John Deere 9860STS Combine Parts

9860STS parts and accessories

The John Deere 9860STS combine, manufactured from 2003 to 2010, was a powerhouse known for its high-capacity harvesting. Powered by a robust engine producing over 350 horsepower, it handled wide headers effectively. The heart of this machine was its single-rotor separator, which proved popular among farmers seeking increased throughput and grain quality compared to conventional combines.

The John Deere 9860STS was introduced in 2003 as part of the STS (Single Tine Separation) combine series and remained in production until 2010. It's equipped with a John Deere 9.0L PowerTech engine producing 375 horsepower (max boost to 400 HP). This displacement provided ample power for demanding harvest conditions. The 9860STS uses a single-rotor separator, featuring a bullet rotor design with adjustable concaves for optimal threshing and separation. Grain tank capacity is 300 bushels, and the unloading auger boasts a speed of 3.0 bu/sec (180 bu/min). Compatible header widths range from 20 to 36 feet, allowing for efficient harvesting across various crop types. Chopper and spreader options were available to manage residue effectively. The cab featured enhanced comfort and technology, including advanced monitoring systems. The 9860STS excels in harvesting corn, soybeans, wheat, and other small grains due to its high capacity and efficient separation system.

Specifications

Engine	John Deere 9.0L PowerTech 375 HP Diesel (Max Boost 400 HP)
Separator Type	Single Rotor - Bullet Rotor with Adjustable Concaves
Grain Tank	300 bushels
Unloading Rate	180 bu/min
Header Widths	20-36 ft
Fuel Capacity	200 gallons
Weight	32,500 lbs (approximate)
Years Produced	2003-2010

Maintenance Tips

Concave Adjustment: Regularly inspect and adjust concave clearance according to the crop being harvested. Proper clearance minimizes grain loss and maximizes threshing efficiency.
Belt and Chain Tension: Maintain proper tension on all belts and chains to ensure smooth operation and prevent premature wear. Check for wear and replace as needed.
Sieve and Chaffer Cleaning: Regularly clean the sieves and chaffer to prevent buildup of debris, which can reduce cleaning efficiency and increase grain loss.
Bearing Greasing: Follow the manufacturer's recommended greasing schedule for all bearings to ensure proper lubrication and prevent bearing failure.

History & Background

The John Deere 9860STS was introduced in 2003 as a key model in the STS series, marking John Deere's commitment to rotary combine technology. It built upon the success of previous models by offering increased capacity and improved grain quality. The 9860STS played a significant role in advancing harvesting efficiency for farmers across the globe during its production run.

Frequently Asked Questions

What engine is in the John Deere 9860STS?

The John Deere 9860STS is equipped with a John Deere 9.0L PowerTech diesel engine, producing 375 horsepower with a max boost to 400 horsepower.

What is the grain tank capacity on a 9860STS?

The John Deere 9860STS has a grain tank capacity of 300 bushels and an unloading rate of 180 bushels per minute.

What type of separator does the 9860STS have?

The John Deere 9860STS features a single-rotor separator system, known as the STS (Single Tine Separation) system, with a bullet rotor and adjustable concaves for optimal threshing and separation.

What are common parts needed for the 9860STS?

Common wear parts for the John Deere 9860STS include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. Regular inspection and replacement of these parts are crucial for maintaining optimal performance.

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