Search/Industrial Tractor/John Deere/644B

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Industrial Tractor · 1974Unverified

John Deere 644B

Name: John Deere 644B
Brand: John Deere

John Deere 644B — Wheel Loader · 160 hp. Reference specifications; pending source verification.

The John Deere 644B is a heavy-duty industrial tractor with a rated power output of 160 horsepower, positioning it at the more powerful end of its class. This model was manufactured from 1974 to 1980. Equipped with a 6-cylinder turbocharged intercooled diesel liquid-cooled engine, it features a four-wheel drive system paired with a powershift transmission. The tractor's operating weight is listed at 12,746 kilograms, making it suitable for operations spanning 600 to 1,500 acres.

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

Rated power

160 hp

Weight

12746 kg

Catalogue coverage

Variants represented

Richest spec table

55 rows

Recorded power

160 hp

Recorded weight

12746 kg

Transmissions

4-speed power shift

Production years

1974-1980

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.Reference

Engine

John Deere 8.7L 6-cyl dieselReference

Fuel tank212.0 LReference

Engine (gross)119.3 kWReference

Engine (net)108.1 kWReference

John DeereReference

turbocharged intercooled dieselReference

6-cylinderReference

liquid-cooledReference

Displacement8.7 LReference

Bore/Stroke121 x 127 mmReference

Power (net)108.1 kWReference

Power (gross)119.3 kWReference

Air cleanerdryReference

Rated RPM2200Reference

Torque585.8 NmReference

Torque RPM1500Reference

StarterelectricReference

Starter volts12Reference

Oil capacity22.7 LReference

Coolant capacity46.4 LReference

Transmission

4-speed power shiftReference

Typepower shiftReference

Gears4 forward and 2 reverseReference

PTO & Hydraulics

Typeopen centerReference

Pressure155.1 barReference

Pump flow236.6 lpmReference

Steering flow100.3 lpmReference

Steering press.162.0 barReference

Dimensions

Wheelbase264 cmReference

Weight12746 kgReference

Front tire20.5-25Reference

Rear tire20.5-25Reference

Industrial front20.5-25Reference

Industrial rear20.5-25Reference

Industrial front17.5-25Reference

Industrial rear17.5-25Reference

Length645 cmReference

Operating weight12746 kgReference

Ground clearance43 cmReference

Front tread203 cmReference

Rear tread203 cmReference

John Deere 644B attachments

front-end loaderReference

Electrical

Charging systemalternatorReference

Batteries2Reference

Battery volts12Reference

John Deere 644B Height

ROPS307 cmReference

Cab322 cmReference

Exhaust294 cmReference

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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