John Deere S785 Combine Parts

S785 parts and accessories

The John Deere S785 combine, manufactured starting in 2018, is a powerful rotary combine designed for high-capacity harvesting. Offering engine horsepower around 473 HP, it's compatible with a range of headers up to 45 feet wide. Its rotary separator design, coupled with advanced technology, made the S785 a popular choice for farmers seeking efficient and high-throughput grain harvesting.

The John Deere S785 combine was introduced as part of the S700 series, replacing earlier models and incorporating several key improvements. Production began in 2018 and continues today. The S785 is equipped with a John Deere PowerTech 13.5L engine, producing approximately 473 peak horsepower (353 kW) with a displacement of 824 cubic inches. It uses a single rotor separator system for efficient threshing and separation. The grain tank boasts a capacity of around 400 bushels, and the unloading auger system provides a fast unloading rate of up to 4.5 bushels per second (270 bu/min). Header widths range from 30 to 45 feet, accommodating various harvesting needs. Chopper and spreader options are available to manage residue effectively. The cab features advanced technology for monitoring and control, including the CommandARM console with GreenStar display. The S785 excels at harvesting a variety of crops, including corn, soybeans, wheat, and other small grains, due to its adaptable settings and high throughput capacity.

Specifications

Engine	John Deere PowerTech 13.5L 473 HP Diesel
Separator Type	Rotary - Single Rotor
Grain Tank	400 bushels
Unloading Rate	270 bu/min
Header Widths	30-45 ft
Fuel Capacity	300 gallons
Weight	Approximately 38,000 lbs
Years Produced	2018 - Present

Maintenance Tips

Concave Adjustment: Regularly check and adjust concave clearance based on the crop being harvested to optimize threshing and minimize grain damage.
Belt and Chain Tension: Inspect all belts and chains for proper tension and wear. Replace worn components promptly to prevent breakdowns during harvest.
Sieve and Chaffer Cleaning: Regularly clean the sieves and chaffer to ensure proper air flow and efficient grain cleaning. Debris buildup can reduce performance and increase grain loss.
Bearing Greasing: Lubricate all greaseable bearings according to the manufacturer's recommendations. Proper lubrication prevents premature wear and extends the life of critical components.

History & Background

The John Deere S785 was introduced in 2018 as part of the S700 series combines. This series represented a significant upgrade in harvesting technology and efficiency compared to previous models. The S785 combined power, capacity, and advanced features to meet the demands of modern farming operations.

Frequently Asked Questions

What engine is in the John Deere S785?

The John Deere S785 is equipped with a John Deere PowerTech 13.5L diesel engine, producing approximately 473 peak horsepower (353 kW).

What is the grain tank capacity on a S785?

The grain tank capacity on a John Deere S785 combine is approximately 400 bushels, with an unloading rate of around 270 bushels per minute.

What type of separator does the S785 have?

The John Deere S785 utilizes a single rotor separator system for threshing and separating grain. This rotary design provides high throughput capacity and efficient grain separation.

What are common parts needed for the S785?

Common wear parts for the John Deere S785 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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