John Deere 9870STS Combine Parts

9870STS parts and accessories

The John Deere 9870STS combine, manufactured from 2008-2011, brought advanced harvesting technology to farms with its powerful engine and efficient rotary separation. Boasting a significant horsepower engine and compatibility with a wide range of header widths, the 9870STS quickly gained popularity among farmers for its performance and reliability. Its rotary separation system made it particularly effective in high-yielding crops.

The John Deere 9870STS, produced between 2008 and 2011, represented a significant advancement in combine technology. It was powered by a John Deere PowerTech 9.0L diesel engine, delivering approximately 475 horsepower. This engine provided ample power for handling demanding harvesting conditions. The 9870STS features a single-rotor separator, providing efficient threshing and separation of grain from crop residue. Its large 350-bushel grain tank minimized downtime, allowing for extended operation in the field. An unloading auger with a rate of approximately 3.3 bushels per second (around 200 bu/min) ensured quick and efficient grain unloading. Available header widths ranged from 30 to 40 feet, accommodating various field sizes and crop types. The 9870STS also offered options for chopper and spreader systems to manage crop residue effectively. The combine's comfortable and ergonomic cab provided operators with excellent visibility and intuitive controls. The 9870STS excels at harvesting a variety of crops, including corn, soybeans, wheat, and other small grains, making it a versatile choice for diverse farming operations.

Specifications

Engine	John Deere PowerTech 9.0L 475 HP Diesel
Separator Type	Rotary - Single Rotor
Grain Tank	350 bushels
Unloading Rate	200 bu/min
Header Widths	30-40 ft
Fuel Capacity	250 gallons
Weight	34,000 lbs
Years Produced	2008-2011

Maintenance Tips

Concave Adjustment: Regularly inspect and adjust concave clearance based on the crop being harvested to optimize threshing performance and minimize grain loss.
Belt and Chain Tension: Routinely check and maintain proper tension on all belts and chains to prevent slippage, wear, and potential failures.
Sieve and Chaffer Cleaning: Clean sieves and chaffers frequently to remove debris and ensure proper airflow for efficient grain cleaning and separation.
Bearing Greasing: Grease all bearings according to the manufacturer's recommendations to reduce friction, prevent overheating, and extend bearing life.

History & Background

The John Deere 9870STS was introduced in 2008 as part of the STS combine series, building upon the success of previous models with improvements to capacity and efficiency. There were no major redesigns during its production run, solidifying its position as a reliable and productive combine. It marked a continued advancement in rotary separation technology for John Deere.