Case IH 1666 Combine Parts
1666 parts and accessories
The Case IH 1666 combine, manufactured from 1985-1992, was a popular choice for farmers seeking a reliable and versatile machine. Boasting a robust 165 HP engine and available header widths up to 30 feet, the 1666 utilized a conventional cylinder/walker separation system. Its reputation for simplicity and durability made it a workhorse in grain harvesting operations.
Introduced in 1985, the Case IH 1666 was a mid-sized combine designed to offer a balance of performance and affordability. Powering the 1666 was an International Harvester DT-402 naturally aspirated diesel engine, producing 165 horsepower with a displacement of 402 cubic inches. The combine features a conventional threshing system with a 30-inch diameter cylinder and six straw walkers for separation. Its grain tank held approximately 185 bushels, and unloading speeds reached around 80 bushels per minute. Available header widths ranged from 13 to 30 feet, accommodating various field sizes and crop types. Optional features included a straw chopper or spreader, and the cab offered basic operator comfort with controls for machine functions. The Case IH 1666 performed exceptionally well in harvesting wheat, soybeans, corn, and other small grains, gaining a reputation for its dependability and ease of maintenance.
Specifications
| Engine | International Harvester DT-402 165 HP 402ci Diesel |
|---|---|
| Separator Type | Conventional - 30-inch Cylinder |
| Grain Tank | 185 bushels |
| Unloading Rate | 80 bu/min |
| Header Widths | 13-30 ft |
| Fuel Capacity | 95 gallons |
| Weight | 17,500 lbs |
| Years Produced | 1985-1992 |
Maintenance Tips
- Regularly inspect and adjust the concave clearance to optimize threshing performance and minimize grain loss.
- Check and maintain proper tension on all belts and chains, replacing them as needed to prevent breakdowns during harvest.
- Clean the sieves and chaffer frequently to remove debris and ensure efficient grain separation.
- Grease all bearings according to the manufacturer's recommendations to prevent premature wear and extend component life. Consider performing pre-season bearing maintenance.
History & Background
The Case IH 1666 was introduced in 1985 as part of the 1600 series combines. It offered a blend of traditional combine design with improvements in capacity and efficiency over previous models. The 1666 played a significant role in providing farmers with a reliable harvesting solution during its production years.
Frequently Asked Questions
What engine is in the Case Ih 1666?
The Case IH 1666 is powered by an International Harvester DT-402 naturally aspirated diesel engine producing 165 horsepower with a displacement of 402 cubic inches.
What is the grain tank capacity on a 1666?
The Case IH 1666 has a grain tank capacity of approximately 185 bushels, with an unloading rate of about 80 bushels per minute.
What type of separator does the 1666 have?
The Case IH 1666 utilizes a conventional threshing system. It has a 30-inch diameter cylinder and six straw walkers for separation.
What are common parts needed for the 1666?
Common wear parts for the Case IH 1666 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. Regular replacement of these parts is essential for maintaining optimal performance.

144705A1 - Straw Chopper (RH) Support Assy
SKU: 144705A1
8 in stock

1319269C1 - Combine Beater Blade
SKU: 1319269C1
33 in stock

1319266C1 - Discharge Beater Hub Assy
SKU: 1319266C1
24 in stock

1315269C2 - Idler (V-belt) Pulley
SKU: 1315269C2
31 in stock

1315264C1 - Straw Chopper Drive Pulley
SKU: 1315264C1
30 in stock

1302764C1 - Straw Chopper Concave; Single Blade
SKU: 1302764C1
5 in stock

1302763C1 - Straw Chopper Concave; Double Blade
SKU: 1302763C1
28 in stock

1302175C2 - Discharge Beater Shaft
SKU: 1302175C2
18 in stock

128440A1 - Straw Spreader Shaft
SKU: 128440A1
25 in stock

G10642 - Needle; Chaffer Drive Hanger Support Bearing
SKU: G10642
77 in stock

B12170 - Shaker Shaft/ Elevator Drive Jackshaft Rachet
SKU: B12170
199 in stock

87741795 - Chaffer Front Hanger Support
SKU: 87741795
12 in stock

87672100 - Shoe Arm
SKU: 87672100
73 in stock

87671724 - Rear Chaffer Hanger Arm Assy
SKU: 87671724
Out of stock

87671723 - Shoe Hanger; Front Arm Assembly
SKU: 87671723
39 in stock

87538600 - Rubber Bushing
SKU: 87538600
868 in stock

87522943 - Outer Fan Drive Fixed Pulley
SKU: 87522943
10 in stock

87430518 - Shaker Shaft & Inclined Delivery Auger Bearing Flange
SKU: 87430518
73 in stock

87376924 - Shaker Shaft / Chaffer Drive Arm Bushing
SKU: 87376924
615 in stock

87318100 - Shaker Shaft (RH) Cam
SKU: 87318100
15 in stock

87313325 - Chaffer Lever Assy
SKU: 87313325
27 in stock

87299946 - Heavy Duty Bushing; Sieve Kit
SKU: 87299946
66 in stock

84435858 - Shaker Shaft Pitman Bearing
SKU: 84435858
75 in stock

61801C1 - Bearing Cup
SKU: 61801C1
214 in stock
