John Deere 6600 Combine Parts
The John Deere 6600 combine, manufactured from 1972 to 1978, was a popular and reliable workhorse for many farmers. Powered by a robust John Deere diesel engine producing around 105 horsepower, it offered header widths up to 20 feet, making it suitable for various field sizes. Its conventional separator design provided efficient threshing and separation, establishing the 6600 as a valued machine in grain harvesting.
The John Deere 6600 combine was introduced in 1972 and remained in production until 1978. It was designed as a versatile and dependable combine for small to medium-sized farms. The 6600 is powered by a John Deere 404 cubic inch (6.6L) diesel engine, producing approximately 105 horsepower. Its conventional threshing system features a 40-inch wide cylinder and walkers for grain separation. The grain tank capacity is around 85 bushels. The unloading auger is a standard speed auger which unloaded at around 30-40 bu/min. Available header widths ranged from 13 to 20 feet, accommodating different crop and field conditions. Optional equipment included straw chopper and spreader attachments to manage residue. The cab offered basic controls and visibility for operator comfort. The 6600 was well-regarded for its ability to efficiently harvest wheat, soybeans, and corn in various field conditions.
Specifications
| Engine | John Deere 404 CID 105 HP Diesel |
|---|---|
| Separator Type | Conventional - 40-inch Cylinder |
| Grain Tank | 85 bushels |
| Unloading Rate | 30-40 bu/min |
| Header Widths | 13-20 ft |
| Fuel Capacity | 55 gallons |
| Weight | Approx. 13,000 lbs |
| Years Produced | 1972-1978 |
Maintenance Tips
- Concave Adjustment: Regularly check and adjust the concave clearance to ensure proper threshing and minimize grain damage. Consult the operator's manual for recommended settings based on the crop being harvested.
- Belt and Chain Tension: Inspect all belts and chains for wear and proper tension. Loose or worn belts/chains can cause slippage, reduced performance, and potential damage.
- Sieve and Chaffer Cleaning: Clean the sieves and chaffer regularly to prevent buildup of debris, which can reduce cleaning efficiency and increase grain loss.
- Bearing Greasing: Lubricate all bearings according to the manufacturer's recommendations. Proper lubrication extends bearing life and prevents premature failure. Pay close attention to header bearings, as these are often exposed to dust and moisture.
History & Background
The John Deere 6600 combine was introduced in 1972 as a successor to earlier models and aimed to provide a more efficient and reliable harvesting solution. It offered improvements in engine power and header width. The 6600's robust design and performance contributed to its popularity and cemented its place in the history of John Deere combines.
Frequently Asked Questions
What engine is in the John Deere 6600?
The John Deere 6600 is powered by a John Deere 404 cubic inch (6.6L) diesel engine, producing approximately 105 horsepower.
What is the grain tank capacity on a 6600?
The grain tank capacity on a John Deere 6600 is approximately 85 bushels, and the unloading rate is around 30-40 bushels per minute.
What type of separator does the 6600 have?
The John Deere 6600 utilizes a conventional separator system, featuring a 40-inch wide cylinder and walkers for grain separation.
What are common parts needed for the 6600?
Commonly needed parts for the John Deere 6600 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. These are wear parts that need periodic replacement to maintain optimal performance.

AT21136 - Flanged) Thrust (.030" Bearing
SKU: AT21136
6 in stock

AT21134 - Flanged) Thrust (.020" Bearing
SKU: AT21134
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AT21132 - Flanged) Thrust (.010" Bearing
SKU: AT21132
37 in stock

AT21119 - Connecting Rod (.020") Bearing
SKU: AT21119
9 in stock

AT21117 - Connecting Rod (.010") Bearing
SKU: AT21117
14 in stock

AT10123 - Connecting Rod (Std) Bearing
SKU: AT10123
Out of stock

AR98850 - O-Ring Kit
SKU: AR98850
139 in stock

AR92893 - Rear Crankshaft W/ Wear Sleeve Seal
SKU: AR92893
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AR89564 - Pencil Injector
SKU: AR89564
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AR86981 - Connecting Rod
SKU: AR86981
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AR77752 - Thrust (.030") Bearing
SKU: AR77752
7 in stock

AR77751 - Thrust (.020") Bearing
SKU: AR77751
2 in stock

AR77750 - Thrust (.010") Bearing
SKU: AR77750
47 in stock

AR77748 - Thrust (Std) Bearing
SKU: AR77748
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AR77747 - Thrust (Std) Washer Set
SKU: AR77747
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AR74817 - Main (.020") Bearing
SKU: AR74817
60 in stock

AR74816 - Main (.010") Bearing
SKU: AR74816
95 in stock

AR74814 - Main (Std) Bearing
SKU: AR74814
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AR74665 - Injector
SKU: AR74665
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AR70987 - Turbocharger
SKU: AR70987
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AR67942 - Front Crankshaft Seal
SKU: AR67942
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AR65507 - Liner Sealing Ring Kit
SKU: AR65507
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AR65502 - Piston Rings
SKU: AR65502
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AR63940 - Upper Gasket Set
SKU: AR63940
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