International Harvester 686

International Harvester 686The International Harvester 686 is a 2WD utility tractor manufactured by International Harvester from 1976 to 1980.

The International Harvester 686 is equipped with one of three engines: a 5.1 L (310.0 cu·in) or a 5.1 L (312.0 cu·in) six-cylinder diesel engine or a 4.8 L (291.0 cu·in) six-cylinder gasoline engine and a two-speed power shift transmission with 10 forward and 2 reverse gears.

The tractor could be equipped with the following engines:

  • International Harvester D310. It is a 5.1 L, 5,080 cm2, (310.0 cu·in) six-cylinder natural aspirated diesel engine with 98.0 mm (3.86 in) of the cylinder bore and 111.0 mm (4.37 in) of the piston stroke.
  • International Harvester D312 (after 1979). It is a 5.1 L, 5,113 cm2, (312.0 cu·in) six-cylinder natural aspirated diesel engine with 98.0 mm (3.86 in) of the cylinder bore and 112.0 mm (4.41 in) of the piston stroke.
  • International Harvester C291. It is a 4.8 L, 4,769 cm2, (291.0 cu·in) six-cylinder natural aspirated gasoline engine. The cylinder bore is 95.0 mm (3.74 in) and the piston stroke is 112.0 mm (4.41 in).

The IH 686 is equipped with power steering, disc brakes, two-post fixed ROPS, and 117.3 liters (31 US gal.; 25.8 Imp. gal) fuel tank.

International Harvester 686 Specifications

General Specifications
Model International Harvester 686
Length 4,110 mm (161.8 in)
Width 2,270 mm (89.4 in)
Height (exhaust) 2,660 mm (104.7 in)
Wheel base 2,610 mm (102.8 in)
Weight (ballasted) 4,690 kg (10,340 lbs)
Fuel tank capacity 117.3 liters (31 US gal.; 25.8 Imp. gal)
Battery
Cabin type Two-post fixed ROPS
Engine
Engine model International Harvester D310
Engine type Four-stroke, liquid-cooled, inline
Cylinders 6
Fuel type Diesel
Displacement 5.1 L, 5,080 cm2, (310.0 cu·in)
Bore and stroke 98.0 mm X 111.0 mm (3.86 in X 4.37 in)
Horsepower
Starter Electric
Engine
Engine model International Harvester D312
Engine type Four-stroke, liquid-cooled, inline
Cylinders 6
Fuel type Diesel
Displacement 5.1 L, 5,113 cm2, (312.0 cu·in)
Bore and stroke 98.0 mm X 112.0 mm (3.86 in X 4.41 in)
Horsepower
Starter Electric
Oil capacity: 11.4 L (12 US. qt, 10 Imp. qt.)
Coolant capacity: 19.9 L (21 US. qt, 17.5 Imp. qt.)
Engine
Engine model International Harvester C291
Engine type Four-stroke, liquid-cooled, inline
Cylinders 6
Fuel type Gasoline
Displacement 4.8 L, 4,769 cm2, (291.0 cu·in)
Bore and stroke 95.0 mm X 112.0 mm (3.74 in X 4.41 in)
Horsepower
Starter Electric
Transmission and chassis
Chassis 4×2 2WD
Steering type Power
Brakes Disc
Transmission model Torque Amplifier
Transmission type Two-speed power shift
Gears 10 forward and 2 reverse
Speed Forward: 26.4 kmh (16.4 mph) Reverse: 4.7 (2.9 mph)
Transmission oil capacity 60.6 L (16 US. gal, 13.3 Imp. gal.)
Tires
Front tires Ag: 7.50-16
Rear tires Ag: 15.5-38
Three-Point Hitch
Category II
Control type
Lift capacity (at ends)
PTO (Power take-off shaft)
Rear PTO type Independent
Rear PTO speed 540 rpm
Hydraulic system
Hydraulic type Open center
Hydraulic capacity 60.6 L (16 US. gal, 13.3 Imp. gal.)
Total flow 12.0 gpm (45.4 lpm)
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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