John Deere T660 Combine Parts
T660 parts and accessories
The John Deere T660 combine, produced from approximately 2012 to 2015, offered farmers a powerful and efficient grain harvesting solution. Boasting around 360 engine horsepower and available with header widths up to 40 feet, the T660 featured a robust conventional threshing and separating system. Its reliability and high throughput made it a popular choice for harvesting wheat, soybeans, and other grains.
The John Deere T660 was introduced as part of the T-Series combine lineup, manufactured approximately from 2012 to 2015. Powering the T660 is a John Deere PowerTech 9.0L 6-cylinder diesel engine, delivering approximately 360 horsepower. This engine provides ample power for threshing and separating high volumes of grain. The T660 utilizes a conventional threshing system featuring a high-capacity cylinder and concave. Grain tank capacity is rated at approximately 300 bushels, and the unloading auger achieves a rate of around 3.3 bushels per second (200 bu/min), minimizing downtime during harvest. Available header widths range from 25 to 40 feet, catering to various field sizes and crop types. The T660 offered options for both straw choppers and spreaders to manage residue efficiently. The combine's cab is designed for operator comfort and visibility, featuring advanced controls and monitoring systems. The T660 excels at harvesting small grains like wheat and barley, as well as soybeans and other row crops.
Specifications
| Engine | John Deere PowerTech 9.0L 360 HP Diesel |
|---|---|
| Separator Type | Conventional - 66-inch wide cylinder |
| Grain Tank | 300 bushels |
| Unloading Rate | 200 bu/min |
| Header Widths | 25-40 ft |
| Fuel Capacity | 210 gallons |
| Weight | Approximately 33,000 lbs |
| Years Produced | 2012-2015 (approximate) |
Maintenance Tips
- Concave Adjustment: Regularly inspect and adjust concave clearance to ensure proper threshing without excessive grain damage. Refer to the operator's manual for recommended settings based on crop type and conditions.
- Belt and Chain Tension: Check belt and chain tension throughout the combine regularly, especially the header drive belt and feeder house chain. Loose belts and chains can cause slippage, reduced performance, and premature wear.
- Sieve and Chaffer Cleaning: Clean sieves and chaffers frequently to remove debris and prevent plugging. This ensures optimal cleaning performance and reduces grain loss. Use compressed air or a brush to remove accumulated material.
- Bearing Greasing: Follow the recommended greasing schedule in the operator's manual for all bearings. Proper lubrication extends bearing life and prevents costly breakdowns.
History & Background
The John Deere T660 was introduced to provide farmers with a high-capacity, conventional combine option. While not a revolutionary design change, it represented an evolution of Deere's conventional combine technology, focusing on increased throughput and efficiency. The T660 played a significant role in meeting the demands of larger farming operations.
Frequently Asked Questions
What engine is in the John Deere T660?
The John Deere T660 is equipped with a John Deere PowerTech 9.0L 6-cylinder diesel engine, producing approximately 360 horsepower.
What is the grain tank capacity on a T660?
The grain tank capacity of the John Deere T660 is approximately 300 bushels, with an unloading rate of around 200 bushels per minute (3.3 bu/sec).
What type of separator does the T660 have?
The John Deere T660 utilizes a conventional threshing and separating system. It features a 66-inch wide cylinder and concave for effective grain separation.
What are common parts needed for the T660?
Common wear parts for the T660 include concaves, rasp bars, belts (header, feeder house, separator), chains (feeder house, elevator), bearings, auger fingers (unloading auger, grain tank), and sickle sections (header).

H174509 - Slip Clutch Hub
SKU: H174509
34 in stock

H170967 - Clean Grain Elevator Gearcase Shaft
SKU: H170967
13 in stock

H164796 - Upper Clean Grain Elevator Sprocket
SKU: H164796
76 in stock

H164212 - Unloader Drive Jackshaft
SKU: H164212
17 in stock

H161342 - Handle Lever
SKU: H161342
104 in stock

H157043 - Upper Clean Grain Elevator Pin
SKU: H157043
49 in stock

H144667 - Elevator Chain Paddle
SKU: H144667
738 in stock

H142188 - Auger Wood Blocks
SKU: H142188
443 in stock

H137919 - Clean Grain Loading Auger Bushing
SKU: H137919
59 in stock

H137916 - Clean Grain Loading Auger Shim
SKU: H137916
49 in stock

H137215 - Shoe Auger Drive Gear
SKU: H137215
770 in stock

H135475 - Auger Drive Bearing
SKU: H135475
182 in stock

H135235 - Elevator Chain Paddle
SKU: H135235
260 in stock

H134760 - Upper Sheave; Clean Grain Elevator Hub
SKU: H134760
108 in stock

H133143 - Lower Clean Grain Elevator Sprocket
SKU: H133143
681 in stock

H133026 - Unloading Auger Countershaft Drive Hub
SKU: H133026
4 in stock

H131675 - Grain Tank Window
SKU: H131675
11 in stock

H131639 - Upper Tailings Auger Housing Paddle
SKU: H131639
10 in stock

H130137 - Vertical Unloader Gear Case Housing
SKU: H130137
Out of stock

H129935 - Unloader Drive Sheave
SKU: H129935
3 in stock

H129934 - Unloading & Separator Drive Engine Gearcase Shaft
SKU: H129934
16 in stock

H129653 - Vertical Auger Gear Case Drive Shaft
SKU: H129653
4 in stock

H128861 - "Donut" Auger Tube
SKU: H128861
28 in stock

H116292 - Unloading Auger Splined Coupling
SKU: H116292
10 in stock
