John Deere 7701 Combine Parts

7701 parts and accessories

The John Deere 7701 combine harvester, manufactured from 1978 to 1984, was known for its robust conventional separation system. Powered by a John Deere diesel engine producing approximately 165 horsepower, it offered header widths up to 20 feet. Its reliability and efficient threshing made it a popular choice for farmers harvesting wheat, soybeans, and corn during its production run.

The John Deere 7701 was introduced in 1978 as an update to previous John Deere combine models, offering increased capacity and improved performance. It was produced until 1984. The 7701 is powered by a John Deere 6466A 7.6L (466 cu in) 6-cylinder diesel engine, delivering around 165 horsepower. It features a conventional cylinder and concave threshing system with a 52-inch wide cylinder. The grain tank capacity is approximately 135 bushels, with an unloading auger capable of unloading at a rate of around 35 bushels per minute. Available header widths ranged from 13 to 20 feet, offering versatility for various field conditions. While chopper and spreader options were available, their specific configurations varied based on the model year and dealer customization. The cab featured basic controls and instrumentation for monitoring combine performance. The 7701 was well-suited for harvesting a variety of crops, including wheat, soybeans, corn, and other small grains.

Specifications

Engine	John Deere 6466A 165 HP 7.6L Diesel
Separator Type	Conventional - 52-inch Cylinder Width
Grain Tank	135 bushels
Unloading Rate	35 bu/min
Header Widths	13-20 ft
Fuel Capacity	65 gallons
Weight	Approx. 16,500 lbs
Years Produced	1978-1984

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 all belts and chains for wear and proper tension. Loose or worn belts and chains can lead to slippage and reduced performance.
Sieve and Chaffer Cleaning: Clean the sieves and chaffer regularly to remove debris and ensure proper air flow for efficient grain separation.
Bearing Greasing: Grease all bearings according to the manufacturer's recommendations to prevent premature wear and failure. Pay special attention to bearings in high-stress areas like the header and threshing cylinder.
Pre-Season Preparation: Before each harvest season, thoroughly inspect the combine, checking for worn parts, leaks, and any other potential issues. Replace worn parts and perform necessary repairs to ensure reliable operation during the season.

History & Background

The John Deere 7701 was introduced in 1978 to replace earlier models in the John Deere combine lineup. While it didn't receive major redesigns during its production run, incremental improvements were made based on farmer feedback. The 7701 represented a solid and dependable conventional combine during its time, before rotary combines gained widespread adoption.

Frequently Asked Questions

What engine is in the John Deere 7701?

The John Deere 7701 is powered by a John Deere 6466A 6-cylinder diesel engine, producing approximately 165 horsepower and displacing 7.6 liters (466 cubic inches).

What is the grain tank capacity on a 7701?

The grain tank capacity on the John Deere 7701 is approximately 135 bushels, and it has an unloading rate of around 35 bushels per minute.

What type of separator does the 7701 have?

The John Deere 7701 utilizes a conventional threshing system with a 52-inch wide cylinder and concave arrangement for grain separation.

What are common parts needed for the 7701?

Common wear parts for the John Deere 7701 include concaves, rasp bars, belts, chains, bearings, auger flighting and fingers, and sickle sections for the header. Check these components regularly for wear and replace as needed to maintain optimal performance.

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