International Harvester 1568
Power
172 hp
Production
1974-1976
Engine
Diesel, 8-cylinder
Transmission
Torque Amplifier
Weight
12,960 lbs [5878 kg]
Drive
2WD
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Introduction
International Harvester 1568: Heavy-Duty Row-Crop Tractor
The International Harvester 1568 is a row-crop tractor produced between 1974 and 1976 in Rock Island, Illinois. Distinguished by its V-8 engine configuration, this model was designed to handle demanding agricultural field operations during the mid-1970s.
Engine and Performance
The tractor is powered by the International DV-550, a 9.0-liter, 8-cylinder liquid-cooled diesel engine. It delivers a gross power output of 172 hp at a rated speed of 2600 RPM. The engine utilizes a two-stage dry air cleaner with an unloader and maintains a compression ratio of 16.6:1.
Transmission and Drivetrain
The 1568 features a Torque Amplifier transmission, which incorporates a two-speed power shift system. This setup provides a total of 12 forward and 6 reverse gears, allowing the operator to adjust speed and torque under load. The machine is configured as a two-wheel-drive unit with planetary final drives.
Hydraulics and PTO
The hydraulic system is of the open-center type, providing a total flow of 21 gpm, with 12 gpm dedicated to pump flow. It includes rear valves and optional front valves for implement control. The independent rear PTO operates at 1000 RPM, achieved at an engine speed of 2300 RPM, utilizing a 1.375-inch shaft.
Dimensions and Operator Environment
With a wheelbase of 105 inches and a base weight of 12,960 lbs, the tractor is built for heavy-duty stability. The cabin comes standard with air-conditioning to support operator productivity. The rear tread width is adjustable from 66 to 120 inches, while the front tread ranges from 52 to 86 inches, depending on the configuration.
Conclusion
The International Harvester 1568 is a robust, high-horsepower row-crop machine. Its combination of a V-8 diesel engine, significant weight, and specialized torque-amplifying transmission makes it suitable for large-scale field work and heavy implement operation.
Production Information of International Harvester, 1568
- Original price was $26,980 in 1976
- Row-Crop tractor
- The 1568 was a 1566 with a International V8 truck engine.
- Built in Rock Island, Illinois, USA
| Manufacturer | International Harvester |
|---|---|
| Total built | 862 |
Dimension and Tires Information of International Harvester, 1568
| Front tread | 52 to 86 inches [132 to 218 cm] |
|---|---|
| Wheelbase | 105 inches [266 cm] |
| Weight | 12,960 lbs [5878 kg] |
| Height (exhaust) | 128 inches [325 cm] |
| Length | 168 inches [426 cm] |
| Front tread | 56 to 80 inches [142 to 203 cm] |
| Clearance (drawbar) | 17 inches [43 cm] |
| Height (cab) | 117 inches [297 cm] |
| Rear tread | 66 to 120 inches [167 to 304 cm] |
| Ag front | 11L-15 |
|---|---|
| Ag rear | 20.8-38 |
Engine Specifications of International Harvester, 1568
- International DV-550
- Liquid-cooled V-8
- 8-cylinder
- Diesel
| Air cleaner | Two-stage dry with unloader |
|---|---|
| Idle RPM | 900-2600 |
| Displacement | 548.7 ci [9.0 L] |
| Bore/Stroke | 4.312x4.50 inches [110 x 114 mm] |
| Power (gross) | 172 hp [128.3 kW] |
| Rated RPM | 2600 |
| Compression | 16.6:1 |
| Coolant capacity | 30 qts [28.4 L] |
| Oil capacity | 16 qts [15.1 L] |
| Starter volts | 12 |
Transmission Information of International Harvester, 1568
Transmission variants 1
| Transmission | Torque Amplifier |
|---|---|
| Type | Two-speed power shift |
| Gears | 12 forward and 6 reverse |
Mechanical Specs of International Harvester, 1568
- Two-wheel drive
- Cab standard with air-conditioning.
- Hydraulic wet disc brakes
- Power steering
| Final drives | Planetary |
|---|
Power Information of International Harvester, 1568
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 (1.375) |
| Engine RPM | 1000@2300 |
Hydraulics Specifications of International Harvester, 1568
| Type | Open center |
|---|---|
| Total flow | 21 gpm [79.5 lpm] |
| Pump flow | 12 gpm [45.4 lpm] |
| Rear valves | 1 or 2 |
| Front valves(optional) | 2 |
Three-Point Hitch of International Harvester, 1568
| Rear Type | III/II |
|---|---|
| Control | Draft control |
Electrical System of International Harvester, 1568
| Charging system | Alternator |
|---|---|
| Battery volts | 6 |
Where it sits
With 172 HP, the International Harvester 1568 sits just below 1566 (183 HP) in International Harvester's range. Its power puts it in the 86th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 1568 have?
The International Harvester 1568 delivers 172 HP.
What years was the International Harvester 1568 produced?
The International Harvester 1568 was produced in 1974-1976.
What engine does the International Harvester 1568 have?
The International Harvester 1568 is powered by a Diesel, 8-cylinder engine.
What transmission does the International Harvester 1568 use?
The International Harvester 1568 uses a Torque Amplifier transmission.
How much does the International Harvester 1568 weigh?
The International Harvester 1568 weighs 12,960 lbs [5878 kg].
Is the International Harvester 1568 4WD?
The International Harvester 1568 is available in 2WD.