| Manufacturer |
Farmall |
| 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 |
FARMALL 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 Farmall 966 is powered by the robust International Harvester D414 diesel engine, providing 91hp at a rated RPM of either 2400 or 2600, depending on the model. Its 414ci displacement and dual dry air cleaner system enhance engine efficiency while the 12qt oil and 24qt coolant capacities support prolonged operation with effective thermal regulation. A notable advantage is its firing order of 1-5-3-6-2-4, which contributes to smoother engine performance, though operators should be mindful of maintenance to prevent potential vibration issues.
| Description |
International Harvester D414 diesel 6-cylinder liquid-cooled |
| Displacement |
414ci / 6.8L |
| Bore/Stroke |
4.30x4.75inches / 109x 121 mm |
| 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 |
FARMALL 966 ENGINE
The Farmall 966, featuring a robust 6.8L 6-cylinder diesel engine, offers substantial torque and efficient power delivery, making it suitable for heavy-duty farming tasks. Its 24-speed transmission allows for versatile speed adjustment, which enhances operational efficiency across varied field conditions. However, its weight and size may present challenges in maneuverability in tighter spaces, so optimal application would be in larger, open fields.
| Description |
International Harvester 6.8L 6-cyl diesel |
TRANSMISSIONS OVERVIEW
The Farmall 966 features an 8-speed sliding gear transmission combined with a 16-speed two-speed power shift hydrostatic system, offering versatility in speed selection for various farming tasks. The hydrostatic drive provides smooth engagement and precise control, enhancing operational efficiency while reducing mechanical wear. However, the complexity of the transmission system may present challenges in maintenance and repair, requiring skilled technicians for optimal performance.
| Description |
8-speed sliding gear 16-speed two-speed power shift hydrostatic |
TRANSMISSION 1
The Farmall 966 tractor features a sliding gear transmission with 8 forward and 4 reverse gears, allowing for versatile speed and torque management across various terrains. Its oil capacity of 90 quarts (85.2 liters) ensures adequate lubrication, enhancing the transmission's durability under heavy loads. Challenges include potential gear wear in high-load conditions; regular maintenance of the oil levels is crucial to prevent premature failure.
| 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 Farmall 966 features a two-speed power shift transmission with a Torque Amplifier, allowing seamless shifting from direct drive to underdrive without clutching, which enhances operational efficiency during varied field tasks. With 16 forward and 8 reverse gears, it offers excellent adaptability for different working conditions, such as towing or plowing. However, the complexity of the TA system may require careful maintenance to prevent operational issues in high-stress scenarios.
| 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 Farmall 966 features a hydrostatic transmission, allowing for infinite speed control in both forward and reverse, which enhances maneuverability in various farming tasks. However, the hydrostatic option was discontinued after 1973, meaning parts and service may be less accessible for maintenance and repairs. This setup is advantageous for operators requiring precise speed adjustments, but it may also pose a challenge in sourcing support as technology evolved with the introduction of the Hydro 100.
| Type |
hydrostatic |
| Gears |
infinite forward and reverse |
| Description |
The hydrostatic transmission option ended in 1973 when the Hydro 100 began production. |
MECHANICAL
The Farmall 966 tractor's 4x2 and 4WD configurations provide versatility for various agricultural applications, with the 4x4 MFWD option enhancing traction on rugged terrain. The independent hydraulic dry disc brakes and power steering improve safety and maneuverability, making it suitable for both fieldwork and loader applications. The optional climate-controlled cab increases operator comfort during extended use, though the choice of transmission affects operational complexity and efficiency; hydrostatic offers ease of use, while the sliding gear and power shift provide more control for specific tasks.
| 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 |
FARMALL 966 TIRES
The Farmall 966 features a robust tire configuration with 9.5L-15 ag front tires and 18.4-34 ag rear tires, optimizing traction and stability for heavy-duty agricultural tasks. The larger rear tire size enhances load-bearing capacity and provides improved flotation in various soil conditions, making it suitable for diverse farming applications. However, the wider rear tires may present challenges in tight field maneuvers or narrow spaces.
| 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 |
FARMALL 966 WEIGHT
| Operating |
11,116lbs / 5042kg (gear)/11,700lbs / 5307kg (hydro) |
| Ballasted |
13,500lbs / 6123kg |
DIMENSIONS & TIRES
The Farmall 966 tractor features a wheelbase of 105 inches, promoting stability during field operations. Its weight range of 11,116 to 11,700 pounds provides robust traction, making it suitable for heavy-duty farming tasks. The front tire size of 9.5L-15 and rear tire size of 18.4-34 enhances the tractor's ability to navigate diverse terrains but may limit maneuverability in tight spaces.
| 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 |
