International Harvester Hydro 186
Power
115 hp[P] hp
Production
1976-1981
Engine
6-cylinder
Drive
2WD/4WD
From the same series:
Introduction
International Harvester Hydro 186 Row-Crop Tractor
The International Harvester Hydro 186 is a row-crop tractor manufactured in Rock Island, Illinois, between 1976 and 1981. It belongs to the manufacturer's heavy-duty series, sharing design characteristics with models such as the 986 and 1086, and was positioned as a versatile machine for mid-to-large scale agricultural operations.
Engine and Powertrain
The tractor is powered by a 7.1-liter (436 ci) six-cylinder liquid-cooled engine. It features a bore and stroke of 109 x 127 mm and is rated at 2400 RPM, delivering 115 horsepower. The engine intake is protected by a dual dry element air cleaner, and the system maintains an oil capacity of 13.2 liters with a coolant capacity of 24.6 liters.
Transmission and Mechanical Features
The Hydro 186 is available in both two-wheel and four-wheel drive configurations. Mechanical handling is assisted by power steering and hydraulic disc brakes for increased operator control. Final drives utilize a bull gear design. The operator environment includes a standard cab equipped with air conditioning, though an open station with a four-post ROPS was also offered.
Hydraulics and Hitch
The hydraulic system features an open-center design with a pump flow of 45.4 liters per minute (12 gpm) and a total reservoir capacity of 107.9 liters. It is equipped with two valves for implement control. The rear hitch is a Category II type, capable of a lift capacity of 3020 kg (6660 lbs) measured at 24 inches behind the lift point.
Power Take-Off (PTO)
The tractor is equipped with an independent rear PTO capable of operating at 540 or 1000 RPM. Both speeds are achieved at an engine speed of 2100 RPM. The PTO shaft size is standard 1.375 inches.
Conclusion
The International Harvester Hydro 186 is a robust row-crop tractor designed for sustained agricultural productivity. Its combination of a high-displacement six-cylinder engine, versatile hydraulic capacity, and dual-speed independent PTO makes it suitable for a wide range of pulling and implement-driven tasks.
Production Information of International Harvester, Hydro 186
- Row-Crop tractor
- Built in Rock Island, Illinois, USA
| Manufacturer | International Harvester |
|---|---|
| Original price | $33,900 (1981) |
Dimension and Tires Information of International Harvester, Hydro 186
| Wheelbase | 105 inches [266 cm] |
|---|---|
| Length | 167 inches (2WD) [424 cm] |
| Length(optional) | 106 inches (Hi-Clear) [269 cm] |
| Length(optional) | 101 inches (tricycle front) [256 cm] |
| Width | 102 inches [259 cm] |
| Width(optional) | 163 inches (4WD) [414 cm] |
| Width(optional) | 99 inches (4WD) [251 cm] |
| Width(optional) | 26 inches (Hi-Clear) [66 cm] |
| Ground clearance | 13 inches [33 cm] |
| Height (cab) | 112 inches [284 cm] |
| Height (cab)(optional) | 98 inches (Hi-Clear) [248 cm] |
| Height (cab)(optional) | 169 inches (Hi-Clear) [429 cm] |
| Ag front | 10.00-16 |
|---|---|
| Ag rear | 18.4-34 |
Engine Specifications of International Harvester, Hydro 186
- Liquid-cooled
- 6-cylinder
| Air cleaner | Dual dry element |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Oil capacity | 14 qts [13.2 L] |
| Rated RPM | 2400 |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Coolant capacity | 26 qts [24.6 L] |
Mechanical Specs of International Harvester, Hydro 186
- Two- or four-wheel drive
- Cab standard with air-conditioning. Open operator station and four-post ROPS available.
- Hydraulic disc brakes
| Final drives | Bull gear |
|---|---|
| Steering | Power assist |
Power Information of International Harvester, Hydro 186
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2100 |
| Rear PTO Type | 540/1000 (1.375) |
| Engine RPM | 540@2100 |
Hydraulics Specifications of International Harvester, Hydro 186
| Type | Open center |
|---|---|
| Pump flow | 12 gpm [45.4 lpm] |
| Valves | 2 |
| Valves(optional) | Closed center |
| Capacity | 28.5 gal [107.9 L] |
Optional after late 1980.
Three-Point Hitch of International Harvester, Hydro 186
| Rear Type | II |
|---|---|
| Rear lift (at 24"/610mm) | 6660 lbs [3020 kg] |
Electrical System of International Harvester, Hydro 186
| Battery volts | 12 |
|---|---|
| Ground | Negative |
| Batteries | 2 |
| Batteries(optional) | 61 (with cab) |
| Charging system | Alternator |
| Battery CCA | 470 |
| Charging amps | 42 |
Where it sits
With 115 hp[P] HP, the International Harvester Hydro 186 sits just below 986 (116 HP) in International Harvester's range. Its power puts it in the 74th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester Hydro 186 have?
The International Harvester Hydro 186 delivers 115 hp[P] HP.
What years was the International Harvester Hydro 186 produced?
The International Harvester Hydro 186 was produced in 1976-1981.
What engine does the International Harvester Hydro 186 have?
The International Harvester Hydro 186 is powered by a 6-cylinder engine.
Is the International Harvester Hydro 186 4WD?
The International Harvester Hydro 186 is available in 2WD/4WD.