Farmall 1566
Power
183 hp
Production
1974-1976
Engine
Turbocharged diesel, 6-cylinder
Transmission
Torque Amplifier
Drive
2WD
From the same series:
Introduction
International Harvester 1566 Row-Crop Tractor
The International Harvester 1566 is a row-crop tractor produced by Farmall in Rock Island, Illinois, between 1974 and 1976. As part of the 1468 series, this two-wheel drive machine was designed for large-scale agricultural operations requiring high power output.
Engine and Performance
The tractor is powered by the International Harvester DT-436, a 7.1-liter, 6-cylinder turbocharged diesel engine. It produces a rated power of 183 hp (136.5 kW) at 2600 engine RPM. The cooling system has a capacity of 24.6 liters, while the engine oil capacity is 18.9 liters.
Transmission and Drivetrain
The 1566 utilizes a Torque Amplifier transmission featuring a two-speed power shift. This configuration provides a total of 12 forward gears and 6 reverse gears, allowing the operator to adjust speed and torque to field conditions without stopping. Final drives are of the planetary type.
Hydraulics and PTO
The hydraulic system is an open-center design with a pump flow rate of 12 gpm (45.4 lpm). The tractor features an independent rear PTO operating at 1000 RPM at 2300 engine RPM. Optional valves are available for both front and rear hydraulic requirements.
Dimensions and Operator Station
Built on a 105-inch wheelbase, the tractor has an overall length of 168 inches. The rear tread is adjustable from 66 to 120 inches to accommodate various row spacings. The operator station comes standard as an open platform, with an air-conditioned cab available as an option. Braking is handled by hydraulic wet disc brakes, and the steering is power-assisted.
Conclusion
With a total production of 7,417 units, the International Harvester 1566 remains a significant model from the mid-1970s. Its combination of a high-horsepower turbocharged engine and a flexible transmission makes it suitable for heavy-duty traction and row-crop applications.
Production Information of Farmall, 1566
- Original price was $26,250 in 1976
- Row-Crop tractor
- Built in Rock Island, Illinois, USA
| Manufacturer | Farmall (a part of International Harvester) |
|---|---|
| Total built | 7,417 |
Dimension and Tires Information of Farmall, 1566
| Front tread | 62 to 86 inches [157 to 218 cm] |
|---|---|
| Wheelbase | 105 inches [266 cm] |
| Height (exhaust) | 125 inches [317 cm] |
| Height (cab) | 117 inches [297 cm] |
| Length | 168 inches [426 cm] |
| Front tread | 56 to 80 inches [142 to 203 cm (optional)] |
| Clearance (drawbar) | 17 inches [43 cm] |
| Width | 112 inches [284 cm] |
| Rear tread | 66 to 120 inches [167 to 304 cm] |
Width over axle ends.
| Ag front | 11L-15 |
|---|---|
| Ag rear | 20.8-38 |
Engine Specifications of Farmall, 1566
- International Harvester DT-436
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Oil capacity | 20 qts [18.9 L] |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Compression | 16:1 |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Coolant capacity | 26 qts [24.6 L] |
| Idle RPM | 900-2600 |
| Rated RPM | 2600 |
| Power | 183 hp [136.5 kW] |
Transmission Information of Farmall, 1566
Transmission variants 1
| Transmission | Torque Amplifier |
|---|---|
| Type | Two-speed power shift |
| Gears | 12 forward and 6 reverse |
Mechanical Specs of Farmall, 1566
- Two-wheel drive
- Open operator station. Cab available with air-conditioning.
- Hydraulic wet disc brakes
- Power steering
| Final drives | Planetary |
|---|
Power Information of Farmall, 1566
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
| Engine RPM | 1000@2300 |
Hydraulics Specifications of Farmall, 1566
| Type | Open center |
|---|---|
| Pump flow | 12 gpm [45.4 lpm] |
| Rear valves(optional) | 2 |
| Front valves(optional) | 2 |
Three-Point Hitch of Farmall, 1566
| Rear Type | III/II |
|---|---|
| Control | Lower-link draft sensing |
Electrical System of Farmall, 1566
| Charging system | Alternator |
|---|
Where it sits
With 183 HP, the Farmall 1566 sits just above 1468 (147 HP) in Farmall's range. Its power puts it in the 88th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Farmall 1566 have?
The Farmall 1566 delivers 183 HP.
What years was the Farmall 1566 produced?
The Farmall 1566 was produced in 1974-1976.
What engine does the Farmall 1566 have?
The Farmall 1566 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the Farmall 1566 use?
The Farmall 1566 uses a Torque Amplifier transmission.
Is the Farmall 1566 4WD?
The Farmall 1566 is available in 2WD.