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).

AH138230 - Sieve to Grain Pan Link
SKU: AH138230
107 in stock

AH136497 - Dual Lip Seal Assy.
SKU: AH136497
44 in stock

AH131218 - Bottom; Round Hole Sieve
SKU: AH131218
11 in stock

AH131216 - Bottom; Round Hole Sieve
SKU: AH131216
1 in stock

AH131214 - Pre Cleaner Sieve Assy
SKU: AH131214
3 in stock

AH128384 - Fan Drive Speed Shaft
SKU: AH128384
58 in stock

AH125975 - Cleaning Shoe Shaft Bearing
SKU: AH125975
707 in stock

AH125970 - Chaffer Frame/Shaker Pan Arm-RH
SKU: AH125970
24 in stock

AH125969 - Chaffer Frame/Shaker Pan Arm (LH)
SKU: AH125969
40 in stock

AH125490 - Clutch; Seperator Drive Disc
SKU: AH125490
62 in stock

AH125201 - Chaffer Frame Bushing
SKU: AH125201
159 in stock

AH125200 - Chaffer / Sieve Bushing
SKU: AH125200
1039 in stock

H151484 - Concave Link
SKU: H151484
92 in stock

H148241 - Cylinder Drive Intermediate Shaft
SKU: H148241
33 in stock

H148131 - Primary Countershaft Bushing
SKU: H148131
205 in stock

H147788 - Beater Blade
SKU: H147788
359 in stock

H145955 - Dual Range Cylinder Drive Half Sheave
SKU: H145955
92 in stock

H145638 - Torque; Concave Shaft
SKU: H145638
7 in stock

H132057 - Cylinder Spike; w/ Hardware Tooth
SKU: H132057
3760 in stock

H115755 - Primary Countershaft Inner Sheave-Half
SKU: H115755
13 in stock

AH206756 - Roll Pin & Washer Pin Concave Insert - C/W Spring
SKU: AH206756
596 in stock

AH141973 - Dual Range Cylinder Drive (Intermediate) Sheave-Half
SKU: AH141973
20 in stock

AH141820 - Primary Countershaft & Slow Speed Cylinder Drive Sheave-Half
SKU: AH141820
7 in stock

AH133157 - Concave (LH) Cam
SKU: AH133157
24 in stock
