Detailed Specifications and Performance Features of the 2007 John Deere 9860 STS Combine
The 2007 John Deere 9860 STS combine features a powerful 8.1-liter John Deere PowerTech Plus engine delivering 405 horsepower, ensuring consistent performance in demanding harvesting conditions. Its threshing system utilizes the Single Tine Separator (STS) technology, optimizing grain separation efficiency and reducing crop loss during operation.
This model offers a grain tank capacity of 300 bushels, allowing extended field time before unloading is necessary. The unloading system delivers a high flow rate of up to 3.8 bushels per second, minimizing downtime during grain offloading. Track or tire configurations provide flexibility to adapt to varying field conditions and reduce soil compaction.
The cab is equipped with the GreenStar monitoring system, providing real-time data on yield and machine performance. Operator comfort is enhanced by an ergonomic layout and adjustable seating. Regular maintenance intervals for engine oil, filters, and belts contribute to reliable operation and longevity of the combine during intensive harvest seasons.
2007 John Deere 9860 STS Combine Specs Detailed Overview
The 2007 John Deere 9860 STS features a powerful 9.0L John Deere PowerTech diesel engine delivering 375 horsepower. This engine ensures reliable performance and strong fuel efficiency for demanding harvest conditions.
This combine incorporates the Single-Tine Separator (STS) system, which improves threshing and separation capacity. It offers a grain tank capacity of 300 bushels, allowing longer operation between unloads and minimizing downtime.
The cleaning system includes a 4,240 square inch sieve area and an adjustable chaffer to optimize grain cleaning across various crop types. The unloading system moves grain at a rate of up to 3.7 bushels per second, speeding up the transfer process.
The machine’s dimensions support stability and maneuverability: it measures approximately 24 feet long and weighs around 33,000 pounds. The 9860 STS uses a variable-speed feederhouse and a large rotor diameter of 26 inches to enhance crop flow and reduce grain damage.
Operator comfort is ensured through an advanced cab design with climate control and easy-to-use controls. The optional Harvest Monitor system provides real-time data on yield, moisture, and machine performance, helping operators make informed adjustments during operation.
Regular maintenance includes timely checks of engine oil, hydraulic fluid, and rotor components to maintain optimal efficiency. The robust build and proven components make this model a dependable choice for large-scale harvesting tasks.
Engine Performance and Fuel Consumption Metrics for 2007 John Deere 9860 STS
The 2007 John Deere 9860 STS combines a robust 8.1-liter John Deere PowerTech Plus diesel engine with a rated horsepower of 375 hp, delivering consistent power for demanding harvesting tasks.
Key engine performance details include:
- Engine displacement: 8.1 liters (495 cubic inches)
- Maximum power output: 375 hp at 2,200 rpm
- Peak torque: Approximately 1,350 Nm (997 lb-ft)
- Engine speed range optimized for fuel economy and power delivery
Fuel consumption averages around 25-30 liters per hour (6.6 to 7.9 gallons per hour) during typical harvesting conditions. Actual consumption depends on crop type, terrain, and operational load.
To optimize fuel efficiency, monitor these factors:
- Maintain consistent engine speed close to rated rpm without excessive revving.
- Use proper header and rotor settings to minimize unnecessary engine load.
- Keep the engine well-maintained, including timely oil changes and air filter replacements.
- Avoid idling for extended periods to reduce fuel waste.
The 9860 STS’s advanced engine management system adjusts fuel injection and air intake for efficient combustion, balancing power needs with fuel economy. This ensures reliable performance even under heavy harvesting demands while controlling operating costs.
Threshing, Separating, and Cleaning System Specifications
The 2007 John Deere 9860 STS combine features a 28-inch diameter threshing cylinder with a 108-inch width, providing robust threshing capacity. The rotor length measures 74 inches, delivering efficient grain separation and minimizing grain damage. The machine operates at cylinder speeds ranging from 450 to 1050 RPM, adjustable to match crop conditions.
Its separation system incorporates a two-stage rotor design that maximizes grain separation while reducing straw damage. The concave area totals 3.8 square feet, allowing thorough threshing without grain loss. Adjustable concave clearance between 5/8 inch and 1-1/2 inches accommodates different crop types and moisture levels.
The cleaning system includes a 55-square-foot sieve area with a 5.9-foot-wide cleaning shoe, ensuring high cleaning capacity. Fan speed varies from 450 to 1000 RPM, optimized for effective chaff and debris removal. The sieve opening ranges from 3/8 inch to 1-1/2 inches, allowing precise calibration for grain size and foreign material separation.
Operators benefit from easy-to-use controls that adjust threshing, separation, and cleaning parameters on the go, improving productivity and reducing grain loss. Regular inspection and adjustment of cylinder speed, concave clearance, and fan speed are recommended to maintain optimal performance across varying harvest conditions.
Capacity and Dimensions Relevant to Field Operation and Transport
The 2007 John Deere 9860 STS combines a grain tank capacity of 300 bushels, enabling extended harvesting without frequent unloading. This capacity supports efficient field work, minimizing downtime during peak harvest periods.
Its overall length measures approximately 28 feet 6 inches, while the width varies based on header size; the standard header width is 25 feet, with options extending up to 35 feet. The height stands near 13 feet 6 inches, ensuring compatibility with most farm structures and transport regulations.
Transport width narrows to about 14 feet when equipped with foldable headers, facilitating safer road movement and compliance with legal limits. The machine weighs roughly 33,000 pounds, so adequate towing or transport equipment is necessary.
The combine’s ground clearance of 17 inches allows operation over uneven terrain without risking undercarriage damage. Track options further improve stability and reduce soil compaction in various field conditions.
Fuel tank volume reaches 160 gallons, offering long operating intervals between refueling stops, which supports sustained field productivity.
Operators should consider the combine’s transport dimensions when planning road moves, confirming permits if oversized headers are attached. Field operation benefits from balancing header width with terrain and crop density to optimize harvesting speed and minimize losses.