReference

Capacity40.9 LReference

Pump flow23.1 lpmReference

Rear TypeII/IReference

Rear lift2212 kgReference

Rear PTOliveReference

Rear PTOindependentReference

Clutchdry discReference

Clutchwet discReference

Rear PTO Type540Reference

Engine RPM540@2400Reference

Front PTOoptionalReference

Front PTO Type1000Reference

Engine RPM1000@2070Reference

Capacities

Fuel78.0 LReference

Dimensions

Wheelbase188 cmReference

Weight2269 kgReference

Front tire6.50-16Reference

Rear tire12.4-32Reference

Ag front6.50-16Reference

Ag rear12.4-32Reference

Ag rear9.5-36Reference

Ag rear12.4-28Reference

Length350 cmReference

Width166 cmReference

Height (ROPS)239 cmReference

Height (exhaust)261 cmReference

Shipping weight2269 kgReference

Clearance (front axle)53 cmReference

Front tread125 to 201 cmReference

Rear tread135 to 185 cmReference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps33Reference

Batteries2Reference

Battery volts12Reference

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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