4934678
Rocker Lever Housing
Cummins®

Introduction

The 4934678 Rocker Lever Housing by Cummins is a component designed for heavy-duty truck engines. It facilitates the movement of the rocker arms, which are essential for valve actuation. This housing ensures that the rocker arms are properly supported and aligned, contributing to the efficient functioning of the engine.

Basic Concepts of Rocker Lever Housing

A Rocker Lever Housing is a part of the engine that encases and supports the rocker arms. These arms transfer motion from the camshaft to the valves, allowing them to open and close at precise intervals. The housing interacts with other components such as the valves and camshafts to ensure smooth and reliable engine operation. It provides a stable environment for the rocker arms, protecting them from external elements and maintaining their alignment ¹.

Purpose of the 4934678 Rocker Lever Housing

This Cummins part is specifically designed to enhance the operation of truck engines. It contributes to valve actuation by providing a secure and precise mounting point for the rocker arms. This ensures that the valves open and close with the correct timing and force, which is vital for engine performance. The housing’s design helps in maintaining the integrity of the valve train, thereby supporting overall engine efficiency ².

Key Features

The 4934678 is constructed with high-quality materials that offer durability and resistance to wear. Its design includes precision engineering to ensure accurate fitment and function within the engine. The housing is built to withstand the high temperatures and pressures present in heavy-duty truck engines, providing reliable performance over time. Additionally, it features a robust construction that enhances its longevity and effectiveness in demanding conditions ³.

Benefits

This part offers several advantages, including improved engine efficiency and reliability. By ensuring precise valve actuation, it contributes to better engine performance and fuel economy. The housing’s durable construction and precise engineering help in reducing maintenance needs and extending the service life of the engine components. This results in a more reliable and cost-effective engine operation ⁴.

Installation and Compatibility

Proper installation of the 4934678 is vital to ensure correct fitment and alignment within the engine assembly. It is designed to be compatible with specific engine models, and following the manufacturer’s guidelines for installation is recommended to achieve optimal performance. Ensuring that the housing is properly aligned and secured will help in maintaining the efficiency and reliability of the engine.

Maintenance and Troubleshooting

Routine maintenance of the 4934678 includes regular inspection for signs of wear or damage, and ensuring that all fasteners are tight. Lubrication requirements should be met to reduce friction and wear on the rocker arms and other moving parts. Common issues such as leaks, wear, or malfunctions can often be addressed by following recommended maintenance practices and performing timely inspections. Troubleshooting tips may include checking for proper alignment, ensuring that all components are securely fastened, and addressing any signs of wear or damage promptly.

Cummins Overview

Cummins Inc. is a well-established company in the automotive industry, known for its high-quality engine components. With a history of innovation and commitment to excellence, Cummins has built a reputation for manufacturing reliable and durable parts. The 4934678 Rocker Lever Housing is a testament to Cummins’ dedication to producing components that meet the demanding requirements of heavy-duty truck engines.

Compatibility with Cummins Engines

The 4934678 is a critical component in the operation of several Cummins engines. This part is designed to fit seamlessly with the following engine models:

ISC CM2150 and ISL CM2150

The Rocker Lever Housing is compatible with the ISC CM2150 and ISL CM2150 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The housing ensures that the rocker levers operate smoothly, maintaining the engine’s efficiency and longevity.

ISC8.3 CM2250 and ISL9 CM2250

For the ISC8.3 CM2250 and ISL9 CM2250 engines, the Rocker Lever Housing is an essential part that supports the rocker arm mechanism. These engines are part of the next generation in Cummins’ lineup, offering improved fuel efficiency and power output. The housing’s design ensures that the rocker arms can move freely, reducing wear and tear on the engine.

QSC9 CM2250/QSL9 CM2250 and QSL9 CM2350 L102

The Rocker Lever Housing also fits the QSC9 CM2250, QSL9 CM2250, and QSL9 CM2350 L102 engines. These engines are designed for a variety of applications, from construction to agricultural use. The housing’s precision engineering ensures that the rocker arms function correctly, contributing to the engine’s overall performance and durability.

Each of these engines benefits from the Rocker Lever Housing’s ability to maintain the integrity of the rocker arm system, ensuring smooth operation and reducing the likelihood of mechanical failures.

Integration in Engine Systems

The 4934678 is an essential component in the operation of the valve train system within an engine. This housing encases the rocker lever, which is pivotal for transferring the motion from the camshaft to the valves.

When installed, the Rocker Lever Housing secures the rocker lever in place, ensuring that it operates within the precise parameters required for optimal engine performance. The housing provides a stable environment for the rocker lever to function, protecting it from external contaminants and ensuring consistent operation.

The rocker lever, housed within 4934678, interacts directly with the camshaft and the valve stem. As the camshaft rotates, it imparts motion to the rocker lever, which then translates this motion to open and close the valves at the correct times. This precise timing is vital for the engine’s efficiency and power output.

Additionally, the Rocker Lever Housing plays a role in maintaining the correct clearance between the rocker lever and the valve stem. This clearance is necessary to prevent interference and ensure smooth operation of the valve train. The housing also aids in dissipating heat generated during engine operation, contributing to the longevity and reliability of the valve train components.

Conclusion

In summary, the 4934678 Rocker Lever Housing is integral to the proper function and durability of the valve train system, ensuring that the rocker lever operates efficiently and reliably within the engine.