Search/Industrial Tractor/John Deere/644D

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Industrial Tractor · 1985Unverified

John Deere 644D

Name: John Deere 644D
Brand: John Deere

John Deere 644D — Wheel Loader · 165 hp. Reference specifications; pending source verification.

The John Deere 644D is an industrial tractor rated at 165 hp, positioning it among the higher-powered machines in its class. Manufactured between 1985 and 1986, this model features a 6-cylinder turbocharged diesel liquid-cooled engine, driving through four-wheel drive with a powershift transmission. The listed operating weight is 13299 kg, suitable for applications involving around 600–1,500 acres.

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

Rated power

165 hp

Weight

13299 kg

Catalogue coverage

Variants represented

Richest spec table

56 rows

Recorded power

165 hp

Recorded weight

13299 kg

Transmissions

4-speed power shift

Production years

1985-1986

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Wheel LoaderReference

Four-wheel driveReference

Final drivesinboard planetaryReference

Articulated power steeringReference

Hydraulic wet disc brakesReference

Four-post ROPS with canopy. Cab optional with available air-conditioning.Reference

Engine

John Deere 7.6L 6-cyl dieselReference

Fuel tank253.6 LReference

Engine (gross)123.0 kWReference

Engine (net)115.6 kWReference

John Deere 6-466TReference

turbocharged dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.6 LReference

Bore/Stroke116 x 121 mmReference

Power (net)115.6 kWReference

Power (gross)123.0 kWReference

Air cleanerdryReference

Rated RPM2200Reference

Torque650.9 NmReference

Torque RPM1400Reference

StarterelectricReference

Starter volts12Reference

Oil capacity18.9 LReference

Coolant capacity27.4 LReference

Transmission

4-speed power shiftReference

Typepower shiftReference

Gears4 forward and 2 reverseReference

PTO & Hydraulics

Typeopen centerReference

Pressure181.0 barReference

Pump flow238.5 lpmReference

Dimensions

Wheelbase292 cmReference

Weight13299 kgReference

Front tire20.5-25Reference

Rear tire20.5-25Reference

Industrial front20.5-25Reference

Industrial rear20.5-25Reference

Industrial front16.00-24Reference

Industrial front23.5-25Reference

Industrial rear16.00-24Reference

Industrial rear23.5-25Reference

Length702 cmReference

Height (ROPS)320 cmReference

Height (exhaust)312 cmReference

Operating weight13299 kgReference

Front tread203 cmReference

Rear tread203 cmReference

John Deere 644D attachments

front-end loaderReference

Electrical

Charging systemalternatorReference

ROPS Charging amps42Reference

Cab Charging amps90Reference

Batteries2Reference

Battery CCA625Reference

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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