Case IH 420 Combine Parts

420 parts and accessories

The Case IH 420 combine, manufactured from 1986-1992, offered reliable harvesting performance for a variety of crops. Powered by a robust 165 HP engine, it was available with header widths up to 20 feet. Its conventional separator design provided efficient grain separation, making it a popular choice for farmers seeking a dependable and straightforward combine.

The Case IH 420 combine harvester was a workhorse in the late 1980s and early 1990s, produced from 1986 to 1992. Under the hood, it featured an International Harvester DT-402 6.6L diesel engine, delivering approximately 165 horsepower. The 420 employed a conventional threshing system with a 43-inch wide cylinder and a walker bed, providing effective grain separation. It boasted a grain tank capacity of around 150 bushels and an unloading auger with a rate of approximately 60 bushels per minute. Available header widths ranged from 13 to 20 feet, allowing for adaptable harvesting in diverse field conditions. Chopper and spreader options were offered to manage residue effectively. The cab provided basic operator comfort and control. This combine excelled in harvesting small grains like wheat and soybeans, offering a blend of simplicity and performance that appealed to many farmers.

Specifications

Engine	International Harvester DT-402 165 HP 6.6L Diesel
Separator Type	Conventional - 43-inch cylinder width
Grain Tank	150 bushels
Unloading Rate	60 bu/min
Header Widths	13-20 ft
Fuel Capacity	80 gallons
Weight	16,500 lbs
Years Produced	1986-1992

Maintenance Tips

Concave Adjustment: Regularly check and adjust concave clearance according to the crop being harvested to optimize threshing performance and minimize grain damage.
Belt and Chain Tension: Inspect belt and chain tension frequently and adjust as needed to prevent slippage, premature wear, and potential breakdowns during operation.
Sieve and Chaffer Cleaning: Clean sieves and chaffers regularly to ensure proper airflow and efficient grain cleaning, preventing losses over the back of the combine.
Bearing Greasing: Follow the recommended greasing schedule for all bearings throughout the combine to maintain proper lubrication and extend component lifespan.

History & Background

The Case IH 420 combine was introduced in 1986 as part of Case IH's updated combine lineup following the merger of Case and International Harvester. It represented a refinement of earlier IH designs and offered a reliable and affordable option for farmers. While not revolutionary, it was a solid performer that helped Case IH establish itself in the competitive combine market.