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).

1250436C2 - Quarter (RH/LH) Rear Glass
SKU: 1250436C2
84 in stock

117722C4 - Cab Mount Insulator
SKU: 117722C4
101 in stock

111332C1 - Door (RH) Handle
SKU: 111332C1
32 in stock

109596C1 - RH Cab Door Seal
SKU: 109596C1
43 in stock

109595C1 - LH Cab Door Seal
SKU: 109595C1
41 in stock

109584C2 - Door (RH/LH) Glass
SKU: 109584C2
35 in stock

109319C2 - Quarter (LH/RH) Rear Glass
SKU: 109319C2
95 in stock

109318C2 - Rear Glass
SKU: 109318C2
20 in stock

109133C3 - Upper Windshield Glass
SKU: 109133C3
7 in stock

109132C2 - Lower (RH) Windshield Glass
SKU: 109132C2
3 in stock

109131C2 - Lower (LH) Windshield Glass
SKU: 109131C2
11 in stock

PCK720 - PTO Clutch Disc & Gasket Kit
SKU: PCK720
47 in stock

77720C94 - Seal & Gasket Kit
SKU: 77720C94
976 in stock

68803C91 - Consist Of: PTO Clutch Disc Kit
SKU: 68803C91
222 in stock

68802C91 - Consist Of: PTO Clutch Disc Kit
SKU: 68802C91
51 in stock

64785C92 - Rear PTO Housing Cover
SKU: 64785C92
Out of stock

576539R1 - Needle; PTO Driven Gear Bearing
SKU: 576539R1
236 in stock

393111R2 - PTO 540 RPM Shaft
SKU: 393111R2
128 in stock

393071R2 - DUST; IND. PTO CTRL. / DIFF. LOCK BOOT
SKU: 393071R2
407 in stock

389529R1 - PTO Drive Shaft
SKU: 389529R1
16 in stock

381509R1 - PTO Idler Gear
SKU: 381509R1
7 in stock

381508R1 - Thrust (IPTO Idler) Washer
SKU: 381508R1
69 in stock

381507R1 - Ind. PTO Idler Shaft
SKU: 381507R1
36 in stock

381506R1 - IPTO Driven Gear
SKU: 381506R1
6 in stock
