4974975
Push Rod
Cummins®

The Cummins 4974975 Push Rod is a critical component in heavy-duty truck engines, integral to the valve train mechanism. It facilitates the synchronized operation of the engine’s valves with the camshaft, ensuring precise timing and efficiency ¹.

Basic Concepts of Push Rods

Push rods are mechanical links in overhead valve (OHV) engines, transmitting motion from the camshaft to the valves. They convert the camshaft’s rotational motion into linear motion for the valves, ensuring harmonious operation with the engine’s cycles ².

Role of the Cummins 4974975 Push Rod in Truck Operation

This Cummins part is vital for the efficient operation of a truck’s engine. It transmits the camshaft’s motion to the rocker arms, ensuring valves open and close at the correct times. This timing is essential for engine performance, affecting fuel efficiency, power output, and emissions ³.

Key Features of the Cummins 4974975 Push Rod

Crafted from high-quality materials, the 4974975 is designed to withstand high stresses and temperatures. Its precise manufacturing ensures minimal clearances and smooth operation, reducing wear on other engine components and contributing to the engine’s reliability and efficiency.

Benefits of Using the Cummins 4974975 Push Rod

Using this part in heavy-duty truck engines enhances engine efficiency by ensuring valves operate with minimal resistance and maximum accuracy. This results in improved fuel economy and reduced emissions. Its durability also contributes to the engine’s reliability and longevity, reducing maintenance needs.

Troubleshooting and Maintenance Suggestions

Regular maintenance and troubleshooting are essential for the optimal performance and longevity of the 4974975. Common issues include wear, bending, or breakage, which can affect engine performance. Diagnostic procedures should involve checking clearances, inspecting for wear or damage, and ensuring related components like camshafts and rocker arms are in good condition. Regular lubrication and inspection can prevent issues and extend the service life of the push rod.

Cummins: A Brief Overview

Cummins Inc. is a global leader in power solutions, including diesel and natural gas engines. With over a century of history, Cummins is known for quality, innovation, and reliability in the automotive industry. Its product range includes engines and components for various applications, demonstrating a commitment to high-performance, durable solutions.

Cummins Push Rod 4974975 Compatibility

The 4974975 is compatible with various Cummins engines, ensuring reliable operation and performance. Compatible engines include:

• ISX12 Series: ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12/ISX11.9 CM2250
• ISZ13 Series: ISZ13 CM2150 Z105
• QSX11.9 Series: QSX11.9 CM2250 ECF
• QSZ13 Series: QSZ13 CM2150 Z101, QSZ13 CM2150 Z102
• Z13 Series: Z13 Z108G

Role of Part 4974975 Push Rod in Engine Systems

In engine systems, the 4974975 is integral to the valve train mechanism. It facilitates the transfer of motion from the camshaft to the valves, ensuring precise timing and efficient engine performance.

Interaction with the Lever

The Push Rod interacts directly with the lever, part of the rocker arm assembly. When the camshaft lobe rises, it pushes against the Push Rod, which moves the lever. This movement is essential for converting the rotational motion of the camshaft into the linear motion required to open and close the valves.

Coordination with the Rocker

The rocker, or rocker arm, amplifies the motion transmitted by the Push Rod. As the Push Rod pushes against the lever on the rocker, the rocker pivots, applying force to the valve stem. This amplification ensures that the valves open sufficiently to allow the necessary airflow into and out of the combustion chamber.

Overall Function in the Valve Train

The seamless interaction between the Push Rod, lever, and rocker is vital for maintaining the integrity of the valve train. The Push Rod ensures that the motion from the camshaft is accurately and efficiently transferred, allowing the rocker to perform its function effectively. This coordinated effort is essential for optimal engine operation, contributing to both performance and durability.

Conclusion

The Cummins 4974975 Push Rod is a vital component in heavy-duty truck engines, ensuring the precise and efficient operation of the valve train. Its robust construction, precise engineering, and compatibility with various Cummins engines contribute to enhanced engine performance, reliability, and longevity. Regular maintenance and troubleshooting are recommended to ensure optimal performance and extend the service life of this part.