International Harvester 966

International Harvester 966 Row-Crop tractor Technical Specifications

International Harvester 966 is a Row-Crop tractor that was produced by the John Deere between 1971 – 1976.

Below you will find detailed technical specifications for International Harvester 966 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

International Harvester 966 Production

Manufacturer: International Harvester
Type: Row-Crop tractor
Total built: 21,017
Original price: $18,000 (1976 )

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

International Harvester 966 Electrical

Charging amps: 32
Batteries: 2
Battery volts: 6
Battery AH: 172

International Harvester 966 Mechanical

Chassis: 4×2 2WD
  4×4 MFWD 4WD
Steering: power
Brakes: Independent hydraulic dry disc
Cab: Cab optional with heat and air-conditioning.
Transmissions: 8-speed sliding gear
  16-speed two-speed power shift


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


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: 24 gpm
90.8 lpm
Steering flow: 9 gpm
34.1 lpm
Steering press.: 1550 psi
106.9 bar

Tracktor Hitch

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

Power Take-off (PTO)

Rear PTO: independent
Rear RPM: 540/1000

Title serial numbers

Location: Clutch housing, left side
1971: 7101
1972: 11815
1973: 17794
1974: 22526
1975: 28119
1976: 31772

how to read serial numbers…

What year is my International Harvester 966? Serial Number Decoder

The serial number list shows the first tractor built in each year. The other tractors for that year will have successively higher numbers. Your serial number should be between two of the stated numbers.

The list only includes the numbers of the first tractors produced in each year. Your serial should be somewhere between two numbers.Unless you happen to be the first person to own a tractor, your number will not appear on the list.

International Harvester 966 Engine detail

Engine Detail
International Harvester D414
Displacement: 414 ci
6.8 L
Bore/Stroke: 4.30×4.75 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

International Harvester 966 Transmission overview

Engine Oil

Type: sliding gear
Gears: 8 forward and 4 reverse
Oil capacity: 90 qts
85.2 L
Four gears each provided in high, low, and reverse ranges.

International Harvester 966 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
5042 kg (gear)
  11,700 lbs
5307 kg (hydro)
Ballasted: 13,500 lbs
6123 kg

International Harvester 966 Tests

Nebraska Tractor Test 1082

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

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

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.


Is International Harvester 966 a good tractor?

The International Harvester 966 is one of the great tractors in the International Harvester stable, and it has earned International Harvester a fantastic reputation.

How much oil does a International Harvester 966 take?

Check out the International Harvester 966 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year International Harvester made the 966?

The International Harvester 966 was an agricultural tractor model made from 1971 – 1976

Where is the serial number on a International Harvester 966?

Lookup clutch housing, left side

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