3964908
Rocker Lever Support
Cummins®

Introduction

The Rocker Lever Support 3964908, manufactured by Cummins, is a critical component in the engine system. This part provides structural support and facilitates the operation of the rocker lever mechanism, ensuring efficient motion transfer from the camshaft to the valves. This contributes to the overall performance and reliability of the engine ¹.

Function and Operation

The 3964908 operates within the engine by interacting with the camshaft and the valve train. As the camshaft rotates, it actuates the rocker lever, which is supported by the Rocker Lever Support. This support ensures that the rocker lever maintains proper alignment and operates smoothly. The efficient transfer of motion from the camshaft to the valves is facilitated by this component, allowing for precise valve timing and operation, which is vital for engine performance ².

Key Features

The Rocker Lever Support 3964908 is characterized by its robust design and material composition. It is typically made from high-strength materials to withstand the stresses and loads encountered within the engine environment. The design incorporates features that enhance its durability and performance, such as precise machining for optimal fit and function, and surface treatments that reduce friction and wear. These attributes contribute to the longevity and reliability of the component ³.

Role in Truck Operation

In the context of a commercial truck, the Rocker Lever Support 3964908 ensures the engine operates efficiently and reliably. By supporting the rocker lever mechanism, it helps maintain proper valve operation, which is essential for engine efficiency. This, in turn, contributes to the truck’s overall performance, allowing it to meet the demands of heavy-duty applications with reliability.

Benefits

The advantages provided by the Rocker Lever Support 3964908 include improved engine performance due to its role in ensuring precise valve operation. Additionally, its durable construction reduces wear on associated components, leading to longer engine life. Enhanced fuel efficiency can also be observed, as optimal valve timing and operation contribute to more complete combustion and reduced fuel consumption.

Installation and Compatibility

Proper installation of the Rocker Lever Support is important to ensure it functions as intended. This involves following manufacturer guidelines, which may include specific torque settings for fasteners and ensuring all mating surfaces are clean and free of debris. Compatibility with various engine models and configurations should be verified to ensure optimal performance and longevity.

Maintenance and Troubleshooting

Regular maintenance practices are recommended to ensure the longevity and optimal performance of the Rocker Lever Support. This includes periodic inspections for signs of wear or damage, and cleaning or replacing the component as necessary. Common issues that may arise include wear on the support surface or misalignment of the rocker lever, which can be addressed through proper maintenance and adjustment procedures.

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 reputation for quality and reliability in the commercial truck industry. Its product range includes a variety of engines and components designed to meet the demanding requirements of heavy-duty applications.

Compatibility of 3964908

The 3964908 is designed to fit a variety of Cummins engines, ensuring compatibility across different models and configurations. Here is a detailed breakdown of the engines with which this part is compatible:

Cummins B Series Engines

• B4.5 RGT
• B5.6 CM2670 B152B
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125

Cummins ISB and ISBE Series Engines

• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118
• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

Cummins QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)

This part is engineered to provide reliable support for the rocker levers in these engines, ensuring smooth operation and longevity. The compatibility of the Rocker Lever Support 3964908 across these models highlights its versatility and importance in maintaining the performance of Cummins engines.

Role of 3964908 in Engine Systems

In the context of engine systems, the 3964908 is an integral component that ensures the proper functioning of the rocker lever assembly. This support is designed to provide a stable mounting point for the rocker lever, which is essential for the operation of the valve train in an engine.

When integrated into an Assembly, the Rocker Lever Support allows for precise alignment and secure attachment of the rocker lever. This ensures that the rocker lever can effectively transfer motion from the camshaft to the valves, maintaining the engine’s efficiency and performance.

In a Long Block configuration, where the engine is assembled without ancillary components, the Rocker Lever Support plays a significant role. It ensures that the rocker lever remains in the correct position, allowing for consistent valve actuation. This is particularly important in high-performance engines where timing and precision are paramount.

For a Long Block Kit, which includes all necessary components to build a complete engine, the Rocker Lever Support is a key part. It provides the necessary structural integrity to the rocker lever assembly, ensuring that all components work in harmony. This support helps in maintaining the durability and reliability of the engine over time.

Conclusion

The 3964908 Rocker Lever Support is a fundamental component that enhances the functionality and reliability of the rocker lever assembly within various engine systems. Its role in providing a stable and precise mounting solution cannot be overstated, as it directly impacts the performance and longevity of the engine.