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Tractor · 1978Unverified

John Deere 4640

Name: John Deere 4640
Brand: John Deere

John Deere 4640 — Iron Horses Series · 156 hp. Reference specifications; pending source verification.

The John Deere 4640 tractor model features a rated output of 156 hp, positioning it within the higher-powered range of its class. Manufactured from 1978 to 1982, this model is equipped with a 6-cylinder turbocharged intercooled diesel liquid-cooled engine, which powers four-wheel drive through a hydrostatic transmission. The listed weight of the 4640 ranges from 14350 to 15700 pounds. It is designed for tasks on areas of approximately 200–800 acres.

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

Rated power

156 hp

Max power

97.2 kW

Weight

14350 to 15700 pounds

Catalogue coverage

Variants represented

Richest spec table

131 rows

Recorded power

156 hp

Transmissions

16-speed partial power shift

Production years

1978-1982

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Row-Crop tractorReference

Built in Waterloo, Iowa, USAReference

Original price$46,316 (1982 Quad-Range ROPS 2WD )Reference

Original price$53,123 (1982 Power Shift Cab 2WD )Reference

Drive4x2 2WDReference

Drive4x4 HFWD 4WDReference

Differential lockpedal-actuated hydraulicReference

Steeringhydrostatic powerReference

Differential hydraulic wet disc brakesReference

Sound-Gard cab standard.Reference

Engine

John Deere 7.6L 6-cyl dieselReference

Drawbar (tested)98.8 kWReference

John DeereReference

turbocharged intercooled dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.6 LReference

Bore/Stroke116 x 121 mmReference

Pre-heatingetherReference

Compression15.5:1Reference

Rated RPM2200Reference

Idle RPM800-2400Reference

Operating RPM1500-2200Reference

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

Starter volts12Reference

Oil capacity18.9 LReference

Coolant capacity36.0 LReference

Power at rated engine speed116.6 kWReference

Max power97.2 kWReference

Power at rated engine speed116.3 kWReference

Max power98.8 kWReference

Fuel TypeDieselReference

No of Cylinders6-cylinderReference

Rated engine speed2,200 | 1,500-2,200 RPMReference

Bore and stroke4.5,625x4.75 inchesReference

Compression ratio15.5:1Reference

Cooling systemliquid-cooled | 38 qtsReference

Transmission

16-speed partial power shiftReference

8-speed full power shiftReference

TransmissionJohn Deere Quad-RangeReference

Typepartial power shiftReference

Gears16 forward and 6 reverseReference

Four gears (1-4) in four ranges (A-D). Power shift between pairs 1-2 and 3-4 in each range, with synchronized shift between 2-3. Two reverses in ranges A-C. Tractor must be stopped, and clutch used, to shift ranges. Power shift is provided hy a hydraulically-controlled planetary that provides an under-drive to each gear.Reference

TransmissionJohn Deere PowerShiftReference

Typefull power shiftReference

Gears8 forward and 4 reverseReference

Clutchless shift-on-the-move power shift between all eight forward and four reverse gears. Inching pedal provided for hooking up implements and other precision work.Reference

forward and reverse options16 forward and 6 reverse | 8 forward and 4 reverseReference

PTO & Hydraulics

PTO (claimed)115.6 kWReference

PTO (tested)116.6 kWReference

Hydraulic system62.5 LReference

Typeclosed centerReference

Capacity62.5 LReference

Valves2 or 3Reference

Pump flow87.1 lpmReference

Rear TypeIII/IIINReference

Rear lift3323 kgReference

Rear PTOindependentReference

Rear PTO Type1000 (1.75)Reference

Power at rated PTO speed117.1 kWReference

Capacities

Fuel314.2 LReference

Dimensions

Wheelbase300 cmReference

Weight14350 to 15700 poundsReference

Front tire11.00-16Reference

Rear tire18.4-38Reference

Ag front11.00-16Reference

Ag rear18.4-38Reference

Ag front10.00-16Reference

Ag front14L-16.1Reference

Ag front16.5L-16.1Reference

Ag front9.50-20Reference

Ag rear24.5-32Reference

Ag rear30.5-32Reference

Ag rear20.8-38Reference

Ag rear18.4-42Reference

Length434 cmReference

Width243 cmReference

Width274 cmReference

Width299 cmReference

Height (cab)297 cmReference

Ground clearance37 cmReference

Clearance (front axle)66 cmReference

Clearance (rear axle)71 cmReference

Rack-and-pinion rear axle99 by 2438 mmReference

Rack-and-pinion rear axle99 by 2743 mmReference

Rack-and-pinion rear axle99 by 2997 mmReference

Front tread147 to 254 cmReference

Rear tread152 to 334 cmReference

Shipping6509 kgReference

Operating7121 kgReference

Ballasted8430 kgReference

John Deere 4640 attachments

front-end loaderReference

4640 Serial Number Location

Serial number plate on the rear of the 4640, above the PTO shaft.Reference

4640 Serial Numbers

19781000Reference

19797422Reference

198013860Reference

198119459Reference

198225729Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Batteries2Reference

Battery volts6Reference

Battery options2 | 2Reference

Test results

NTTL 1264: diesel 16-speed 2WDReference

NTTL 1358: diesel 8-speed 2WDReference

Diesel 16-speed 2WDNovember 2 - 21, 1977Link: Nebraska Tractor Test 1264 fileReference

PTO performanceReference

Fuel use37.9 l/hourReference

Drawbar performanceReference

Fuel use37.1 l/hourReference

Max pull6968 kgReference

Diesel 8-speed 2WDAugust 18 - 28, 1980Link: Nebraska Tractor Test 1358 fileReference

Fuel use37.5 l/hourReference

Gear 4 used for power test.Reference

Max pull7252 kgReference

Gear 2 used for pull test.Reference

General

Make & ModelJohn DeereReference

PTO

Rear PTO PowerAvailableReference

Hydraulics

Hydraulics Typeclosed centerReference

Remote Valves2 or 3Reference

Rear Hitch category (SAE designation)Category III/IIINReference

Dimensions & weight

Height Over Cab297.2 cmReference

Overall Height297.2 cmReference

Overall Length434.3 cmReference

Overall Width243.8 cmReference

Front axle clearance66 cmReference

Wheels & tyres

Rear wheel tread range18.4-38, 24.5-32, 30.5-32, 20.8-38, 18.4-42 inchReference

Front Wheel tread range11.00-16, 10.00-16, 14L-16.1, 16.5L-16.1, 9.50-20Reference

Steering & brakes

Steering typehydrostatic powerReference

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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