International Harvester 1586
Power
177 hp[P] hp
Production
1976-1981
Engine
6-cylinder
Transmission
Torque Amplifier
Drive
2WD/4WD
From the same series:
Introduction
International Harvester 1586 Row-Crop Tractor
The International Harvester 1586 is a high-horsepower row-crop tractor produced between 1976 and 1981 in Rock Island, Illinois. As part of the 1586 series, it was designed to serve as a primary power unit for large-scale agricultural operations requiring significant traction and implement management.
Engine and Performance
The tractor is powered by a 7.1-liter (436 ci), 6-cylinder liquid-cooled engine. It operates at a rated speed of 2500 RPM and produces approximately 177 horsepower. The engine intake is protected by a dual dry-element air cleaner to ensure longevity in dusty field conditions.
Transmission and Drivetrain
The transmission system features a Torque Amplifier (TA) which acts as a two-speed power shift, allowing for on-the-fly high/low selection within each gear. It provides 12 forward and 6 reverse speeds across three ranges. Gear and range selection must be performed while the tractor is stationary, while the TA can be shifted under load.
Hydraulics and PTO
The hydraulic system utilizes an open-center design with a pump flow rate of 12 gpm (45.4 lpm) and a total reservoir capacity of 27 gallons (102.2 L). It is equipped with two valves to support various implements. The independent rear PTO operates at 1000 RPM at an engine speed of 2100 RPM, utilizing a 1.75-inch shaft.
Operator Environment and Mechanical Features
The 1586 was standard-equipped with an air-conditioned cab, though open-station versions with a four-post ROPS were also available. Steering is power-assisted, and braking is managed via hydraulic disc brakes. The tractor is configured with final planetary drives and is available in both two-wheel and four-wheel drive variants.
Conclusion
With a total of 13,636 units built, the International Harvester 1586 remains a staple for collectors and operators looking for a heavy-duty, mechanical-focused row-crop tractor suitable for demanding field work and high-power applications.
Production Information of International Harvester, 1586
- Original price was $43,300 in 1981
- Row-Crop tractor
- Built in Rock Island, Illinois, USA
| Manufacturer | International Harvester |
|---|---|
| Total built | 13,636 |
Dimension and Tires Information of International Harvester, 1586
| Wheelbase | 105 inches [266 cm] |
|---|---|
| Ground clearance | 14 inches [35 cm] |
| Height (cab) | 116 inches [294 cm] |
| Length | 169 inches [429 cm] |
| Width | 112 inches [284 cm] |
| Ag front | 11.00-16 |
|---|---|
| Ag rear | 20.8-38 |
Engine Specifications of International Harvester, 1586
- Liquid-cooled
- 6-cylinder
| Air cleaner | Dual dry element |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Oil capacity | 20 qts [18.9 L] |
| Rated RPM | 2500 |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Coolant capacity | 27 qts [25.6 L] |
Transmission Information of International Harvester, 1586
Transmission variants 1
- The transmission features three ranges (low, high, and reverse) with three gears (1-3) in each range. The Torque Amplifier (TA) provides an additional high/low selection for each speed. The range and gear can be shifted only when the tractor is stopped. The TA can be shifted while the tractor is in motion.
| Transmission | Torque Amplifier |
|---|---|
| Oil capacity | 108 qts [102.2 L] |
| Type | Two-speed power shift |
| Gears | 12 forward and 6 reverse |
Mechanical Specs of International Harvester, 1586
- Two- or four-wheel drive
- Cab standard with air-conditioning. Open operator station and four-post ROPS available.
- Hydraulic disc brakes
| Final drives | Planetary |
|---|---|
| Steering | Power assist |
Power Information of International Harvester, 1586
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 (1.75) |
| Engine RPM | 1000@2100 |
Hydraulics Specifications of International Harvester, 1586
| Type | Open center |
|---|---|
| Pump flow | 12 gpm [45.4 lpm] |
| Valves | 2 |
| Valves(optional) | Closed center |
| Capacity | 27 gal [102.2 L] |
Optional after late 1980.
Three-Point Hitch of International Harvester, 1586
| Rear Type | III |
|---|
Electrical System of International Harvester, 1586
| Battery volts | 12 |
|---|---|
| Ground | Negative |
| Batteries | 2 |
| Batteries(optional) | 61 (with cab) |
| Charging system | Alternator |
| Battery CCA | 470 |
| Charging amps | 42 |
Where it sits
With 177 hp[P] HP, the International Harvester 1586 sits between 1486 (162 HP) and 1566 (183 HP) in International Harvester's range. Its power puts it in the 87th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 1586 have?
The International Harvester 1586 delivers 177 hp[P] HP.
What years was the International Harvester 1586 produced?
The International Harvester 1586 was produced in 1976-1981.
What engine does the International Harvester 1586 have?
The International Harvester 1586 is powered by a 6-cylinder engine.
What transmission does the International Harvester 1586 use?
The International Harvester 1586 uses a Torque Amplifier transmission.
Is the International Harvester 1586 4WD?
The International Harvester 1586 is available in 2WD/4WD.