3079662
Rocker Lever Support
Cummins®

The Rocker Lever Support, identified by Part #3079662, is a component manufactured by Cummins, a leading name in the automotive and heavy-duty truck industry. This part plays a role in the operation of heavy-duty truck engines, ensuring the efficient functioning of the valve train system. Understanding its function, features, and importance can provide valuable insights into maintaining and optimizing engine performance.

Function and Operation

The Rocker Lever Support operates within the engine system by providing a stable mounting point for the rocker arms. These rocker arms are pivotal in transferring motion from the camshaft to the valves, allowing for the precise opening and closing of the engine’s intake and exhaust valves. The Rocker Lever Support ensures that the rocker arms remain correctly positioned and aligned, which is vital for the consistent and reliable operation of the valve train. Its interaction with other components, such as the camshaft and valve springs, is crucial for maintaining the engine’s overall efficiency and performance ¹.

Key Features

The design and material characteristics of the Rocker Lever Support are engineered to offer durability and precision. Constructed from high-quality materials, this component is designed to withstand the rigorous conditions within a heavy-duty engine. Its precise engineering ensures that it fits seamlessly with Cummins engines, providing a reliable and consistent performance. The material used in its construction is chosen for its strength and resistance to wear, ensuring longevity and reduced need for frequent replacements ².

Role in Truck Operation

The Rocker Lever Support plays a role in ensuring efficient valve operation, which is fundamental to the engine’s performance. By providing a stable and accurate mounting point for the rocker arms, it helps maintain the timing and efficiency of valve operations. This, in turn, contributes to the engine’s combustion efficiency, ensuring that the air-fuel mixture is ignited at the optimal moment. Efficient valve operation is crucial for maximizing engine power output and fuel efficiency, making the Rocker Lever Support an integral part of the engine system ³.

Benefits

The advantages provided by the Rocker Lever Support include improved engine reliability, enhanced fuel efficiency, and reduced maintenance requirements. By ensuring that the rocker arms are correctly positioned and aligned, it helps prevent issues such as valve train noise, reduced engine performance, and potential engine damage. Its durable construction and precise engineering contribute to the overall reliability of the engine, allowing for consistent performance over time. Additionally, by reducing the likelihood of wear and misalignment, it helps minimize maintenance needs, providing cost savings and increased uptime for heavy-duty trucks ⁴.

Troubleshooting and Maintenance

Identifying common issues related to the Rocker Lever Support, such as wear or misalignment, is important for maintaining optimal engine performance. Regular inspections can help detect signs of wear, such as unusual noise or changes in engine performance, indicating that the component may need attention. Recommended maintenance practices include periodic checks for wear and proper alignment, as well as ensuring that all related components, such as the rocker arms and valve train, are in good condition. Timely replacement or repair of the Rocker Lever Support can help prevent more significant engine issues and ensure continued efficient operation.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the automotive and heavy-duty truck industry for producing reliable and high-performance components. Their product portfolio includes a wide range of engines and parts designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to quality, innovation, and customer satisfaction has made them a trusted name in the industry, providing solutions that enhance the performance and reliability of heavy-duty trucks.

Compatibility with Cummins Engines

The Rocker Lever Support, identified by the part number 3079662, is a critical component in several Cummins engine models. This part is designed to ensure the proper functioning and longevity of the rocker levers, which are essential for the valve train operation in these engines. Here is a detailed overview of its compatibility with various Cummins engine models:

ISM Series Engines

• ISM CM570 and ISM CM570/870

  • The Rocker Lever Support is integral to the ISM CM570 and ISM CM570/870 engines. It provides the necessary support to the rocker levers, ensuring smooth and reliable valve operation. This is crucial for maintaining the engine’s performance and efficiency.

• ISM CM876

  • In the ISM CM876 engine, the Rocker Lever Support plays a similar role, supporting the rocker levers and contributing to the overall reliability of the engine’s valve train.

ISM11 Series Engines

• ISM11 CM876 SN
  • The ISM11 CM876 SN engine also utilizes the Rocker Lever Support. This part is essential for maintaining the structural integrity of the rocker levers, which are critical for the engine’s operation.

M11 Series Engines

• M11 CELECT and M11 CELECT PLUS
  • The Rocker Lever Support is compatible with both the M11 CELECT and M11 CELECT PLUS engines. It ensures that the rocker levers are properly supported, which is vital for the engine’s performance and longevity.

QSM11 Series Engines

• QSM11 CM570 and QSM11 CM876
  • The QSM11 CM570 and QSM11 CM876 engines also benefit from the Rocker Lever Support. This part is designed to provide the necessary support to the rocker levers, ensuring that the valve train operates smoothly and efficiently.

In summary, the Rocker Lever Support (Part 3079662) is a versatile and essential component that is compatible with a wide range of Cummins engines, including the ISM, ISM11, M11, and QSM11 series. Its primary function is to support the rocker levers, ensuring the smooth and reliable operation of the engine’s valve train.

Role of Part 3079662 Rocker Lever Support in Engine Systems

The part 3079662 Rocker Lever Support is an integral component in the operation of various engine systems, particularly those utilizing overhead valve (OHV) or overhead cam (OHC) designs. This component ensures the precise and reliable movement of the rocker lever, which is essential for the efficient transfer of motion from the camshaft to the valves.

In an OHV engine, the Rocker Lever Support is positioned to hold the rocker lever in place, allowing it to pivot smoothly as the pushrod contacts it. This motion is initiated by the camshaft lobe pushing against the lifter, which then transmits the force through the pushrod to the rocker lever. The Rocker Lever Support ensures that the rocker lever remains aligned and stable, enabling it to open and close the valves with the necessary precision and timing.

In OHC engines, the Rocker Lever Support plays a similar role but is often part of a more compact and direct system. Here, the camshaft lobes directly interact with the rocker lever, which is supported by the Rocker Lever Support. This setup allows for a more direct transfer of motion, reducing the number of moving parts and potentially increasing engine efficiency and responsiveness.

Overall, the Rocker Lever Support is essential for maintaining the integrity and performance of the valve train. It ensures that the rocker lever can operate within its designed parameters, contributing to the engine’s overall reliability and efficiency.

Conclusion

The Rocker Lever Support (Part 3079662) is a critical component in the operation of Cummins engines, ensuring the efficient and reliable functioning of the valve train system. Its durable construction, precise engineering, and compatibility with various Cummins engine models make it an essential part for maintaining engine performance and reliability. Regular maintenance and timely replacement of this part can help prevent engine issues and ensure continued efficient operation of heavy-duty trucks.