Wikitractor

International Harvester 686

Production ended · 2WD

PTO power · tested

66.4 hp

Weight
7,770 lb
Engines
3 Diesel · Gasoline
Built
6,000
Price new · 1980
$14,700

Power

Engineno record
PTO66.4 hp tested
Drawbar58 hp tested
Listed power73 hp PTO basis

Engines

International Harvester 5.1L 6-cyl dieselDiesel · 6 cyl310 ci
International Harvester 4.8L 6-cyl gasolineGasoline · 6 cyl291 ci
EngineDiesel · 6 cyl312 ci
Engine details
International Harvester 5.1L 6-cyl diesel
Bore × stroke
3.88 in × 4.38 in
Rated speed
2,000 rpm
Cooling
liquid-cooled
Notes
German (Nuess) built diesel that replaced the 312 diesel in 1979.
International Harvester 4.8L 6-cyl gasoline
Bore × stroke
3.75 in × 4.39 in
Rated speed
2,000 rpm
Cooling
liquid-cooled
Engine
Bore × stroke
3.88 in × 4.41 in
Rated speed
2,000 rpm
Cooling
liquid-cooled

Transmissions

Torque Amplifiertwo-speed power shift10F / 2R

Weight

Weight7,770 lb shipping
Shipping7,770 lb
Ballasted10,340 lb

Dimensions

Wheelbase103 in
Length162 in
Width89.4 in
Front tread, narrowest58 in
Front tread, widest82 in
Rear tread, narrowest56 in
Rear tread, widest96 in

Capacities

Fuel tank31 gal
Hydraulic system16 gal

Hydraulics

Systemopen center
Pump flowno record
Total flow12 gpm

Hitch

Rear hitch categoryII
Rear lift capacityno record

PTO

Rear PTOindependent
Rear PTO speeds540 (1.375)

Chassis

Drive2WD
SteeringPower steering
BrakesDisc brakes
CabTwo-post fixed ROPS

Tires

Front7.50-16
Rear15.5-38

Production

Total built6,000
Price new$14,700 (1980)
Built byInternational Harvester

Serial numbers

Clutch housing on right side.

YearFirst serial
19767500
19777729
19789899
197911417
198012923

Literature

  • 1979 Buyer's Guide International Harvester
  • Agricultural Equipment Reference Catalog International Harvester, 1980