Case IH 686 Tractor Parts

686 parts and accessories

The Case IH 686 tractor, manufactured from 1976 to 1981, was a popular choice for farmers due to its reliable performance and versatile capabilities. Powered by a diesel engine producing around 66 horsepower, the 686 offered sufficient power for various tasks. Its robust design and practical PTO horsepower made it a valuable asset for small to medium-sized farming operations.

The Case IH 686 tractor was introduced in 1976 and remained in production until 1981, forming part of the International Harvester (IH) line that transitioned to Case IH. This model was designed to offer a balance of power and affordability to farmers. Under the hood, it typically featured an International Harvester D-239 4-cylinder diesel engine, producing approximately 66 engine horsepower. Displacement was around 239 cubic inches. The transmission was typically a gear-type transmission with 8 forward and 4 reverse speeds, providing ample gearing options for diverse tasks. The PTO horsepower was rated at around 58 HP, available in a 540 RPM configuration. The hydraulic system offered a flow rate of approximately 12 GPM, powering rear remotes for implements. Its 3-point hitch was classified as Category II, with a lift capacity around 3,300 lbs. Farmers commonly utilized the 686 for tasks like row crop cultivation, hay baling, livestock feeding, and light tillage. Compared to smaller models, the 686 offered increased power and hydraulic capacity, while remaining more economical and maneuverable than the larger IH models. Its straight forward design contributed to easy maintenance and repair.

Specifications

Engine	International Harvester D-239 66 HP Diesel
PTO HP	58 HP @ 540 RPM
Transmission	Gear, 8F/4R
Hydraulics	12 GPM, 2 remotes
3-Point Hitch	Category II, 3300 lbs lift capacity
Fuel Capacity	21 gallons
Weight	6,140 lbs
Years Produced	1976-1981

Maintenance Tips

Engine Oil & Filter: Change the engine oil and filter every 250 hours of operation using a high-quality oil meeting the manufacturer's specifications. Regular oil changes are crucial for engine longevity.
Hydraulic System: Inspect and maintain hydraulic fluid levels regularly. Replace hydraulic filters every 500 hours or as recommended to prevent contamination and ensure smooth operation.
Fuel System: Use clean, high-quality diesel fuel and replace the fuel filter annually or after every 500 hours of operation. Drain any water accumulation from the fuel tank periodically.
Seasonal Storage: Before storing the tractor for the off-season, stabilize the fuel, grease all fittings, and disconnect the battery. Store the tractor in a dry location to prevent rust and corrosion.

History & Background

The Case IH 686 was launched during a period of transition for International Harvester, eventually becoming a Case IH model as the companies merged. This tractor was a practical and reliable workhorse that filled a vital niche in the agricultural market, providing farmers with a capable machine for a wide range of tasks.

Frequently Asked Questions

What engine is in the Case Ih 686?

The Case IH 686 is equipped with an International Harvester D-239 4-cylinder diesel engine, producing approximately 66 horsepower.

What is the PTO horsepower on a 686?

The PTO horsepower on the Case IH 686 is approximately 58 HP, operating at 540 RPM.

What oil filter fits the 686?

Common oil filter cross-references for the Case IH 686 include Fram PH2870A, Wix 51258, and Baldwin B227. Always verify fitment with your specific engine configuration.

What are common parts needed for the 686?

Common wear parts for the Case IH 686 include engine oil filters, fuel filters, hydraulic filters, belts (fan, alternator), hydraulic seals, steering components (tie rod ends), clutch discs and pressure plates.

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