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International Harvester Hydro 186

International Harvester Hydro 186 tractor
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The International Harvester Hydro 186 is a row-crop tractor produced from 1976 to 1981 as part of the 86 Series. Built in Rock Island, Illinois, USA, it features a 7.1L 6-cylinder diesel engine with hydrostatic transmission offering variable speeds with two-range forward and reverse. It is available in two- or four-wheel drive configurations with power assist steering and hydraulic disc brakes. The tractor includes a standard cab with air-conditioning, with options for an open operator station and four-post ROPS. Fuel capacity is 50 gallons with an auxiliary 22 gallons, and the hydraulic system holds 28.5 gallons. The rear hitch is category II with a lift capacity of 6660 lbs at 24 inches. PTO is independent with 540/1000 RPM options. Dimensions vary by configuration, with wheelbase ranging from 99 to 106 inches and operating weight up to 13,135 lbs. Electrical system features a 12-volt negative ground with a 42-amp alternator (61 amps with cab).
International HarvesterHydro 186tractorspecificationsenginetransmissiondimensionspowerhydraulicsfarm tractor
Power115 hp[P]
Founded1976 - 1981
ModelHydro 186

Technical Specifications

Detailed specifications and technical data for International Harvester Hydro 186

Power

PTO (tested):105.02 hp (78.3 kW)
PTO (claimed):104 hp (77.6 kW)
Drawbar (tested):79.83 hp (59.5 kW)
Drawbar (claimed):82 hp (61.1 kW)

Tires

Rear tire:18.4-34
Front tire:10.00-16

Engine

Type:diesel
Model:International Harvester D436
Cooling:liquid-cooled
Cylinders:6-cylinder
Rated RPM:2400
Air cleaner:dual dry element
Bore/Stroke:4.30x5.00 inches (109 x 127 mm)
Displacement:436 ci (7.1 L)
Oil capacity:14 qts (13.2 L)
Coolant capacity:26 qts (24.6 L)

Weight

Shipping:11,500 lbs (5216 kg), 12,350 lbs (Hi-Clear) (5601 kg)
Operating:13,135 lbs (5958 kg)

Capacity

Fuel:50 gal (189.2 L), 22 gal (auxiliary) (83.3 L)
Hydraulic system:28.5 gal (107.9 L)

Dimensions

Width:102 inches (259 cm), 98 inches (Hi-Clear) (248 cm)
Length:167 inches (2WD) (424 cm), 163 inches (4WD) (414 cm), 169 inches (Hi-Clear) (429 cm)
Wheelbase:105 inches (266 cm), 101 inches (tricycle front) (256 cm), 99 inches (4WD) (251 cm), 106 inches (Hi-Clear) (269 cm)
Height (cab):112 inches (284 cm), 125 inches (Hi-Clear) (317 cm)
Ground clearance:13 inches (33 cm), 26 inches (Hi-Clear) (66 cm)

Electrical

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

Hydraulics

Type:open center, closed center (Optional after late 1980)
Valves:2
Capacity:28.5 gal (107.9 L)
Pump flow:12 gpm (45.4 lpm)

Mechanical

Cab:standard with air-conditioning. Open operator station and four-post ROPS available.
Drive:Two- or four-wheel drive
Brakes:Hydraulic disc brakes
Steering:power assist
Final drives:bull gear

Production

Type:Row-Crop tractor
Series:86 Series
Built in:Rock Island, Illinois, USA
Variants:Hydro 186 Hi-Clear (high clearance)
Original price:$33,900 (1981)
Years produced:1976 - 1981

Transmission

Type:hydrostatic
Gears:variable, two-range forward and reverse
Controls: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.
Oil type:IH Hy-Tran/B-6
Oil capacity:114 qts (107.9 L)

Tractor hitch

Rear Type:II
Rear lift (at 24"/610mm):6660 lbs (3020 kg)

Power Take-off (PTO)

Rear PTO:independent
Engine RPM:540@2100, 1000@2100
Rear PTO Type:540/1000 (1.375)

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