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Tractor · 1976Unverified

International Harvester Hydro 186

Name: International Harvester Hydro 186
Brand: International Harvester

International Harvester Hydro 186 — 86 Series · 105 hp. Reference specifications; pending source verification.

The International Harvester Hydro 186 is a tractor model with a rated output of 105 hp, placing it in the middle of its class for power. Produced from 1976 to 1981, the Hydro 186 features a 6-cylinder diesel liquid-cooled engine coupled with a hydrostatic transmission and four-wheel drive. Its listed weight ranges from 11500 to 13135 pounds, and it is suitable for tasks involving around 200–800 acres.

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

Rated power

105 hp

Max power

59.5 kW

Weight

11500 to 13135 pounds

Catalogue coverage

Variants represented

Richest spec table

93 rows

Recorded power

105 hp

Transmissions

hydrostatic

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

Original price$33,900 (1981)Reference

Two- or four-wheel driveReference

Final drivesbull gearReference

Steeringpower assistReference

Hydraulic disc brakesReference

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

Variants

Hydro 186 Hi-Clearhigh clearanceReference

Engine

International Harvester 7.1L 6-cyl dieselReference

Drawbar (claimed)61.1 kWReference

Drawbar (tested)59.5 kWReference

International Harvester D436Reference

dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.1 LReference

Bore/Stroke109 x 127 mmReference

Air cleanerdual dry elementReference

Rated RPM2400Reference

Coolant capacity24.6 LReference

Oil capacity13.2 LReference

Power at rated engine speed78.3 kWReference

Max power59.5 kWReference

PTO & Hydraulics

PTO (claimed)77.6 kWReference

PTO (tested)78.3 kWReference

Hydraulic system107.9 LReference

Typeopen centerReference

Typeclosed centerReference

Capacity107.9 LReference

Valves2Reference

Pump flow45.4 lpmReference

Rear TypeIIReference

Rear lift (at 24"/610mm)3020 kgReference

Rear PTOindependentReference

Rear PTO Type540/1000 (1.375)Reference

Engine RPM540@2100Reference

Engine RPM1000@2100Reference

Power at rated PTO speed74.8 kWReference

Capacities

Fuel189.2 LReference

Fuel83.3 LReference

Dimensions

Wheelbase266 cmReference

Wheelbase256 cmReference

Wheelbase251 cmReference

Wheelbase269 cmReference

Weight11500 to 13135 poundsReference

Front tire10.00-16Reference

Rear tire18.4-34Reference

Ag front10.00-16Reference

Ag rear18.4-34Reference

2WD Length424 cmReference

4WD Length414 cmReference

4WD Length429 cmReference

Width259 cmReference

Width248 cmReference

Height (cab)284 cmReference

Height (cab)317 cmReference

Ground clearance33 cmReference

Ground clearance66 cmReference

Bar rear axle82 mmReference

Shipping5216 kgReference

Shipping5601 kgReference

Operating5958 kgReference

Hydro 186 Serial Numbers

Location:Rear axle.Reference

19768601Reference

19778813Reference

19789806Reference

197910626Reference

198011465Reference

198112279Reference

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 hydrostatic 2WDSeptember 22 - October 3, 1977Link: Nebraska Tractor Test 1257 fileReference

PTO performanceReference

Fuel use30.7 l/hourReference

Fuel use27.6 l/hourReference

Drawbar performanceReference

Pull at 9.6 KPHReference

Max pull5131 kgReference

Pull at 3.9 KPHReference

Transmission

TransmissionhydrostaticReference

Gearsvariable, two-range forward and reverseReference

Oil capacity107.9 LReference

Oil typeIH Hy-Tran/B-6Reference

A range lever on the right console allows the selection of high, low, or reverse range. Speed is controlled by the speed-control lever on the left side of the instrument panel. An inching pedal is located on the left side of the tractor, and allows for small movements when connecting implements.Reference

Speeds

18.4-34 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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