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Tractor · 1977Unverified

International Harvester 684

International Harvester 684 — 84 Series · 63 hp. Reference specifications; pending source verification.

The International Harvester 684 is a tractor model with an engine rating of approximately 63 hp, positioning it at the lower end of its class. Produced between 1977 and 1984, this tractor features a 4-cylinder diesel liquid-cooled engine paired with four-wheel drive and a powershift transmission. Its operating weight ranges from 5620 to 6765 pounds. The 684 is suitable for use on areas of up to 200 acres.

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

Rated power
63 hp
Max power
40.7 kW
Weight
5620 to 6765 pounds

Catalogue coverage

Variants represented
2
Richest spec table
108 rows
Recorded power
63 hp
Transmissions
8-speed syncromesh
Production years
1977-1984
Verified variants
0

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerInternational HarvesterReference
Utility tractorReference
Built in Doncaster, EnglandReference
Original price was $21,100 in 1984Reference
Two- or four-wheel driveReference
Power steeringReference
Independent hydraulic wet disc brakesReference
ROPS canopy or cab optionalReference

Engine

International Harvester 3.9L 4-cyl dieselReference
Engine51.5 kWReference
Drawbar (claimed)41.7 kWReference
Plows4Reference
Drawbar (tested)40.7 kWReference
International Harvester D-239Reference
dieselReference
4-cylinderReference
liquid-cooledReference
Displacement3.9 LReference
Bore/Stroke98 x 129 mmReference
Power51.5 kWReference
Air cleanerdryReference
Rated RPM2400Reference
Starter volts12Reference
Oil capacity8.3 LReference
Coolant capacity13.6 LReference
Power at rated engine speed46.6 kWReference
Max power40.7 kWReference

Transmission

8-speed syncromeshReference
16-speed two-speed power shiftReference
TypesyncromeshReference
Gears8 forward and 4 reverseReference
Clutchdry discReference
Oil capacity34.1 LReference
Four synchronized gears in high, low, and reverse ranges.Reference
TransmissionTorque AmplifierReference
Typetwo-speed power shiftReference
Gears16 forward and 8 reverseReference
The optional Torque Amplifier (TA) provides a clutchless on-the-move shift from direct drive (DD) to a lower TA speed.Reference

PTO & Hydraulics

PTO (claimed)46.6 kWReference
PTO (tested)46.6 kWReference
Hydraulic system34.1 LReference
Typeopen centerReference
Capacity34.1 LReference
Valves1 or 2Reference
Pump flow49.2 lpmReference
Pump flow58.3 lpmReference
Rear TypeIIReference
Controlposition and draft controlReference
Rear lift1632 kgReference
Rear PTOindependentReference
Clutchhydraulic wet discReference
Rear PTO Type540Reference
Power at rated PTO speed43.8 kWReference

Capacities

Fuel75.7 LReference

Dimensions

Utility Wheelbase223 cmReference
Row-crop Wheelbase214 cmReference
4WD Wheelbase216 cmReference
Low-profile Wheelbase212 cmReference
Weight5620 to 6765 poundsReference
Front tire7.50-16Reference
Rear tire16.9-30Reference
Ag front7.50-16Reference
Ag rear16.9-30Reference
Utility Length360 cmReference
Row-crop Length353 cmReference
4WD Length373 cmReference
Low-profile Length360 cmReference
Utility Width187 cmReference
Row-crop Width190 cmReference
4WD Width187 cmReference
Low-profile Width199 cmReference
Utility Ground clearance45 cmReference
Row-crop Ground clearance45 cmReference
4WD Ground clearance45 cmReference
Low-profile Ground clearance27 cmReference
Bar rear axle69 mmReference
Utility Shipping2594 kgReference
Row-crop Shipping2707 kgReference
4WD Shipping3068 kgReference
Low-profile Shipping2549 kgReference
Ballasted4381 kgReference
Utility Steering wheel160 cmReference
Row-crop Steering wheel160 cmReference
4WD Steering wheel160 cmReference
Low-profile Steering wheel143 cmReference

684 Serial Number Location

Serial number plate on the the front axle support on right side of tractor.Reference

684 Serial Numbers

1978501Reference
19791687Reference
19803533Reference
19816037Reference
19828001Reference
19838512Reference
19849352Reference
FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference
Charging amps45Reference
Battery volts12Reference

International Harvester 684 Height

ROPS254 cmReference

Test results

Diesel 8-speed 2WDMay 24 - June 4, 1979Link: Nebraska Tractor Test 1314 fileReference
PTO performanceReference
Fuel use15.9 l/hourReference
Fuel use14.4 l/hourReference
Drawbar performanceReference
Fuel use15.5 l/hourReference
Gear 1H used for power test.Reference
Max pull3110 kgReference
Gear 2L used for pull test.Reference

Speeds

With 16.9-30 rear 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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