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).

CE18278 - Horizontal Unloading Auger Drive Gear Case Shaft-Pinion
SKU: CE18278
32 in stock

AN15237 - Idler Assy
SKU: AN15237
84 in stock

AH98118 - Seal
SKU: AH98118
26 in stock

AH97031 - Flat Idler
SKU: AH97031
114 in stock

AH96585 - Ball Bearing
SKU: AH96585
25 in stock

AH94661 - Cup & Cone Bearing Set
SKU: AH94661
129 in stock

AH90963 - Shaft Seal Assy
SKU: AH90963
123 in stock

AH220872 - Moisture Sensor Actuator
SKU: AH220872
Out of stock

AH207172 - Clean Grain Elevator
SKU: AH207172
6 in stock

AH206131 - Unloading Auger Drive w/ Bearing Idler Sprocket
SKU: AH206131
13 in stock

AH202881 - Rear Tank Cross Auger
SKU: AH202881
22 in stock

AH202875 - Front Tank Cross Auger
SKU: AH202875
21 in stock

AH166639 - Offset Link
SKU: AH166639
59 in stock

AH166638 - Attachment Chain Link
SKU: AH166638
70 in stock

AH164349-WP - Mass Flow Sensor Bracket Wear Plate
SKU: AH164349-WP
122 in stock

AH163056 - Bearing Assy
SKU: AH163056
18 in stock

AH162230 - Loading Auger Gear Kit
SKU: AH162230
18 in stock

AH162153 - Lower Clean Grain Auger
SKU: AH162153
17 in stock

AH155812 - Unloading Auger Countershaft Drive w/ Bushing Sheave Hub Assembly
SKU: AH155812
118 in stock

AH154068 - Clean Grain Elevator (Perforated) Door Assembly
SKU: AH154068
1 in stock

AH146352 - Vertical Auger Lower Gear Case Sprocket
SKU: AH146352
7 in stock

AH140001 - Grain Tank Cross Auger Sprocket Assy
SKU: AH140001
15 in stock

AH139390 - Clean Grain; Solid w/ Protective Plate Door Assembly
SKU: AH139390
10 in stock

AH139387 - Lower Clean Grain Auger Trough (Perforated) Door
SKU: AH139387
4 in stock
