3076046
Push Rod
Cummins®

Introduction

The Cummins 3076046 Push Rod is a component designed for use in heavy-duty truck engines. Its purpose is to facilitate the movement of engine valves, ensuring that they open and close at the correct times to allow for the intake and exhaust of gases. This part plays a role in the operation of heavy-duty trucks by contributing to the engine’s efficiency and performance ¹.

Basic Concepts of Push Rods

A push rod is a mechanical linkage used in overhead valve (OHV) engines to transfer motion from the camshaft to the valves. It operates by converting the rotational motion of the camshaft into linear motion that moves the valves. This mechanism is important for the timing and efficiency of the engine’s combustion process ².

Role of the 3076046 Push Rod in Truck Operation

The 3076046 Push Rod is integral to the engine’s valve train system in heavy-duty trucks. It connects the camshaft to the rocker arms, which in turn operate the valves. This push rod ensures precise valve timing, which is vital for the engine’s performance, fuel efficiency, and emissions control. By maintaining accurate valve operation, the 3076046 Push Rod contributes to the truck’s overall reliability and efficiency ³.

Key Features

The Cummins 3076046 Push Rod is characterized by its robust material composition and precise design. It is typically made from high-quality steel, which provides durability and resistance to wear. The design includes specific dimensions and tolerances to ensure optimal performance within the engine. Additionally, the push rod may feature unique attributes such as a polished surface to reduce friction and enhance longevity.

Benefits of Using the 3076046 Push Rod

Utilizing the 3076046 Push Rod offers several advantages. It enhances engine performance by ensuring reliable valve operation, which is important for maintaining power output and fuel efficiency. The durability of the push rod contributes to the engine’s longevity, reducing the need for frequent replacements. Furthermore, its reliable operation helps in maintaining consistent emissions levels, adhering to environmental regulations.

Troubleshooting and Maintenance

Common issues with push rods may include wear, bending, or breakage, which can lead to valve train problems. Diagnostic procedures involve inspecting the push rod for signs of damage or wear and checking the valve clearances. Regular maintenance practices, such as cleaning and lubricating the push rod, can help prevent issues and ensure optimal performance. It is also important to follow the manufacturer’s guidelines for inspection intervals and replacement criteria.

Installation Considerations

When installing the 3076046 Push Rod, it is important to consider factors such as proper alignment, torque specifications, and compatibility with other engine components. Ensuring that the push rod is correctly aligned with the camshaft and rocker arms is crucial for the engine’s operation. Adhering to the specified torque values during installation helps prevent damage and ensures the push rod functions as intended. Compatibility with other components, such as the camshaft and rocker arms, must be verified to avoid operational issues.

Performance Enhancements

The 3076046 Push Rod contributes to overall engine performance by ensuring precise valve timing and operation. This can lead to potential improvements in power output, as the engine is able to combust fuel more efficiently. Additionally, reliable valve operation can enhance fuel efficiency and reduce emissions, making the engine more environmentally friendly. The push rod’s role in maintaining consistent valve performance is a key factor in achieving these performance enhancements.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a strong reputation in the industry, Cummins is committed to producing high-quality automotive components. The company’s focus on reliability, performance, and customer satisfaction is reflected in its wide range of products, including the 3076046 Push Rod.

Compatibility with Cummins Engines

The Cummins Push Rod part number 3076046 is designed to fit within a range of Cummins engine models. Below is a detailed description of its compatibility across various engine types:

ISM Series Engines

• ISM CM570
• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN

The ISM series engines, including the ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN, are equipped with the Push Rod 3076046. This part is integral to the engine’s valve train system, ensuring proper valve operation and performance.

L10 and M11 Series Engines

• L10 CELECT
• M11 CELECT
• M11 CELECT PLUS

The L10 CELECT, M11 CELECT, and M11 CELECT PLUS engines also utilize the Push Rod 3076046. This part is essential for maintaining the mechanical linkage between the camshaft and the valve, ensuring that the valves open and close at the correct times.

QSM11 Series Engines

• QSM11 CM570
• QSM11 CM876

The QSM11 series engines, specifically the QSM11 CM570 and QSM11 CM876, are another set of engines that require the Push Rod 3076046. This part is crucial for the smooth operation of the engine’s valve train, contributing to overall engine efficiency and reliability.

Each of these engines relies on the Push Rod 3076046 to function correctly, making it a critical component in the maintenance and operation of these Cummins engines.

Role of Part 3076046 in Engine Systems

The 3076046 Push Rod is an integral component in the operation of overhead valve (OHV) engine systems. It serves as a mechanical linkage that transfers motion from the camshaft to the rocker arm, which in turn actuates the valve.

When the camshaft rotates, it pushes against one end of the push rod. This action causes the push rod to move upward. The other end of the push rod is connected to the rocker arm. As the push rod moves, it lifts the rocker arm. The rocker arm then pivots on its fulcrum, transferring the motion to the valve. This process opens the valve, allowing air and fuel into the combustion chamber or expelling exhaust gases.

The precision and reliability of the 3076046 Push Rod are essential for maintaining the correct valve timing and lift. Any deviation in its performance can lead to inefficient combustion, reduced engine performance, and potential damage to other engine components.

Conclusion

In summary, the 3076046 Push Rod plays a significant role in ensuring the smooth and efficient operation of the valve train in OHV engine systems. Its interaction with the lever and rocker arm is fundamental to the engine’s ability to perform its intended function.