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International Harvester 966

The International Harvester 966 is a tractor produced by International Harvester. It is equipped with a 414 ci 6.8 L engine. The rated power output is 91 hp 67.9 kW. Transmission: Torque Amplifier. Operating weight: 11116 to 11700 pounds.

Engine Power
91 hp 67.9 kW
Fuel & Capacities
37 gal 140.0 L
Transmission
Torque Amplifier
Operating Weight
11116 to 11700 pounds

International Harvester 966 Serial Number & Year Decoder

Find the exact manufacture year of your tractor by checking your chassis serial number below.

Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.

Overview

International Harvester 966 tractor photo
1971 - 1976 66 SeriesRow-Crop tractor
1971 - 1976
66 Series
Row-Crop tractor
Production
Manufacturer
International Harvester
Row-Crop tractor
Built in Rock Island, Illinois, USA
Total built
21,017
Original price was $18,000 in 1976
Variants
Hi-Clear
high-crop model
International Harvester 966 Engine
International Harvester 6.8L 6-cyl diesel
Engine details ...
International Harvester 966 Power
Engine
91 hp 67.9 kW
Drawbar (claimed)
84 hp 62.6 kW
PTO (claimed)
95 hp 70.8 kW
Drawbar (tested)
85.21 hp 63.5 kW
PTO (tested)
100.80 hp 75.2 kW
Performance test details ...
Mechanical
Two- or four-wheel drive
Power steering
Independent hydraulic dry disc brakes
Cab optional with heat and air-conditioning.
Capacity
Fuel
37 gal 140.0 L
Hydraulic system
22.5 gal 85.2 L
Hydraulics
Type
open center
Capacity
22.5 gal 85.2 L
Pressure
2000 psi 137.9 bar
Valves
1 to 4
Pump flow
12 gpm 45.4 lpm
Total flow
21 gpm 79.5 lpm
Steering flow
9 gpm 34.1 lpm
Steering press.
1550 psi 106.9 bar
Tractor hitch
Rear Type
II
Rear lift (at 24"/610mm)
4400 lbs 1995 kg
Type
IH Fast Hitch
Rear lift
5000 lbs (at 24 inches) 2268 kg
Power Take-off (PTO)
Rear PTO
independent
Rear PTO Type
540/1000
Dimensions & Tires
Wheelbase
105 inches 266 cm
Weight
11116 to 11700 pounds
Front tire
9.5L-15
Rear tire
18.4-34
Full dimensions and tires ...
Electrical
Charging amps
32
Batteries
2
Battery volts
6
Battery AH
172
References
966 references literature
766, 966, 1066 and 1466 Tractors published in 1972, by International Harvester
766, 966, 1066 and 1466 Tractors published in 1973, by International Harvester
27PS-115PS published in 1975, by International Harvester

Engine

Engine Detail — 414 ci / 6.8 L Diesel

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

Transmission

Transmission options
8-speed gear
16-speed two-speed power shift
hydrostatic

Transmission — 8 forward and 4 reverse gear

Type
gear
Gears
8 forward and 4 reverse
Clutch
dry disc
Oil capacity
90 qts 85.2 L
Four gears each provided in high, low, and reverse ranges.
With 18.4-34 rear tires.
966 gear speeds

Transmission — Torque Amplifier

Transmission
Torque Amplifier
Type
two-speed power shift
Gears
16 forward and 8 reverse
Clutch
dry disc
The 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.
With 18.4-34 rear tires.
966 Torque Amplifier two-speed power shift speeds

Transmission — infinite forward and reverse hydrostatic

Type
hydrostatic
Gears
infinite forward and reverse
The hydrostatic transmission option ended in 1973 when the Hydro 100 began production.
966 hydrostatic speeds

Dimensions

International Harvester 966 Tires
Ag front
9.5L-15
Ag rear
18.4-34
Dimensions
Wheelbase
105 inches 266 cm
Length
165 inches 419 cm
Width
98 inches 248 cm
Height (exhaust)
105 inches 266 cm
Ground clearance
14 inches 35 cm
International Harvester 966 Weight
Operating
11,116 lbs (gear) 5042 kg
11,700 lbs (hydro) 5307 kg
Ballasted
13,500 lbs 6123 kg

Tests

Tractor Tests
NTTL 1082: 2400rpm diesel gear/TA 2WD
NTTL 1095: diesel hydrostatic 2WD
NTTL 1123: 2600rpm diesel gear/TA 2WD
Nebraska Tractor Test 1082
2400rpm diesel gear/TA 2WD October 5 - 19, 1971 Link: Nebraska Tractor Test 1082 file
PTO performance
Power at rated engine speed
96.04 hp 71.6 kW
Fuel use
6.5 gal/hour 24.6 l/hour
Power at rated PTO speed
93.5 hp 69.7 kW
Fuel use
5.9 gal/hour 22.3 l/hour
Drawbar performance
Max power
80.4 hp 60.0 kW
Fuel use
6.4 gal/hour 24.2 l/hour
Gear 1-Hi-TA used for power test.
Max pull
10,041 lbs 4554 kg
Gear 3-Lo-TA used for pull test.
Nebraska Tractor Test 1095
Diesel hydrostatic 2WD April 28 - May 12, 1972 Link: Nebraska Tractor Test 1095 file
PTO performance
Power at rated engine speed
91.38 hp 68.1 kW
Fuel use
7.2 gal/hour 27.3 l/hour
Power at rated PTO speed
88.29 hp 65.8 kW
Fuel use
6.4 gal/hour 24.2 l/hour
Drawbar performance
Max power
68.08 hp 50.8 kW
Fuel use
7.1 gal/hour 26.9 l/hour
Gear 5.4 MPH used for power test.
Max pull
8,909 lbs 4041 kg
Gear 2.77 MPH used for pull test.
Nebraska Tractor Test 1123
2600rpm diesel gear/TA 2WD April 20 - May 17, 1973 Link: Nebraska Tractor Test 1123 file
PTO performance
Power at rated engine speed
100.80 hp 75.2 kW
Fuel use
6.9 gal/hour 26.1 l/hour
Power at rated PTO speed
101.52 hp 75.7 kW
Fuel use
6.5 gal/hour 24.6 l/hour
Drawbar performance
Max power
85.21 hp 63.5 kW
Fuel use
6.9 gal/hour 26.1 l/hour
Gear 1-Hi-TA used for power test.
Max pull
10,036 lbs 4552 kg
Gear 3-Lo-TA used for pull test.

Photos

International Harvester 966 tractor photo

International Harvester 966 tractor photo

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