John Deere 9400 Combine Parts

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The John Deere 9400 combine, produced from 1989 to 1995, was a popular choice for farmers seeking a reliable and efficient conventional combine. Equipped with a John Deere engine producing approximately 225 horsepower, it offered ample power for harvesting. Available header widths ranged up to 30 feet, allowing for efficient coverage. Its conventional separator system provided excellent grain quality and separation.

The John Deere 9400 combine harvester was introduced in 1989 and remained in production until 1995, quickly establishing itself as a workhorse on farms across North America. Powered by a John Deere 6.8L 6-cylinder diesel engine rated at approximately 225 horsepower, the 9400 provided sufficient power for a range of harvesting conditions. Its conventional threshing system features a large cylinder and concave, delivering high-quality grain separation and minimal grain damage. The grain tank capacity is around 170 bushels, and the unloading auger could unload at a rate of approximately 45 bushels per minute. Available header widths ranged from 13 to 30 feet, allowing farmers to tailor the machine to their specific field sizes and crop types. Chopper and spreader options were available to manage residue efficiently. The cab offered a comfortable operating environment, though it lacked some of the advanced features of later models. The 9400 was particularly well-suited for harvesting wheat, soybeans, and corn in moderate to good conditions.

Specifications

Engine	John Deere 6.8L 225 HP Diesel
Separator Type	Conventional - 43 inch cylinder width
Grain Tank	170 bushels
Unloading Rate	45 bu/min
Header Widths	13-30 ft
Fuel Capacity	80 gallons
Weight	Approx. 20,000 lbs
Years Produced	1989-1995

Maintenance Tips

Concave Adjustment: Regularly check and adjust the concave clearance based on the crop being harvested to optimize threshing performance and minimize grain damage.
Belt and Chain Tension: Inspect and adjust belt and chain tension regularly to prevent slippage and ensure smooth operation of all combine components.
Sieve and Chaffer Cleaning: Clean the sieves and chaffer 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 prevent premature wear and ensure smooth operation of rotating components. Pay close attention to the header, threshing, and cleaning system bearings.

History & Background

The John Deere 9400 was introduced in 1989 as part of the '00' series combines, succeeding earlier models like the 7720. It represented an evolution in conventional combine design, offering improved performance and reliability compared to its predecessors. While not a revolutionary machine, it served as a dependable and cost-effective option for many farmers during its production run.

Frequently Asked Questions

What engine is in the John Deere 9400?

The John Deere 9400 is powered by a John Deere 6.8L 6-cylinder diesel engine, producing approximately 225 horsepower.

What is the grain tank capacity on a 9400?

The grain tank capacity of the John Deere 9400 is approximately 170 bushels, and it has an unloading rate of about 45 bushels per minute.

What type of separator does the 9400 have?

The John Deere 9400 utilizes a conventional separator system featuring a 43-inch wide cylinder and concave. This system provides efficient grain separation and minimizes grain damage.

What are common parts needed for the 9400?

Common wear parts for the John Deere 9400 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. Regular replacement of these parts ensures optimal performance and minimizes downtime during harvest.

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