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.

JD8947 - Bearing
SKU: JD8947
273 in stock

JD8524 - Ball Bearing
SKU: JD8524
95 in stock
JD8257 - Bearing Cup
SKU: JD8257
250 in stock

JD8237 - Bearing Cup
SKU: JD8237
250 in stock
AT23189 - Ball Bearing
SKU: AT23189
Out of stock

AH89023 - Oil Seal
SKU: AH89023
60 in stock

RE16495 - Connecting Rod
SKU: RE16495
27 in stock
RE13255 - GASKET SET
SKU: RE13255
6 in stock

R98062 - Intake (Std) Valve
SKU: R98062
76 in stock

R97490 - Intake (.015") Valve
SKU: R97490
77 in stock

R97351 - Flywheel Housing Gasket
SKU: R97351
24 in stock

R97344 - Pan Gasket
SKU: R97344
56 in stock

R97342 - Pan Gasket
SKU: R97342
143 in stock
R91889 - Valve (12 halves) Lock
SKU: R91889
7368 in stock

R91880 - Head (6 Cyl.) Gasket
SKU: R91880
22 in stock

R90692 - Exhaust (Std) Valve
SKU: R90692
64 in stock

R90648 - Cylinder Block Plate Gasket
SKU: R90648
12 in stock

R89224 - Intake (.015") Valve
SKU: R89224
10 in stock

R85687 - Exhaust Valve (Std) Insert
SKU: R85687
76 in stock

R83071 - Intake (Std) Valve
SKU: R83071
15 in stock

R83021 - Exhaust Manifold Gasket
SKU: R83021
2162 in stock

R80033 - Connecting Rod (2.750" Long) Capscrew
SKU: R80033
131 in stock

R79626 - EXHAUST (.015") VALVE
SKU: R79626
10 in stock

R79625 - Exhaust (.003") Valve
SKU: R79625
228 in stock
