International Harvester 1586

Name: International Harvester 1586
Brand: International Harvester

Power

177 hp[P] hp

Production

1976-1981

Engine

6-cylinder

Transmission

Torque Amplifier

Drive

2WD/4WD

140–200 HP 1970s 1980s

From the same series:

1486

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."

Introduction

Production Information of International Harvester, 1586

The production information of the tractor (1586) includes details about its manufacturing.

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

This section sums up the dimension and tires information of the tractor.


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

Get the specifications for the engine and if different options are available.

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, 1586Y

Discover all variants of transmission available for this tractor model.

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, 1586Y

This section summarizes all mechanical information such as the brake system and other specifications.

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, 1586Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Independent
Rear PTO Type	1000 (1.75)
Engine RPM	1000@2100

Hydraulics Specifications of International Harvester, 1586

Hydraulic system type, pressure, pump flow and valves.


Type	Open center
Pump flow	12 gpm [45.4 lpm]
Valves	2
	Closed center *Optional after late 1980.
Capacity	27 gal [102.2 L]

Three-Point Hitch of International Harvester, 1586

Hitch category and rear/front lift capacity.


Rear Type	III

Electrical System of International Harvester, 1586

Battery voltage, charging system and ground.


Battery volts	12
Ground	Negative
Batteries	2
	61 (with cab)
Charging system	Alternator
Battery CCA	470
Charging amps	42

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.

More International Harvester models

5288177 HP · 1981 - 1985 6588177 HP · 1981 - 1984 4166175 HP · 1972 - 1976 1568172 HP · 1974 - 1976 1566183 HP · 1974 - 1976 1486B167 HP · 1981 - 1982 3588167 HP · 1978 - 1981 A-1486167 HP · 1979 - 1980

View all 252 International Harvester models →

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