International Harvester Hydro 186 Overview
The International Harvester Hydro 186 was produced from 1976 through 1981. It uses a 436 ci (7.1 L) engine rated at 2,400 rpm, with a Category II rear hitch listed at 6,660 lb lift at 24 inches. The open-center hydraulic system has 12 gpm pump flow and two valves. The independent rear PTO is 540/1000. Fuel capacity is 50 gal, hydraulic capacity is 28.5 gal, and listed weight ranges from 11500 to 13135 pounds. The serial-number location is at the rear axle.
International Harvester Hydro 186 Quick Answers
- Production years1976-1981
- Engine436 ci (7.1 L) at 2400 rpm
- Rear PTOIndependent 540/1000 (1.375)
- Fuel capacity50 gal (189.2 L)
Engine and Power
The 436 ci engine is listed at 2,400 rpm and uses a dual dry-element air cleaner.
Diesel engine
| Displacement | 436 ci 7.1 L |
|---|---|
| Air Cleaner | dual dry element |
| Rated Rpm | 2400 |
| Coolant Capacity | 26 qts 24.6 L |
Manufacture years
PTO and Hitch
The independent rear PTO is listed as 540/1000 (1.375), with a Category II rear hitch.
Rear PTO
Rear PTO type
Rear hitch
Rear lift at 24 inches
Hydraulics
The open-center hydraulic system is listed with 12 gpm pump flow and two valves.
Type
Capacity
Pump flow
Valves
Fluids, Battery, and Service Facts
Listed capacities include 14 qts of engine oil, 26 qts of coolant, 50 gal of fuel, and 28.5 gal for hydraulics.
Fuel tank
Engine oil capacity
Hydraulic system
Accuracy Note
Tractor specifications can vary by year, region, factory configuration, installed equipment, and later repairs. Match serial range, engine, transmission, PTO setup, and model code before ordering parts or doing service work.