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Tractor · 1979Unverified

John Deere 8440

Name: John Deere 8440
Brand: John Deere

John Deere 8440 — Iron Horses Series · 180 hp. Reference specifications; pending source verification.

The John Deere 8440 is a tractor model with a rated output of 180 hp, categorising it as a high-powered machine in its class. It was manufactured from 1979 to 1982. The tractor is equipped with a 6-cylinder turbocharged diesel liquid-cooled engine, which powers four-wheel drive via a powershift transmission. Its listed weight is 12061 kg, suitable for applications involving approximately 600–1,500 acres.

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

Rated power

180 hp

Max power

119.7 kW

Weight

12061 kg

Catalogue coverage

Variants represented

Richest spec table

85 rows

Recorded power

180 hp

Recorded weight

12061 kg

Transmissions

16-speed partial power shift

Production years

1979-1982

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Four-wheel Drive (4WD) tractorReference

Built in Waterloo, Iowa, USAReference

Original price was $64,000 in 1982Reference

Four-wheel driveReference

Differential lockhydraulic front and rearReference

Articulated power steeringReference

Hydraulic wet disc brakesReference

Cab standard.Reference

Engine

John Deere 7.6L 6-cyl dieselReference

Engine160.3 kWReference

Drawbar (tested)119.7 kWReference

John DeereReference

turbocharged dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.6 LReference

Bore/Stroke116 x 121 mmReference

Power160.3 kWReference

Compression15.5:1Reference

Rated RPM2100Reference

Idle RPM800-2300Reference

Operating RPM1500-2100Reference

Firing order1-5-3-6-2-4Reference

Starter volts12Reference

Oil capacity20.8 LReference

Coolant capacity37.9 LReference

Power at rated engine speed134.1 kWReference

Max power119.7 kWReference

Transmission

16-speed partial power shiftReference

TransmissionJohn Deere Quad-RangeReference

Typepartial power shiftReference

Gears16 forward and 6 reverseReference

Clutchhydraulic wet discReference

Oil capacity151.4 LReference

Four gears (1-4) in four ranges (A-D). Tractor must be stopped to select range. Power shift between gears 1-2 and 3-4 within range.Reference

PTO & Hydraulics

PTO (claimed)130.5 kWReference

PTO (tested)134.1 kWReference

Hydraulic system151.4 LReference

Typeclosed centerReference

Capacity151.4 LReference

Valves2Reference

Pump flow124.9 lpmReference

Rear TypeIIIReference

Rear lift3876 kgReference

Rear PTOindependentReference

Rear PTO Type1000Reference

Capacities

Fuel590.5 LReference

Dimensions

Wheelbase317 cmReference

Weight12061 kgReference

Front tire18.4-34Reference

Rear tire18.4-34Reference

Ag front18.4-34Reference

Ag rear18.4-34Reference

Length567 cmReference

Operating weight12061 kgReference

Ground clearance49 cmReference

Front axle99 by 2433 mmReference

Front axle99 by 3007 mmReference

Rack-and-pinion rear axle99 by 2433 mmReference

Rack-and-pinion rear axle99 by 3007 mmReference

Front tread160 to 330 cmReference

Rear tread160 to 330 cmReference

8440 Serial Number Location

Serial number plate on the rear of transmission case.Reference

8440 Serial Numbers

19791000Reference

19802266Reference

19813758Reference

19825235Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps90Reference

Batteries2Reference

Battery CCA850Reference

Battery volts6Reference

John Deere 8440 Height

Hood221 cmReference

Cab321 cmReference

Exhaust341 cmReference

Test results

Diesel 16-speed 4WDSeptember 10, 1979 - September 15, 1949Link: Nebraska Tractor Test 1323 fileReference

PTO performanceReference

Fuel use42.8 l/hourReference

Drawbar performanceReference

Fuel use42.4 l/hourReference

Max pull11513 kgReference

Speeds

With 18.4-38 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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