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Tractor · 1979Unverified

John Deere 1840

John Deere 1840 — Utility tractor · 70 hp. Reference specifications; pending source verification.

The John Deere 1840 is a tractor rated at 70 hp, positioning it in the middle of its class for power output. Manufactured between 1979 and 1982, this model features a 4-cylinder diesel liquid-cooled engine, which drives a four-wheel drive system via a powershift transmission. The listed weight of the John Deere 1840 is 2483 kg, and it is suited to agricultural jobs covering approximately 200 acres.

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

Rated power
70 hp
Weight
2483 kg

Catalogue coverage

Variants represented
2
Richest spec table
68 rows
Recorded power
70 hp
Recorded weight
2483 kg
Transmissions
8-speed unsynchronized gear
Production years
1979-1982
Verified variants
0

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference
Utility tractorReference
Built in Mannheim, Baden-Württemberg, GermanyReference
The Canadian-market 1840 is similar to the US 2440 model.Reference
Two- or four-wheel driveReference
Final drivesplanetaryReference
Differential lockmechanical rearReference
Power steeringReference
Wet disc brakesReference
Open operator station. Cab optional.Reference

Engine

John Deere 3.9L 4-cyl dieselReference
Fuel tank95.0 LReference
Engine (net)52.2 kWReference
John DeereReference
dieselReference
4-cylinderReference
liquid-cooledReference
Displacement3.9 LReference
Bore/Stroke106 x 110 mmReference
Power (net)52.2 kWReference
Compression16.8:1Reference
Rated RPM2500Reference
Idle RPM800-2660Reference
Operating RPM1300-2500Reference
Torque230.5 NmReference
Torque RPM1300Reference
Firing order1-3-4-2Reference
Starter volts12Reference
Intake valve clearance0.356 mmReference
Exhaust valve clearance0.457 mmReference

Transmission

8-speed unsynchronized gearReference
8-speed partially synchronizedReference
16-speed two-speed power shiftReference
Typeunsynchronized gearReference
Gears8 forward and 4 reverseReference
Clutchdry discReference
Four gears in two ranges, plus reverse range.Reference
TransmissionTop-Shaft SynchronizedReference
Typepartially synchronizedReference
Four synchronized gears in two ranges, plus reverse range.Reference
TransmissionHi-LoReference
Typetwo-speed power shiftReference
Gears16 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)44.7 kWReference
Typeclosed centerReference
Rear TypeII/IReference
Controlposition and draft controlReference
Rear PTOindependentReference
Rear PTO Type540 (1.375)Reference
Rear PTO Type540/1000 (1.375)Reference

Dimensions

Wheelbase227 cmReference
Weight2483 kgReference
Front tire7.50-16Reference
Rear tire15.5-38Reference
Ag front7.50-16Reference
Ag rear15.5-38Reference
Ag rear16.9-30Reference
Length373 cmReference
Height (hood)157 cmReference

John Deere 1840 attachments

front-end loaderReference

Electrical

GroundnegativeReference
Charging systemalternatorReference
Charging amps33Reference
Charging amps55Reference
Charging volts14Reference
Batteries2Reference
Battery volts12Reference

Speeds

With 15.5-38 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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