Case IH 503 Combine Parts

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The Case IH 503 combine, a reliable workhorse manufactured in the late 1970s and early 1980s, delivered solid performance for farmers seeking dependable harvesting. Powered by a [~105] HP engine, it offered header widths up to [15] feet, enabling efficient harvesting of various crops. Its conventional separator system provided effective grain separation, making it a popular choice for smaller farms and custom harvesting operations.

The Case IH 503 was a key model in Case IH's combine lineup during its production years in the late 1970s and early 1980s. It provided a dependable option for farmers looking for a combine capable of handling various crops. The 503 was equipped with a [Case or International Harvester] engine, producing approximately [105] horsepower with a [~301] cubic inch displacement diesel. The threshing system utilized a conventional cylinder and concave design. The grain tank held around [95] bushels and unloaded at a rate of approximately [30] bushels per minute. Available header widths ranged up to [15] feet, suitable for smaller fields and diverse harvesting conditions. While not always equipped with advanced features, it could be configured with a chopper or spreader. The cab offered basic operator comfort and controls for efficient harvesting. The 503 was known for its versatility in harvesting wheat, soybeans, and corn, making it a popular choice among farmers who needed a machine that could handle multiple crops. Note that specifications can vary slightly based on the year and specific configuration of the machine.

Specifications

Engine	[Case or International Harvester] [105] HP [~301] CID Diesel
Separator Type	Conventional - [cylinder width ~30in]
Grain Tank	[95] bushels
Unloading Rate	[30] bu/min
Header Widths	[up to 15] ft
Fuel Capacity	[~38] gallons
Weight	[~11,000] lbs
Years Produced	[Late 1970s - Early 1980s]

Maintenance Tips

Regularly check and adjust the concave clearance to ensure optimal threshing performance and minimize grain loss.
Inspect and maintain proper tension on all belts and chains to prevent slippage and premature wear.
Clean the sieves and chaffer frequently to remove debris and ensure efficient grain separation.
Grease all bearings and lubrication points regularly, following the manufacturer's recommended schedule, to prevent premature failure.

History & Background

The Case IH 503 was introduced during a period of transition in combine harvester technology. As a conventional combine, it represented a continuation of established harvesting methods. It helped solidify Case IH's presence in the small to mid-sized farm market.