4986574
Rocker Lever
Cummins®

The Cummins 4986574 Rocker Lever is a critical component in heavy-duty truck engines, facilitating the movement of the valves essential for intake and exhaust processes. Its proper function is vital for the vehicle’s efficiency and performance.

Basic Concepts of Rocker Levers

A rocker lever, or rocker arm, is a pivotal part of an engine’s valve train system. It transfers motion from the camshaft to the valves, allowing for precise control over valve opening and closing. This mechanism is fundamental for the engine’s operation, providing mechanical advantage for reliable valve operation under various conditions ¹.

Purpose of the 4986574 Rocker Lever

This Cummins part is engineered to interact with the camshaft and valves in truck engines, ensuring valves open and close at the correct times. This precise timing is crucial for the engine’s combustion process, impacting performance and fuel efficiency. The rocker lever’s design withstands high stresses and temperatures, enhancing engine durability and reliability ².

Key Features

The 4986574 is constructed from high-strength steel or durable alloys, offering resistance to wear and fatigue. It may feature design elements like a roller tip to reduce friction and wear, ensuring smooth and reliable operation in heavy-duty truck engines ³.

Benefits

This part offers advantages such as precise valve actuation for better combustion and increased power output. Its high-quality materials and engineering ensure long-term reliability and contribute to better fuel efficiency, reducing operating costs.

Installation and Compatibility

Proper installation of the 4986574 is crucial for optimal performance and longevity. It is designed for specific engine models, necessitating adherence to manufacturer guidelines for installation, including correct torquing of fasteners and clean mating surfaces.

Troubleshooting and Maintenance

Common issues with the 4986574 may include wear, noise, or operational failure. Troubleshooting involves inspecting for wear or damage, checking clearances, and ensuring tight fasteners. Regular maintenance, such as cleaning and lubricating the lever and its pivot points, is essential for preventing issues and ensuring optimal performance.

Performance and Efficiency

The 4986574 contributes to engine performance and efficiency by ensuring precise and reliable valve actuation. This leads to improved combustion efficiency, increased power output, and better fuel economy. Its design and materials are chosen for durability and performance under heavy-duty conditions.

Cummins Corporation

Cummins Inc. is renowned for its innovation and quality in the automotive industry, offering a range of engines and related technologies. The company is committed to producing reliable and efficient components, including the 4986574, for various applications.

Conclusion

The 4986574 Rocker Lever is a vital component in heavy-duty truck engines, playing a significant role in valve operation and engine performance. Its design, materials, and precise function contribute to the engine’s efficiency, reliability, and durability. Proper installation, maintenance, and understanding of its role in the engine system are essential for optimal vehicle performance.