International Harvester 135 Diesel Engine

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The International Harvester (IH) 135 diesel engine, introduced in the late 1950s, marked a significant advancement in agricultural machinery. As part of IH's Hundred Series, the 135 engine was designed to provide reliable power for a range of farming applications.
Engine Specifications

• Model: International Harvester FDD-74
  
• Type: 2-cylinder, liquid-cooled diesel
  
• Displacement: 74.3 cubic inches (1.2 liters)
  
• Bore/Stroke: 3.44 x 4.00 inches (87 x 102 mm)
  
• Compression Ratio: 19:1
  
• Rated Power: 20 horsepower (14.9 kW)
  
• Rated RPM: 1,900 RPM
  
• Coolant Capacity: 8.7 quarts (8.2 liters)
  
• Fuel Tank Capacity: 10 gallons (37.9 liters)
  
• Transmission: 6-speed gear
  
• Wheelbase: 69.3 inches (176 cm)
  
• Weight: 2,297 to 2,381 pounds (1,041 to 1,081 kg)
  
• Tires: Front: 5.00-15; Rear: 8-24
  
• Cooling System: Liquid-cooled engine with tubular-plate cooler and thermostat
  
• Charging System: Generator
  
• Electrical System: 12V, negative ground
  

Historical Context
The IH 135 engine was part of the Farmall F-135 tractor, produced from 1958 to 1960. This period saw significant innovation in tractor design, with the Hundred Series introducing more powerful and efficient engines to meet the growing demands of modern agriculture. The F-135 was a row-crop tractor, designed for versatility and durability in various farming tasks.
Legacy and Impact
The introduction of the IH 135 diesel engine represented a shift towards more efficient and reliable power sources in agricultural machinery. Its design laid the groundwork for future developments in tractor engines, influencing subsequent models and manufacturers. The engine's durability and performance have left a lasting legacy, with many units still in operation today, testament to the quality and engineering of International Harvester products.
Conclusion
The International Harvester 135 diesel engine stands as a significant achievement in the history of agricultural machinery. Its robust design and reliable performance helped shape the future of farming equipment, providing farmers with the power and efficiency needed to meet the challenges of modern agriculture.