International Harvester 1586

The International Harvester 1586 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is 161.55 hp 120.5 kW. Transmission: Torque Amplifier. Operating weight: 13600 to 15120 pounds.

Engine Power

161.55 hp 120.5 kW

Fuel & Capacities

63 gal 238.5 L

Transmission

Torque Amplifier

Operating Weight

13600 to 15120 pounds

Overview

	1976 - 1981 86 SeriesRow-Crop tractor 86 Series Row-Crop tractor

Production
Manufacturer	International Harvester
Row-Crop tractor
Built in Rock Island, Illinois, USA
Total built	13,636
Original price was $43,300 in 1981

International Harvester 1586 Engine
International Harvester 7.1L 6-cyl diesel
Engine details ...

International Harvester 1586 Transmission
12-speed two-speed power shift
Transmission details ...

International Harvester 1586 Power
Drawbar (claimed)	140 hp 104.4 kW
PTO (claimed)	160 hp 119.3 kW
Drawbar (tested)	134.94 hp 100.6 kW
PTO (tested)	161.55 hp 120.5 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Steering	power assist
Hydraulic disc brakes
Cab standard with air-conditioning. Open operator station and four-post ROPS available.

Capacity
Fuel	63 gal 238.5 L
	22 gal (auxiliary) 83.3 L
Hydraulic system	27 gal 102.2 L

Hydraulics
Type	open center
	closed center *Optional after late 1980.
Capacity	27 gal 102.2 L
Valves	2
Pump flow	12 gpm 45.4 lpm

Tractor hitch
Rear Type	III

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000 (1.75)
Engine RPM	1000@2100

Dimensions & Tires
Wheelbase	105 inches 266 cm
Weight	13600 to 15120 pounds
Front tire	11.00-16
Rear tire	20.8-38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	42
	61 (with cab)
Batteries	2
Battery CCA	470
Battery volts	12

References

1978 Buyer's Guide published by International Harvester
1979 Buyer's Guide published by International Harvester
Buyer's Guide 1981 published by International Harvester
Series 86 Tractors published in 1976, by International Harvester
86 Series Tractors - The pro-ag line published in 1976, by International Harvester
Operator's Manual 786, 886, 986, 1086, 1486, 1586 and Hydro-186 Tractors (1096207R4) published in 1986

Engine

Engine Detail — 436 ci / 7.1 L Diesel

Manufacturer	International Harvester DT436
Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Displacement	436 ci 7.1 L
Bore/Stroke	4.30x5.00 inches 109 x 127 mm
Air cleaner	dual dry element
Rated RPM	2500
Coolant capacity	27 qts 25.6 L
Oil capacity	20 qts 18.9 L

Transmission

Transmission — Torque Amplifier

Transmission	Torque Amplifier
Type	two-speed power shift
Gears	12 forward and 6 reverse
Oil capacity	108 qts 102.2 L
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.
20.8-38 rear tires.

Dimensions

International Harvester 1586 Tires
Ag front	11.00-16
Ag rear	20.8-38

Dimensions
Wheelbase	105 inches 266 cm
Length	169 inches 429 cm
Width	112 inches 284 cm
Height (cab)	116 inches 294 cm
Ground clearance	14 inches 35 cm

International Harvester 1586 Weight
Shipping	13600 lbs 6168 kg
Operating	15120 lbs (2WD duals cab) 6858 kg
Ballasted	17600 lbs 7983 kg

Tests

Nebraska Tractor Test 1248
Diesel 12-speed 2WD June 3 - 22, 1977 Link: Nebraska Tractor Test 1248 file
PTO performance
Power at rated engine speed	161.55 hp 120.5 kW
Fuel use	10.6 gal/hour 40.1 l/hour
Power at rated PTO speed	156.09 hp 116.4 kW
Fuel use	9.5 gal/hour 36.0 l/hour
Drawbar performance
Max power	134.94 hp 100.6 kW
Fuel use	10.4 gal/hour 39.4 l/hour
Max pull	16,665 lbs 7559 kg

Photos

International Harvester 1586

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 1586 based on its 161.55 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	5 to 7 Bottom (18")5 - 7 铧 (45 cm)	Commercial / Field Scale	Large acreage tillage; requires front ballast weights.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙	Commercial / Field Scale	Wide commercial field leveling; requires hydraulic remotes.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester 1586.

Estimated Continuous Field Runtime: 7.5 hrs

Approximately 7.5 hours of continuous field operation at ~75% rated power on a full tank (63 gal / 238.5 L).

Estimated 75% Load Fuel Burn~8.4 gal/hr (31.8 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours