3948280
Rocker Lever Cover Spacer
Cummins®

The Rocker Lever Cover Spacer, identified by Part #3948280, is a component manufactured by Cummins, a well-established name in the automotive industry, particularly known for its heavy-duty truck engines. This spacer plays a role in the functionality and efficiency of the engine’s valve train system. Understanding its purpose and operation is important for maintaining and optimizing the performance of Cummins engines.

Function and Operation

The Rocker Lever Cover Spacer is integral to the engine’s valve train system. It ensures the proper clearance and alignment between the rocker lever and the valve stem. By maintaining consistent spacing, the spacer helps in the efficient transfer of motion from the camshaft to the valves, which is important for the engine’s operation. This precise alignment and clearance are necessary for the valves to open and close at the correct times, thereby contributing to the overall efficiency and performance of the engine ¹.

Key Features

The design and material characteristics of the Rocker Lever Cover Spacer are noteworthy. Crafted from high-quality materials, it is engineered to withstand the demanding conditions within a heavy-duty engine. Its durability is enhanced by precision manufacturing processes, ensuring that it fits snugly and functions effectively within the valve train system. The spacer is specifically designed to be compatible with Cummins engines, guaranteeing optimal performance and integration within the engine’s architecture ².

Benefits

Incorporating the Rocker Lever Cover Spacer into the engine design offers several advantages. It contributes to improved engine performance by ensuring that the valve train components operate with minimal friction and wear. This results in more efficient valve operation, which can lead to better fuel efficiency and overall engine reliability. Additionally, the spacer helps in reducing wear on the valve train components, extending their service life and enhancing the engine’s durability in demanding operating conditions ³.

Installation and Maintenance

Proper installation of the Rocker Lever Cover Spacer is important for its effective function. It should be installed according to the manufacturer’s torque specifications to ensure it is securely in place without over-tightening, which could lead to damage. Regular maintenance checks are recommended to ensure the spacer remains in good condition. This includes inspecting for any signs of wear or damage and ensuring that it continues to maintain the proper clearance and alignment within the valve train system ⁴.

Troubleshooting Common Issues

Potential issues with the Rocker Lever Cover Spacer may include improper clearance or misalignment. These can lead to inefficient valve operation and increased wear on the valve train components. Troubleshooting steps may involve checking the installation torque, ensuring the spacer is correctly positioned, and inspecting for any physical damage. Addressing these issues promptly can help maintain the engine’s performance and longevity.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a strong reputation in the automotive industry, particularly for heavy-duty truck engines, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product offerings and technological advancements have established it as a trusted name in the industry.

Cummins Rocker Lever Cover Spacer 3948280 Compatibility

The Cummins Rocker Lever Cover Spacer part number 3948280 is designed to fit seamlessly with a range of Cummins engines, ensuring a precise and secure fit. This component is integral to the assembly and operation of the engine’s rocker arm system, providing stability and alignment necessary for optimal performance.

ISL CM554

The ISL CM554 engine benefits from the 3948280 spacer, which is engineered to maintain the correct clearance and positioning of the rocker levers. This ensures that the engine operates smoothly and efficiently, reducing the risk of mechanical failure and prolonging the engine’s lifespan.

ISL9 CM2150 SN

Similarly, the ISL9 CM2150 SN engine utilizes the 3948280 spacer to maintain the integrity of the rocker arm assembly. This part is crucial in ensuring that the engine’s components function correctly, contributing to the overall reliability and performance of the engine.

Grouping of Engines

Both the ISL CM554 and ISL9 CM2150 SN engines are part of Cummins’ lineup of high-performance and durable engines. The use of the 3948280 spacer in these engines highlights Cummins’ commitment to providing high-quality, precision-engineered components that enhance engine performance and longevity.

Role of Part 3948280 Rocker Lever Cover Spacer in Engine Systems

The part 3948280 Rocker Lever Cover Spacer is a component in the assembly and functionality of various engine systems, particularly when integrated with components like the Brake, Engine, and Engine Brake Kit.

Integration with the Brake System

In brake systems, the Rocker Lever Cover Spacer ensures proper alignment and spacing between the rocker lever and the cover. This alignment is important for the efficient transfer of force from the brake pedal to the brake mechanism. The spacer helps maintain the correct geometry and reduces the likelihood of mechanical interference, which could otherwise lead to inefficient braking performance or increased wear on brake components.

Role in the Engine Assembly

Within the engine assembly, the Rocker Lever Cover Spacer plays a role in maintaining the structural integrity of the valve train. By providing the necessary spacing between the rocker lever and the engine cover, it ensures that the rocker arms operate within their designed parameters. This spacing is important for the consistent and reliable actuation of the valves, which directly impacts engine performance and longevity.

Function in the Engine Brake Kit

When incorporated into an Engine Brake Kit, the Rocker Lever Cover Spacer contributes to the enhanced braking capabilities of the engine. The spacer ensures that the additional components of the brake kit are properly aligned and spaced, allowing for the effective engagement of the engine braking system. This is particularly important in heavy-duty applications where engine braking is relied upon for safe and controlled deceleration.

Conclusion

Overall, the Rocker Lever Cover Spacer is a key component that supports the efficient and reliable operation of various engine systems by ensuring proper alignment, spacing, and structural integrity. Its role in maintaining the performance and longevity of Cummins engines underscores the importance of this part in automotive engineering.