International Harvester 686

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3-Point Hitch
Rear type 2
Control -
Rear lift -
Front hitch -
Front lift -
Power Take-off (PTO):
Rear PTO independent
Clutch -
Rear RPM 540
Front PTO -
Engine RPM -
Capacity
Fuel 31 gal [117.3 L]
Dimensions & Tires
Wheelbase 103 inches [261 cm]
Weight 7770 to 10340 pounds
Front tire 7.50-16
Rear tire 15.5-38
International Harvester 686 Power:
Engine gross -
Engine max -
Mechanical
Chassis 4x2 2WD
Differential lock -
Steering hydrostatic power
Brakes -
Trailer brakes -
Cab -
Hydraulics
Type 2
Rear valves -
Mid valves -
Pump flow hydrostatic powe
SCV flow -
Total flow 12 gpm [45.4 lpm]
Electrical
Ground -
Charging system -
Charging amps -
Charging volts -
Battery
Number -
Cold-cranking amps -
Volts -
Engine Detail
German (Nuess) built diesel that replaced the 312 diesel in 1979.
International Harvester D310
diesel
6-cylinder
liquid-cooled
310 ci [5.1 L]
Engine specifications
Bore/Stroke 3.875x4.375 inches [98 x 111 mm]
Emissions -
Emission control -
Rated Power -
Maximum Power -
Air cleaner dry
Pre-heating -
Compression -
Fuel system -
Rated RPM 2000
Operating RPM -
Torque -
Torque RPM -
Starter -
Starter volts 12
Oil capacity 12 qts [11.4 L]
Oil change -
Coolant capacity 21 qts [19.9 L]
Torque Amplifier
Type -
Gears 10 forward and 2 reverse
Clutch -
Speeds With 15.5-38 rear tires.
International Harvester 686 Tires
Ag front 7.50-16
Ag rear 15.5-38
Standard tires (ag) -
Dimensions
Weight (operating) -
Weight (max capacity) -
Front axle load -
Rear axle load -
Wheelbase 103 inches [261 cm]
Length 162 inches [411 cm] (with 3-point)
With hitch Length: -
Width 89.4 inches [227 cm] (min)
Height (hood) -
Height (cab) -
Front axle -
Rear axle -
Height (exhaust) -
Clearance (front axle) -
Clearance (rear axle) -
Clearance (drawbar) -
Test name
Test Date November 3 - 14, 1973
Test Type 312 diesel Torque Amplifier 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 66.29 hp [49.4 kW]
PTO fuel use (engine speed) 4.7 gal/hour [17.8 l/hour]
PTO fuel use (PTO speed) -
Drawbar power (max) 58.01 hp [43.3 kW]
Drawbar fuel use (max) 4.6 gal/hour [17.4 l/hour]
Drawbar pull (max) 8,012 lbs [3634 kg]
Max pull gear 2-TA
Test name
Test Date November 5 - December 3, 1973
Test Type Gasoline Torque Amplifier 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 66.30 hp [49.4 kW]
PTO fuel use (engine speed) 12.0 gal/hour [45.4 l/hour]
PTO fuel use (PTO speed) -
Drawbar power (max) 57.29 hp [42.7 kW]
Drawbar fuel use (max) 5.7 gal/hour [21.6 l/hour]
Drawbar pull (max) 7,981 lbs [3620 kg]
Max pull gear 2-TA
Test name
Test Date March 26 - April 16, 1980
Test Type 310 diesel Torque Amplifier 2WD
PTO power (max) -
PTO fuel use (max) -
PTO power (rated engine speed) 66.36 hp [49.5 kW]
PTO fuel use (engine speed) 4.1 gal/hour [15.5 l/hour]
PTO fuel use (PTO speed) -
Drawbar power (max) 57.71 hp [43.0 kW]
Drawbar fuel use (max) 4.1 gal/hour [15.5 l/hour]
Drawbar pull (max) 8,013 lbs [3634 kg]
Max pull gear 1-Direct