Case IH 1688 Combine Parts

1688 parts and accessories

The Case IH 1688 combine, produced from 1988 to 1994, was a workhorse on farms across North America. Powered by a robust engine producing around 235 HP, and capable of handling header widths up to 30 feet, this combine offered impressive performance. Its innovative rotary separator design quickly made it a favorite among farmers seeking increased harvesting efficiency and reduced grain loss compared to conventional combines.

The Case IH 1688 combine was introduced in 1988 as part of the Axial-Flow series, building upon the success of earlier models. It was produced until 1994. The 1688 is powered by an 8.3L Cummins engine, generating approximately 235 horsepower, providing ample power for demanding harvesting conditions. The Axial-Flow rotary system, featuring a single rotor, effectively threshes and separates grain, minimizing grain damage and maximizing throughput. Its grain tank capacity is around 300 bushels, and the unloading auger boasts an unloading rate of approximately 100 bushels per minute. Available header widths ranged from 15 to 30 feet, accommodating various field sizes and crop types. Optional features included a chopper and spreader for residue management. The cab offered improved comfort and visibility compared to previous models. The 1688 excels in harvesting a wide range of crops, including wheat, corn, soybeans, and other small grains, making it a versatile and reliable choice for farmers.

Specifications

Engine	8.3L Cummins 235 HP Diesel
Separator Type	Axial-Flow Rotary - Single Rotor
Grain Tank	300 bushels
Unloading Rate	100 bu/min
Header Widths	15-30 ft
Fuel Capacity	150 gallons
Weight	22,000 lbs
Years Produced	1988-1994

Maintenance Tips

Concave Adjustment: Regularly inspect and adjust the concave clearance to ensure optimal threshing performance and minimize grain damage. Refer to the operator's manual for recommended settings based on the crop being harvested.
Belt and Chain Tension: Check and maintain proper tension on all belts and chains. Loose belts or chains can slip, causing reduced performance and premature wear.
Sieve and Chaffer Cleaning: Regularly clean the sieves and chaffer to remove debris and ensure proper grain separation. Clogged sieves can lead to increased grain loss.
Bearing Greasing: Grease all bearings according to the manufacturer's recommendations. Proper lubrication is essential for preventing bearing failure and extending the lifespan of critical components.

History & Background

Introduced in 1988, the Case IH 1688 built upon the success of the Axial-Flow series with refinements to the rotor design and engine performance. It quickly became a popular choice for farmers seeking high-capacity harvesting and efficient grain separation. The 1688 is remembered as a key machine in the transition towards rotary combine technology, solidifying Case IH's position in the agricultural equipment market.

Frequently Asked Questions

What engine is in the Case Ih 1688?

The Case IH 1688 is powered by an 8.3L Cummins diesel engine, producing approximately 235 horsepower.

What is the grain tank capacity on a 1688?

The grain tank capacity on the Case IH 1688 is approximately 300 bushels. The unloading rate is around 100 bushels per minute.

What type of separator does the 1688 have?

The Case IH 1688 utilizes an Axial-Flow rotary separator system with a single rotor. This design provides efficient threshing and separation, minimizing grain damage.

What are common parts needed for the 1688?

Common wear parts for the Case IH 1688 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. Regular inspection and replacement of these parts can help maintain optimal harvesting performance.

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