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International Harvester 766

The International Harvester 766 is a row-crop tractor produced from 1971 to 1976 as part of the 66 Series. It was built in Rock Island, Illinois, USA, with a total production of 10,799 units. The tractor features two engine options: a 4.8L 6-cylinder gasoline engine and a 5.9L 6-cylinder diesel engine. Transmission options include an 8-speed gear and a 16-speed two-speed power shift with Torque Amplifier. The 766 offers 73.37 hp at the drawbar and 85.45 hp at the PTO. It has two-wheel drive, power steering, hydraulic dry disc brakes, and an open operator station with an optional cab. Hydraulics are open center with a 12 gpm pump flow. The tractor has independent rear PTO with 540/1000 rpm options. Dimensions include a 105 inch wheelbase, 165 inch length, 98 inch width, and 105 inch height. Operating weight is 10,300 lbs, ballasted weight 11,880 lbs. Tires are 9.5L-15 front and 18.4-34 rear. The serial number is located on the left side of the clutch housing.
International Harvester 766IH 766tractor specsrow-crop tractor66 Series4.8L gasoline engine5.9L diesel engine8-speed gear transmission16-speed power shifttractor dimensionstractor power
Power88 hp[P]
Founded1971 - 1976
Model766

Technical Specifications

Detailed specifications and technical data for International Harvester 766

Power

PTO (tested):85.45 hp (63.7 kW)
Drawbar (tested):73.37 hp (54.7 kW)

Engine

C291 type:6-cylinder, liquid-cooled
D360 type:6-cylinder, liquid-cooled
Fuel tank:37 gal (140.0 L)
Rated RPM:2400
Air cleaner:dual stage dry
Bore/Stroke:3.75x4.39 inches (95 x 112 mm)
Compression:17:1
Displacement:291 ci (4.8 L)
Starter volts:12
Engine options:International Harvester 4.8L 6-cyl gasoline, International Harvester 5.9L 6-cyl diesel
Rated RPM diesel:2400
Bore/Stroke diesel:3.875x5.0625 inches (98 x 129 mm)
Displacement diesel:360 ci (5.9 L)
Starter volts diesel:12
International Harvester D360 diesel:-
International Harvester C291 gasoline:-

Hydraulics

Type:open center
Pump flow:12 gpm (45.4 lpm)

Mechanical

Drive:Two-wheel drive
Brakes:Hydraulic dry disc brakes
Steering:Power steering
Operator station:Open operator station. Cab optional.

Production

Type:Row-Crop tractor
Series:66 Series
Built in:Rock Island, Illinois, USA
Total built:10,799
Original price:$13,400 in 1976
Years produced:1971 - 1976

Transmission

Gear transmission

Type:gear
Gears:8 forward and 4 reverse
Notes:Four gears (1-4) in low and high ranges.
Clutch:dry disc
Transmission options:8-speed gear, 16-speed two-speed power shift

Torque Amplifier transmission

Type:two-speed power shift
Gears:16 forward and 8 reverse
Notes:Four gears (1-4) in two ranges (low/high) with the Torque Amplifier (TA) power shift. The TA allows a shift-on-the-move between direct drive and a lower speed.
Clutch:dry disc

Tractor hitch

Rear Type:2

Serial Numbers

1971:7101
1972:7416
1973:9611
1974:12378
1975:14630
1976:16840

Dimensions & Tires

Width:98 inches (248 cm)
Length:165 inches (419 cm)
Rear tire:18.4-34
Wheelbase:105 inches (266 cm)
Front tire:9.5L-15
Rear tread:56 to 100 inches (142 to 254 cm)
Front tread:60 to 84 inches (152 to 213 cm)
Ballasted weight:11,880 lbs (5388 kg)
Height (exhaust):105 inches (266 cm)
Operating weight:10,300 lbs (4672 kg)
Clearance (drawbar):14 inches (35 cm)

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:540/1000

Serial Number Location

Location:Left side of clutch housing

Related Models

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