| Manufacturer |
International Harvester |
| Price |
18,000(USD) |
| Model |
966 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
|
VARIANTS
NEBRASKA TRACTOR TEST 1082 2
| Description |
2400rpm diesel gear TA 2WD October 5 - 19, 1971 Link: Nebraska Tractor Test 1082 file PTO performance Drawbar performance Gear 1-Hi-TA used for power test Gear 3-Lo-TA used for pull test |
| Power at rated engine speed |
96.04hp / 71.6kW |
| Fuel use |
6.4gal/hour / 24.2l/hour |
| Power at rated PTO speed |
93.5hp / 69.7kW |
| Max power |
80.4hp / 60.0kW |
| Max pull |
10,041lbs / 4554kg |
NEBRASKA TRACTOR TEST 1095 2
| Description |
Diesel hydrostatic 2WD April 28 - May 12, 1972 Link: Nebraska Tractor Test 1095 file PTO performance Drawbar performance Gear 5.4 MPH used for power test Gear 2.77 MPH used for pull test |
| Power at rated engine speed |
91.38hp / 68.1kW |
| Fuel use |
7.1gal/hour / 26.9l/hour |
| Power at rated PTO speed |
88.29hp / 65.8kW |
| Max power |
68.08hp / 50.8kW |
| Max pull |
8,909lbs / 4041kg |
NEBRASKA TRACTOR TEST 1123 2
| Description |
2600rpm diesel gear TA 2WD April 20 - May 17, 1973 Link: Nebraska Tractor Test 1123 file PTO performance Drawbar performance Gear 1-Hi-TA used for power test Gear 3-Lo-TA used for pull test |
| Power at rated engine speed |
100.80hp / 75.2kW |
| Fuel use |
6.9gal/hour / 26.1l/hour |
| Power at rated PTO speed |
101.52hp / 75.7kW |
| Max power |
85.21hp / 63.5kW |
| Max pull |
10,036lbs / 4552kg |
INTERNATIONAL HARVESTER 966 POWER
| Engine |
91hp / 67.9kW |
| Drawbar (claimed) |
84hp / 62.6kW |
| PTO (claimed) |
95hp / 70.8kW |
| Drawbar (tested) |
85.21hp / 63.5kW |
| PTO (tested) |
100.80hp / 75.2kW |
ENGINE DETAIL
The International Harvester 966 features a robust D414 diesel engine with a displacement of 414ci (6.8L) that delivers 91hp at rated RPMs of 2400 (early)/2600 (late), making it effective for heavy-duty agricultural tasks. Its dual dry element air cleaner allows for improved airflow and engine efficiency, while the substantial oil (12qts) and coolant (24qts) capacities enhance reliability and operational longevity. However, potential challenges include sourcing parts for older models and maintaining optimal engine performance, particularly as the RPM range is critical for various applications.
| Description |
International Harvester D414 diesel 6-cylinder liquid-cooled |
| Displacement |
414ci / 6.8L |
| Bore/Stroke |
4.30x4.75inches / 109x 121mm |
| Power |
91hp / 67.9kW |
| Air cleaner |
dual dry elements |
| Rated RPM |
2400 (early)/2600 (late) |
| Firing order |
1-5-3-6-2-4 |
| Oil capacity |
12qts / 11.4L |
| Coolant capacity |
24qts / 22.7L |
INTERNATIONAL HARVESTER 966 ENGINE
The International Harvester 966 is powered by a robust 6.8L 6-cylinder diesel engine, offering substantial torque and horsepower suitable for heavy-duty agricultural tasks. Its design includes a durable chassis and hydraulic system, enhancing both lifting capacity and implement compatibility. However, maintenance may require specialized knowledge due to potential parts scarcity, making it essential for operators to focus on regular service to maximize operational lifespan.
| Description |
International Harvester 6.8L 6-cyl diesel |
TRANSMISSIONS OVERVIEW
The International Harvester 966 tractor features an 8-speed sliding gear transmission alongside a 16-speed two-speed power shift hydrostatic system, providing smooth and efficient transitions between gears for enhanced productivity. The hydrostatic option allows for precise speed control, making it ideal for tasks requiring fine maneuverability, such as row crop cultivation or loader work. However, challenges may arise in maintenance, as hydrostatic systems can be more complex and costly to repair compared to traditional transmissions.
| Description |
8-speed sliding gear 16-speed two-speed power shift hydrostatic |
TRANSMISSION 1
The International Harvester 966 tractor features a sliding gear transmission with a total of 8 forward and 4 reverse gears, enabling versatile operation for various agricultural tasks. Its high, low, and reverse ranges enhance performance while navigating diverse terrains, making it suitable for both fieldwork and transport scenarios. However, the relatively low oil capacity of 90 quarts (85.2L) may necessitate more frequent maintenance checks to ensure optimal lubrication and performance.
