Tractor · 1977Unverified
John Deere 2840
John Deere 2840 — Utility tractor · 81 hp. Reference specifications; pending source verification.
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
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.