International Harvester

International Harvester 966

The International Harvester 966 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 21,017 units. The tractor features a 6.8L 6-cylinder diesel engine producing 91 hp, with options for 8-speed gear, 16-speed two-speed power shift, and hydrostatic transmissions. It offers two- or four-wheel drive, power steering, and optional cab with heat and air-conditioning. The 966 has a wheelbase of 105 inches, weighs between 11,116 and 11,700 pounds depending on transmission, and uses 9.5L-15 front and 18.4-34 rear tires. It includes an IH Fast Hitch and independent rear PTO with 540/1000 rpm options.

Power91 hp

Founded1971 - 1976

Model966

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Technical Specifications

Detailed specifications and technical data for International Harvester 966

Power

Engine	91 hp (67.9 kW)
PTO (tested)	100.80 hp (75.2 kW)
PTO (claimed)	95 hp (70.8 kW)
Drawbar (tested)	85.21 hp (63.5 kW)
Drawbar (claimed)	84 hp (62.6 kW)

Tires

Rear tire	18.4-34
Front tire	9.5L-15

Engine

Type	diesel
Model	International Harvester D414
Power	91 hp (67.9 kW)
Cooling	liquid-cooled
Cylinders	6-cylinder
Rated RPM	2400 (early), 2600 (late)
Air cleaner	dual dry elements
Bore/Stroke	4.30x4.75 inches (109 x 121 mm)
Displacement	414 ci (6.8 L)
Firing order	1-5-3-6-2-4
Oil capacity	12 qts (11.4 L)
Coolant capacity	24 qts (22.7 L)

Weight

Ballasted	13,500 lbs (6123 kg)
Operating	11,116 lbs (gear) (5042 kg), 11,700 lbs (hydro) (5307 kg)

Capacity

Fuel	37 gal (140.0 L)
Hydraulic system	22.5 gal (85.2 L)

Variants

Hi-Clear	high-crop model

Dimensions

Width	98 inches (248 cm)
Length	165 inches (419 cm)
Wheelbase	105 inches (266 cm)
Ground clearance	14 inches (35 cm)
Height (exhaust)	105 inches (266 cm)

Electrical

Batteries	2
Battery AH	172
Battery volts	6
Charging amps	32

Hydraulics

Type	open center
Valves	1 to 4
Capacity	22.5 gal (85.2 L)
Pressure	2000 psi (137.9 bar)
Pump flow	12 gpm (45.4 lpm)
Total flow	21 gpm (79.5 lpm)
Steering flow	9 gpm (34.1 lpm)
Steering pressure	1550 psi (106.9 bar)

Mechanical

Cab	optional with heat and air-conditioning
Drive	Two- or four-wheel drive
Brakes	Independent hydraulic dry disc brakes
Power steering	Yes

Production

Type	Row-Crop tractor
Series	66 Series
Built in	Rock Island, Illinois, USA
Total built	21,017
Original price	$18,000 in 1976
Years produced	1971 - 1976

Transmission

Options	8-speed gear, 16-speed two-speed power shift, hydrostatic
Hydrostatic	Typehydrostatic Gearsinfinite forward and reverse NotesThe hydrostatic transmission option ended in 1973 when the Hydro 100 began production.
Torque Amplifier	Typetwo-speed power shift Gears16 forward and 8 reverse NotesThe Torque Amplifier (TA) provides a shift-on-the-move underdrive to the standard transmission. In any gear and range, the transmission can be shifted from direct drive (DD) to the slower TA speed by simply pulling the TA lever back. No clutching or stopping is needed. Clutchdry disc
Gear transmission	Typegear Gears8 forward and 4 reverse NotesFour gears each provided in high, low, and reverse ranges. Clutchdry disc Oil capacity90 qts (85.2 L)