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Farmall 966

Farmall 966 tractor
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The Farmall 966 is a row-crop tractor produced from 1971 to 1976 as part of the 66 Series by Farmall, a division of International Harvester. Built in Rock Island, Illinois, USA, a total of 21,017 units were made. It features an International Harvester 6.8L 6-cylinder liquid-cooled diesel engine producing 91 hp. Transmission options include an 8-speed gear, a 16-speed two-speed power shift with Torque Amplifier, and a hydrostatic transmission (discontinued in 1973). The tractor offers two- or four-wheel drive, power steering, and optional cab with heat and air-conditioning. It has a rear independent PTO with 540/1000 rpm options and an IH Fast Hitch rear hitch. The Farmall 966 is known for its robust build and versatility in row-crop farming.
Farmall 966International Harvester 966row-crop tractor6.8L diesel engine91 hp66 Seriestractor specifications
Power91 hp
Founded1971 - 1976
Model966

Technical Specifications

Detailed specifications and technical data for Farmall 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)

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 (gear):11,116 lbs (5042 kg)
Operating (hydro):11,700 lbs (5307 kg)

Capacity

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

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
Steering:Power steering

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
Gear clutch:dry disc
Gear details:Four gears each provided in high, low, and reverse ranges.
Gear oil capacity:90 qts (85.2 L)
Gear transmission:8 forward and 4 reverse
Hydrostatic notes:Option ended in 1973 when the Hydro 100 began production.
Torque Amplifier gears:16 forward and 8 reverse
Torque Amplifier clutch:dry disc
Hydrostatic transmission:infinite forward and reverse
Torque Amplifier details:Provides shift-on-the-move underdrive to the standard transmission without clutching or stopping.
Torque Amplifier transmission:two-speed power shift

Tractor hitch

Type:IH Fast Hitch
Rear Type:II
Rear lift:5000 lbs (at 24 inches) (2268 kg)
Rear lift (at 24"/610mm):4400 lbs (1995 kg)

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
Ground clearance:14 inches (35 cm)
Height (exhaust):105 inches (266 cm)

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:540/1000

Related Models

Farmall 766

Model:766

Farmall Hydro 100

Model:Hydro 100