Case IH HYDRO-186 Tractor Parts
Hydro 186 parts and accessories
The Case IH Hydro 186, manufactured from 1971 to 1979, was a popular agricultural tractor known for its hydrostatic transmission. Powered by a 108 horsepower diesel engine, this tractor delivered approximately 95 PTO horsepower. Its efficient hydrostatic drive system provided farmers with precise control and ease of operation, making it a favorite for various field tasks.
The Case IH Hydro 186 tractor was introduced in 1971 and remained in production until 1979. It was designed to offer enhanced operator control and efficiency through its hydrostatic transmission. The tractor is equipped with an International Harvester D358 5.9L 6-cylinder diesel engine, producing around 108 horsepower. Its hydrostatic transmission allowed for infinitely variable speeds, providing excellent control during field operations. The PTO horsepower is rated at 95 HP, and it features a 540 RPM PTO. The hydraulic system has a capacity of approximately 15.5 GPM, typically equipped with two remote valves. The 3-point hitch is a Category II, offering a lift capacity of around 4,800 lbs. Common applications for the Hydro 186 included row crop cultivation, hay baling, livestock operations, and light tillage work. What distinguished the Hydro 186 was its hydrostatic transmission, offering smoother operation and eliminating the need for manual gear shifting, setting it apart from other gear-driven tractors in the Case IH lineup.
Specifications
| Engine | International Harvester D358 108 HP 5.9L Diesel |
|---|---|
| PTO HP | 95 HP @ 540 RPM |
| Transmission | Hydrostatic Infinitely Variable |
| Hydraulics | 15.5 GPM, 2 remotes |
| 3-Point Hitch | Category II, 4800 lbs |
| Fuel Capacity | 34 gallons |
| Weight | 9,440 lbs |
| Years Produced | 1971-1979 |
Maintenance Tips
- Engine Oil & Filter: Change engine oil and filter every 250 hours using a high-quality diesel engine oil. Regularly inspect the oil level and condition.
- Hydraulic System: Check hydraulic fluid levels and inspect for leaks regularly. Change hydraulic fluid and filter every 500 hours or as recommended by the manufacturer. Use the correct type of hydraulic fluid to prevent damage.
- Fuel System: Use clean, high-quality diesel fuel. Replace fuel filters annually or every 250 hours. Drain water from the fuel tank regularly to prevent contamination and injector issues.
- Seasonal Storage: Before storing the tractor for the winter, stabilize the fuel, change engine oil and filter, grease all fittings, and disconnect the battery. Store the tractor in a dry location.
History & Background
The Case IH Hydro 186 was introduced in 1971 as part of the International Harvester's (later Case IH) commitment to innovative tractor technology. This model stood out due to its hydrostatic transmission, offering a distinct advantage in control and ease of use. The Hydro 186 played a significant role in the evolution of tractor design, showcasing the benefits of hydrostatic drive in agricultural applications.
Frequently Asked Questions
What engine is in the Case Ih Hydro 186?
The Case IH Hydro 186 is powered by an International Harvester D358 6-cylinder diesel engine producing 108 horsepower with a displacement of 5.9 liters.
What is the PTO horsepower on a Hydro 186?
The PTO horsepower on the Case IH Hydro 186 is rated at 95 HP and operates at 540 RPM.
What oil filter fits the Hydro 186?
Common oil filter options for the Hydro 186 include International Harvester 3137348R91, Fleetguard LF670, and Wix 51794. Always verify compatibility with your specific tractor's configuration.
What are common parts needed for the Hydro 186?
Commonly replaced parts on the Hydro 186 include engine oil filters, fuel filters, hydraulic filters, belts, hydraulic cylinder seals, steering components (tie rod ends, ball joints), and clutch components (if equipped with a manual transmission option).

381505R1 - Independent PTO Output Shaft (540 RPM) Spacer
SKU: 381505R1
46 in stock

381480R1 - Output Shaft Oil Seal
SKU: 381480R1
111 in stock

381464R22 - Anti Creep Brake Piston Assembly
SKU: 381464R22
51 in stock

148663C1 - PTO 540 RPM Shaft
SKU: 148663C1
22 in stock

1264520C1 - PTO Cover
SKU: 1264520C1
23 in stock

1264503C1 - PTO Shield
SKU: 1264503C1
44 in stock

120985C1 - PTO 1000 RPM Shaft
SKU: 120985C1
11 in stock

V56662 - 3sp) Rev rotation 3/8" X 4 1/4" shaft Blower Motor (4 wire) (12volt
SKU: V56662
129 in stock

V35513 - Sub To BM333812
SKU: V35513
129 in stock

V31510 - Expansion Valve
SKU: V31510
151 in stock

V18380 - 3sp) Rev rotation 3/8" X 4 1/4" shaft Blower Motor (4 wire) (12volt
SKU: V18380
129 in stock

V103596 - 3sp) Rev rotation 3/8" X 4 1/4" shaft Blower Motor (4 wire) (12volt
SKU: V103596
129 in stock

F64389 - Expansion Valve
SKU: F64389
151 in stock

F63726 - Expansion Valve
SKU: F63726
151 in stock

E5NN18527AA - 3sp) Rev rotation 3/8" X 4 1/4" shaft Blower Motor (4 wire) (12volt
SKU: E5NN18527AA
129 in stock

D2NN19N581B - BLOWER MOTOR
SKU: D2NN19N581B
129 in stock

BM2793 - Blower Motor Wheel
SKU: BM2793
10 in stock

A66058 - Clutch
SKU: A66058
45 in stock

A42622 - Blower Switch
SKU: A42622
284 in stock

9807217 - 3sp) Rev rotation 3/8" X 4 1/4" shaft Blower Motor (4 wire) (12volt
SKU: 9807217
129 in stock

87033212 - Expansion Valve (block type)
SKU: 87033212
113 in stock

66398C1 - Expansion Valve
SKU: 66398C1
151 in stock

60-5880T1 - Expan.Valve
SKU: 60-5880T1
113 in stock

572832R91 - Receiver Drier
SKU: 572832R91
32 in stock
