Tractor · 1978Unverified
John Deere 4640
John Deere 4640 — Iron Horses Series · 156 hp. Reference specifications; pending source verification.
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
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
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
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
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
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.