3074376
Rocker Lever Shaft
Cummins®

The Rocker Lever Shaft 3074376, manufactured by Cummins, is a critical component in the operation of heavy-duty trucks. Cummins is renowned for its high-quality components designed to enhance vehicle performance and reliability. This part plays a significant role in the engine’s valve train system.

Basic Concepts of Rocker Lever Shaft

The Rocker Lever Shaft operates on fundamental mechanical principles. It is a pivotal part of the valve train system, responsible for transferring motion from the camshaft to the valves. This transfer ensures the precise opening and closing of the engine’s valves, which is essential for the combustion process ¹.

Purpose and Function

The primary purpose of the Rocker Lever Shaft 3074376 is to facilitate the transfer of motion from the camshaft to the valves within a truck’s engine. As the camshaft rotates, it actuates the rocker lever shaft, which in turn operates the valves. This mechanism ensures that the valves open and close at the correct times, allowing for the intake of air and fuel and the expulsion of exhaust gases. This precise timing is vital for the engine’s efficiency and performance ².

Key Features

The Rocker Lever Shaft 3074376 is designed with several key features that enhance its performance and durability. It is constructed from high-quality materials, ensuring it can withstand the rigors of heavy-duty truck operation. The design includes precise machining and tolerances to ensure smooth operation and minimal wear. Additionally, the shaft may feature unique characteristics such as hardened surfaces or specialized coatings to further improve its longevity and reliability ³.

Benefits

The Rocker Lever Shaft 3074376 offers several benefits that contribute to overall truck performance. By ensuring precise valve operation, it helps improve engine efficiency, leading to better fuel economy and reduced emissions. Its robust construction and design enhance the reliability and longevity of the engine, reducing the need for frequent maintenance and replacements. These factors combined contribute to the overall performance and durability of the truck ⁴.

Installation and Compatibility

Proper installation of the Rocker Lever Shaft 3074376 is crucial for its optimal performance. It should be installed according to the manufacturer’s guidelines, which may include specific torque settings and alignment procedures. Compatibility with various truck models and engine types is an important consideration, ensuring that the shaft fits and functions correctly within the engine’s valve train system ⁵.

Maintenance and Troubleshooting

Routine maintenance is key to ensuring the optimal performance of the Rocker Lever Shaft 3074376. This may include regular inspections for wear and damage, as well as lubrication to reduce friction and wear. Troubleshooting common issues such as noisy operation or valve train problems may involve checking for proper installation, alignment, and lubrication. Addressing these issues promptly can help maintain the shaft’s performance and longevity.

Cummins Overview

Cummins Inc. is a leading manufacturer of diesel engines, known for its commitment to quality and innovation. With a rich history in the industry, Cummins has built a reputation for producing reliable and high-performance automotive components. The company’s dedication to excellence is evident in its products, including the Rocker Lever Shaft 3074376, which is designed to meet the demanding requirements of heavy-duty truck applications.

Cummins Rocker Lever Shaft 3074376 Compatibility

The Cummins Rocker Lever Shaft, part number 3074376, is a critical component in the valve train system of several Cummins engines. This part is designed to interface with the camshaft and the rocker arms, ensuring smooth and efficient valve operation. Below is a detailed look at how this rocker lever shaft fits into the specified Cummins engines.

G855

The G855 engine utilizes the Rocker Lever Shaft 3074376 as part of its valve train mechanism. This shaft is integral in converting the rotational motion of the camshaft into the linear motion required to open and close the engine’s valves.

N14 CELECT PLUS and N14 MECHANICAL

Both the N14 CELECT PLUS and N14 MECHANICAL engines share a similar valve train architecture, making the Rocker Lever Shaft 3074376 compatible with both. In these engines, the shaft ensures that the rocker arms are properly actuated by the camshaft, facilitating the precise timing necessary for optimal engine performance.

QSN14 CM876 N103 and QSNT14 CM876 N102

The QSN14 CM876 N103 and QSNT14 CM876 N102 engines also incorporate the Rocker Lever Shaft 3074376. These engines, which are part of the Cummins QSN series, rely on this component to maintain the integrity of the valve train system. The shaft’s role in these engines is to ensure that the rocker arms are correctly positioned and operated, which is crucial for the engines’ overall efficiency and longevity.

Role of Part 3074376 Rocker Lever Shaft in Engine Systems

In engine systems, the part 3074376 Rocker Lever Shaft is integral to the operation of the valve train. This component acts as a pivotal link between the camshaft and the valve system, ensuring precise and efficient valve actuation.

Interaction with the Camshaft

The Rocker Lever Shaft is directly influenced by the camshaft. As the camshaft lobes rotate, they push against the rocker lever, which is mounted on the Rocker Lever Shaft. This motion is transferred through the shaft to the rocker arms, initiating the valve opening process.

Coordination with Rocker Arms

Rocker arms are essential components in the valve train, and the Rocker Lever Shaft plays a key role in their function. The shaft supports the rocker arms, allowing them to pivot and amplify the motion from the camshaft. This amplified motion ensures that the valves open and close with the necessary force and precision.

Lever Mechanism

The lever mechanism, facilitated by the Rocker Lever Shaft, is designed to enhance the efficiency of valve operation. By providing a mechanical advantage, the lever allows for greater control over valve timing and lift. This is particularly important in high-performance engines where timing and lift precision can significantly impact engine efficiency and power output.

Overall System Integration

In summary, the Rocker Lever Shaft (part 3074376) is a fundamental component that ensures the smooth and efficient operation of the valve train. Its role in transferring motion from the camshaft to the rocker arms and subsequently to the valves is essential for maintaining engine performance and reliability.

Conclusion

The Rocker Lever Shaft 3074376 is a vital component in the valve train system of heavy-duty trucks, ensuring precise and efficient valve operation. Its robust design, compatibility with various Cummins engines, and the benefits it offers in terms of engine performance and reliability make it an essential part for maintaining the high standards of performance that Cummins is known for.