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Tractor · 1976Unverified

International Harvester 1086

Name: International Harvester 1086
Brand: International Harvester

International Harvester 1086 — 86 Series · 131 hp. Reference specifications; pending source verification.

The International Harvester 1086 is a tractor model with an approximate power output of 131 hp, positioning it at the higher end of its class. Manufactured from 1976 to 1981, this model features a 6-cylinder turbocharged diesel liquid-cooled engine, paired with a powershift transmission and four-wheel drive. The operating weight of the 1086 falls within the range of 12300 to 13030 pounds, and it is suitable for operations spanning 200–800 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

131 hp

Max power

84.3 kW

Weight

12300 to 13030 pounds

Catalogue coverage

Variants represented

Richest spec table

102 rows

Recorded power

131 hp

Transmissions

8-speed gear

Production years

1976-1981

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerInternational HarvesterReference

Row-Crop tractorReference

Built in Rock Island, Illinois, USAReference

Total built47,420Reference

Original price was $35,700 in 1981Reference

Two- or four-wheel driveReference

Final drivesbull gearReference

Differential lockmechanical rearReference

Steeringpower assistReference

Hydraulic disc brakesReference

Cab standard with air-conditioning. Open operator station and four-post ROPS available.Reference

Variants

1086 Hi-Clearhigh clearanceReference

Engine

International Harvester 6.8L 6-cyl dieselReference

Drawbar (claimed)85.0 kWReference

Drawbar (tested)84.3 kWReference

International Harvester DT-414Reference

turbocharged dieselReference

6-cylinderReference

liquid-cooledReference

Displacement6.8 LReference

Bore/Stroke109 x 121 mmReference

Air cleanerdual dry elementReference

Rated RPM2400Reference

Coolant capacity23.7 LReference

Oil capacity18.9 LReference

Power at rated engine speed98.0 kWReference

Max power84.3 kWReference

Transmission

8-speed gearReference

16-speed two-speed power shiftReference

TypegearReference

Gears8 forward and 4 reverseReference

Oil capacity85.2 LReference

The transmission features three ranges (low, high, and reverse) with four gears (1-4) in each range. The range and gear can be shifted only when the tractor is stopped.Reference

TransmissionTorque AmplifierReference

Typetwo-speed power shiftReference

Gears16 forward and 8 reverseReference

Oil typeIH Hy-Tran/B-6Reference

The transmission features three ranges (low, high, and reverse) with four gears (1-4) 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.Reference

PTO & Hydraulics

PTO (claimed)96.9 kWReference

PTO (tested)98.0 kWReference

Hydraulic system85.2 LReference

Typeopen centerReference

Typeclosed centerReference

Capacity85.2 LReference

Valves2Reference

Pump flow45.4 lpmReference

Rear TypeIIIReference

Rear PTOindependentReference

Rear PTO Type540/1000 (1.375)Reference

Engine RPM540@2100Reference

Engine RPM1000@2100Reference

Power at rated PTO speed99.7 kWReference

Capacities

Fuel238.5 LReference

Fuel83.3 LReference

Dimensions

Wheelbase266 cmReference

Wheelbase256 cmReference

Wheelbase251 cmReference

Wheelbase269 cmReference

Weight12300 to 13030 poundsReference

Front tire10.00-16Reference

Rear tire18.4-38Reference

2WD Ag front10.00-16Reference

4WD Ag front13.6-24Reference

Ag rear18.4-38Reference

2WD Length426 cmReference

4WD Length419 cmReference

4WD Length429 cmReference

Width259 cmReference

Width248 cmReference

Height (cab)292 cmReference

Height (cab)320 cmReference

Ground clearance33 cmReference

Ground clearance66 cmReference

Bar rear axle88 mmReference

Shipping5579 kgReference

Shipping5910 kgReference

2WD Operating5767 kgReference

1086 Serial Number Location

Frame, right side ahead of the rear axle.Reference

1086 Serial Numbers

19768601Reference

197714725Reference

197825672Reference

197934731Reference

198042186Reference

198151671Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps42Reference

Charging amps61 (with cab)Reference

Batteries2Reference

Battery CCA470Reference

Battery volts12Reference

Test results

Diesel 16-speed 2WDJune 2 - 14, 1977Link: Nebraska Tractor Test 1247 fileReference

PTO performanceReference

Fuel use32.6 l/hourReference

Fuel use31.0 l/hourReference

Drawbar performanceReference

Fuel use32.2 l/hourReference

Gear 1-Hi-TA used for power test.Reference

Max pull6124 kgReference

Gear 2-Lo-DD used for pull test.Reference

Speeds

With 18.4-38 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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