| Type |
sliding gear |
| Gears |
8 forward and 4 reverse |
| Oil capacity |
90qts / 85.2L |
| Description |
Four gears each provided in high, low, and reverse ranges |
SPEEDS 1
| Description |
With 18.4-34 rear tires |
TRANSMISSION 2
The International Harvester 966 features a two-speed power shift transmission with 16 forward and 8 reverse gears, providing significant flexibility in various field conditions. The integrated Torque Amplifier (TA) allows for seamless gear shifting under load, enhancing operational efficiency without the need for clutch engagement, which is advantageous for productivity during intensive tasks. However, reliance on hydraulic systems for the TA can introduce potential maintenance challenges, particularly if hydraulic fluid levels are not consistently monitored.
| Transmission |
Torque Amplifier |
| Type |
two-speed power shift |
| Gears |
16 forward and 8 reverse |
| Description |
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 |
SPEEDS 2
| Description |
With 18.4-34 rear tires |
TRANSMISSION 3
The International Harvester 966 tractor features an infinite hydrostatic transmission that allows for smooth and adjustable speed control in both forward and reverse, leveraging efficient power transfer for various applications. This system enhances operator comfort and precision, particularly in tasks requiring gradual movements, such as planting or grading. However, the discontinuation of hydrostatic options after 1973 may pose challenges for parts availability and maintenance as demand for this specific configuration decreases.
| Type |
hydrostatic |
| Gears |
infinite forward and reverse |
| Description |
The hydrostatic transmission option ended in 1973 when the Hydro 100 began production |
MECHANICAL
The International Harvester 966 features a versatile 2WD/4WD chassis, offering flexibility for different terrain conditions; however, 2WD may limit traction on challenging surfaces. Its independent hydraulic dry disc brakes enhance stopping performance, critical for safety during heavy load operations. The availability of both manual and power shift transmission options provides operators with choices between direct control and efficiency, catering to diverse applications and user preferences.
| Chassis |
4x2 2WD/4x4 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 hydrostatic |
CAPACITY
| Fuel |
37gal / 140.0L |
| Hydraulic system |
22.5gal / 85.2L |
HYDRAULICS
| Type |
open center |
| Capacity |
22.5gal / 85.2L |
| Pressure |
2000psi / 137.9bar |
| Valves |
1 to 4 |
| Pump flow |
12gpm / 45.4lpm |
| Total flow |
24gpm / 90.8lpm |
| Steering flow |
9 gpm /34.1 lpm |
| Steering press. |
1550psi / 106.9bar |
TRACTOR HITCH
| Rear Type |
II |
| Rear lift (at 24 |
4400lbs / 1995kg |
| Type |
IH Fast Hitch |
| Rear lift |
5000lbs / 2268kg (at 24 inches) |
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
540/1000 |
INTERNATIONAL HARVESTER 966 TIRES
The International Harvester 966 tractor, equipped with 9.5L-15 agricultural front tires and 18.4-34 rear tires, offers optimal traction and stability for heavy tillage and fieldwork. The larger rear tires enhance weight distribution and improve ground contact, beneficial for operating in diverse soil conditions. However, the tractor's size may challenge maneuverability in smaller fields, making it less ideal for compact farming operations.
| Ag front |
9.5L-15 |
| Ag rear |
18.4-34 |
DIMENSIONS
| Wheelbase |
105inches / 266cm |
| Length |
165inches / 419cm |
| Width |
98inches / 248cm |
| Height (exhaust) |
105inches / 266cm |
| Ground clearance |
14inches / 35cm |
INTERNATIONAL HARVESTER 966 WEIGHT
| Operating |
11,116lbs / 5042kg (gear) 11,700lbs / 5307kg (hydro) |
| Ballasted |
13,500lbs / 6123kg |
DIMENSIONS & TIRES
The International Harvester 966, with a wheelbase of 105 inches, offers excellent stability and maneuverability, which is ideal for medium to large-scale farming operations. Weighing between 11,116 and 11,700 pounds, it provides a substantial ground presence, enhancing traction and ensuring efficient power transfer during heavy-duty tasks. The front 9.5L-15 and rear 18.4-34 tire sizes allow for effective weight distribution, but frequent tire maintenance may be necessary to prevent wear under heavy loads.
| Wheelbase |
105inches / 266cm |
| Weight |
11116 to 11700 pounds |
| Front tire |
9.5L-15 |
| Rear tire |
18.4-34 |
966 SERIAL NUMBERS
| Location |
Clutch housing, left side |
| 1971 |
7101 |
| 1972 |
11815 |
| 1973 |
17794 |
| 1974 |
22526 |
| 1975 |
28119 |
| 1976 |
31772 |
ELECTRICAL
| Charging amps |
32 |
| Batteries |
2 |
| Battery volts |
6 |
| Battery AH |
172 |
