John Deere 9660 Combine Parts

9660 parts and accessories

The John Deere 9660 combine, produced from 2005 to 2010, offered farmers a blend of power and reliability. Boasting a John Deere PowerTech engine with approximately 325 horsepower and header widths up to 30 feet, this combine provided efficient harvesting. Its advanced separator system, whether conventional or rotary (depending on the model sub-designation), and high grain tank capacity made it a popular choice for medium to large-scale grain operations.

The John Deere 9660 was part of the 60 Series combines, built from 2005 to 2010. It was designed to deliver increased performance and productivity compared to previous models. The heart of the 9660 is a John Deere PowerTech 9.0L 6-cylinder diesel engine, producing approximately 325 horsepower. This engine provides ample power for threshing and separating grain in demanding conditions. Depending on the variant, separation was achieved by either a conventional cylinder and walker system (9660 STS) or an Advanced Power Separation (APS) rotary system (9660 STS). The grain tank capacity is around 300 bushels, allowing for extended harvesting time before unloading. An unloading auger with a rate of approximately 3.0 bushels per second ensures quick and efficient grain transfer. The 9660 could accommodate a variety of header widths, ranging from 20 to 30 feet, depending on the crop and field conditions. Options included a fine-cut chopper and spreader for residue management. The cab featured improved ergonomics, enhanced visibility, and advanced monitoring systems for operator comfort and control. It excelled in harvesting a range of crops including wheat, corn, soybeans, and other small grains.

Specifications

Engine	John Deere 9.0L 325 HP Diesel
Separator Type	Rotary - 30-inch diameter rotor
Grain Tank	300 bushels
Unloading Rate	3.0 bu/min
Header Widths	20-30 ft
Fuel Capacity	225 gallons
Weight	33,000 lbs
Years Produced	2005-2010

Maintenance Tips

Concave Adjustment: Regularly inspect and adjust concave clearance according to the crop being harvested. Proper concave settings minimize grain loss and damage.
Belt and Chain Tension: Check and maintain proper tension on all belts and chains. Loose belts and chains can slip, causing reduced performance and potential damage.
Sieve and Chaffer Cleaning: Clean the sieves and chaffer regularly to remove debris and ensure proper airflow. Clogged sieves reduce cleaning efficiency and increase grain loss.
Bearing Greasing: Grease all bearings according to the manufacturer's recommendations. Proper lubrication extends bearing life and prevents premature failure.

History & Background

The John Deere 9660 was introduced in 2005 as part of the 60 Series combine lineup. It represented an evolution in combine technology, offering improved engine power, larger grain tank capacity, and enhanced operator comfort compared to its predecessors. It quickly became a popular model for farmers seeking a reliable and efficient harvesting solution.