CNU-1

International Harvester CNU-1 McCormick Corn Unit Combine Harvester (Catalog 1958)

The International Harvester CNU-1 McCormick Corn Unit, as featured in the 1958 International Harvester catalog, is a testament to the technological advancements and farming efficiency of the mid-20th century. This combine harvester was engineered to optimize corn harvesting, ensuring maximum productivity and minimal grain loss.

The CNU-1 McCormick Corn Unit boasts a powerful and efficient engine, designed to deliver superior performance and fuel economy. The engine is coupled with a robust transmission system, enabling the combine to navigate through various terrains with ease and adapt to varying crop conditions.

The corn header of the CNU-1 is meticulously designed for efficient corn harvesting. It features adjustable cutting plates, allowing farmers to fine-tune the header settings according to the crop maturity and growing conditions. The header also includes a unique crop flow system, which ensures a consistent flow of corn to the threshing drum, reducing grain loss and improving overall harvesting efficiency.

The threshing system in the International Harvester CNU-1 is engineered for optimal grain separation and purity. It incorporates a high-capacity threshing drum with adjustable rotor speed, enabling farmers to tailor the threshing process to their specific corn crop. The threshing drum is also equipped with adjustable concaves, which can be fine-tuned to ensure consistent grain separation and minimize grain damage.

The grain tank in the CNU-1 has a generous capacity, allowing for extended harvesting periods before the need for unloading. The tank is also designed with a clean-out system, making grain tank emptying a quick and efficient process.

Additional features of the International Harvester CNU-1 McCormick Corn Unit include adjustable engine and header speed, a comfortable and spacious operator's cab, and easy access to maintenance points. These features contribute to the combine's ease of operation, improved productivity, and reduced downtime.

The International Harvester CNU-1 McCormick Corn Unit, as presented in the 1958 catalog, represents a significant leap forward in corn harvesting technology. This combine harvester offers farmers the ability to efficiently and effectively harvest their corn crops, while minimizing grain loss and maximizing productivity. With its powerful engine, versatile threshing system, and user-friendly design, the CNU-1 is an essential piece of equipment for any modern farming operation.

A Retrospective Analysis of the International Harvester CNU-1 McCormick Corn Unit Combine (1958)

The International Harvester CNU-1 McCormick Corn Unit Combine, introduced in the 1958 catalog, represents an essential milestone in agricultural technology. This analysis will discuss the pros and cons of purchasing this combine based on historical data.

1. Improved Threshing Performance: The CNU-1 featured a larger threshing drum and improved rotor design, resulting in faster and more efficient threshing. This improvement enabled farmers to harvest larger acreages in a shorter time frame.

2. Enhanced Cleaning Capabilities: The CNU-1's cleaning system was more effective than its predecessors. The combination of a larger sieve table and improved fan design resulted in cleaner grain.

3. Increased Capacity: The CNU-1's grain tank had a greater capacity than earlier models, reducing the need for frequent unloading.

4. Improved Comfort and Convenience: The CNU-1 offered a more spacious and comfortable cab, as well as improved ergonomics, which made long hours spent operating the combine more bearable.

1. Higher Cost: The CNU-1 was a significant investment, with a higher purchase price than earlier models. This higher cost might have been a barrier for some farmers.

2. Increased Maintenance: The larger size and more complex design of the CNU-1 required more frequent and extensive maintenance. This increased labor and financial costs for farmers.

3. Greater Fuel Consumption: The CNU-1's larger engine and more powerful components led to increased fuel consumption, adding to operating costs.

4. Requires a Larger Tractor: Due to its size and weight, the CNU-1 required a more powerful tractor for towing, which was an additional expense for farmers.

The International Harvester CNU-1 McCormick Corn Unit Combine represented a significant leap forward in agricultural technology in the late 1950s. Its improved threshing performance, enhanced cleaning capabilities, increased capacity, and improved comfort and convenience were major advantages. However, its higher cost, increased maintenance, greater fuel consumption, and requirement for a larger tractor were notable disadvantages.

The decision to purchase the International Harvester CNU-1 McCormick Corn Unit Combine should be based on a farmer's specific needs and financial situation. If a farmer operates on a large scale and can afford the higher upfront and ongoing costs, the CNU-1's advanced features could lead to increased efficiency and productivity. However, for smaller farmers or those with limited financial resources, earlier models or other brands with similar features but lower costs might be more suitable. Ultimately, a thorough cost-benefit analysis should be conducted before making a decision.

Details:

Good overall condition, complete, 190 pages. Mccormick corn units for combines catalog CNU-1.

specifications heavymanualbooks:

• brand: International Harvester
• mpn: Cnu-1
• compatible equipment type: Harvester
• model year: 1958
• unit type: Unit
• country/region of manufacture: United States

seller heavymanualbooks:

• # reviews: 3413
• city: allenton, michigan
• rating: 100.0%

shipping heavymanualbooks:

• carrier: usps
• class: standard
• service: usps ground advantage
• transit: 4-10 days
• type: fixed

offer heavymanualbooks:

• prices: $3.75–$19.96
• item condition:
  • Acceptable
  • Good
• availability: in stock
• sold #: 13
• started: august 23, 2025
• best offers: true
• options: ship-to-home
• in stock #: 5

payments heavymanualbooks:

• other
• credit card: mastercard
• wallet: google-pay

general heavymanualbooks:

• category: Business & Industrial > Equipment, Attachments > Parts Accessories > Heavy Manuals Books

returns heavymanualbooks:

• method: money back
• paid by: seller
• policy: returns accepted
• time: 30 days

Related To:

• RAP76150: MANUAL, Reliable Aftermarket Parts Our Name Says It All
• RAP73300: MANUAL TRACTOR, Reliable Aftermarket Parts Our Name Says It All
• IH-50: MANUAL, Reliable Aftermarket Parts Our Name Says It All
• IH-37: MANUAL, International
• GSS-1297: RIBBON MANUAL, International Harvester
• 440-441-442: PLANTER MANUAL, Mccormick
• GSS-1311: MANUAL PUMP, International Harvester
• C-201: MANUAL, Reliable Aftermarket Parts Our Name Says It All
• U-264-6: , International
• PU-41: , International
• IH-8: TRACTOR MANUAL, Vintage