4940845
Breather Tube
Cummins®

The 4940845 Breather Tube Assembly is a component designed by Cummins, a well-established manufacturer in the automotive industry. This assembly is integral to the operation of heavy-duty trucks, ensuring the engine system functions efficiently. Cummins is renowned for its commitment to producing high-quality engine components, and the 4940845 Breather Tube Assembly is no exception.

Basic Concepts of Breather Tube Assembly

A Breather Tube Assembly is a component that facilitates the release of pressure and the removal of moisture from a truck’s engine crankcase. It operates by allowing air to enter and exit the crankcase, which helps maintain a balanced pressure and prevents the accumulation of moisture and contaminants. This process is vital for preserving engine health and ensuring optimal performance ¹.

Purpose of the 4940845 Breather Tube Assembly

The 4940845 Breather Tube Assembly plays a role in the operation of a truck by equalizing pressure and removing moisture from the engine crankcase. This function is crucial for preventing the buildup of pressure that could lead to leaks or damage and for keeping the engine clean and dry, which enhances its longevity and efficiency ².

Key Features

The 4940845 Breather Tube Assembly is characterized by several key features that contribute to its effectiveness. It is constructed from durable materials that can withstand the harsh conditions within an engine environment. The design of the assembly ensures efficient airflow, which is essential for its function. Additionally, it is engineered to integrate seamlessly with other engine components, ensuring a cohesive and efficient engine system ³.

Benefits

The implementation of the 4940845 Breather Tube Assembly in a truck’s engine system offers several benefits. It contributes to improved engine performance by maintaining optimal pressure and moisture levels within the crankcase. This, in turn, extends the lifespan of engine components and enhances the overall reliability of the engine system. The assembly is a testament to Cummins’ dedication to producing components that not only meet but exceed industry standards.

Installation and Compatibility

Proper installation of the 4940845 Breather Tube Assembly is vital to ensure it functions as intended within the truck’s engine system. It is designed to be compatible with various Cummins engine models, ensuring a wide range of applications. Following the manufacturer’s guidelines during installation will help maintain the integrity of the engine system and ensure the assembly operates efficiently.

Troubleshooting and Maintenance

Common issues associated with Breather Tube Assemblies can include blockages or leaks, which may affect engine performance. Regular inspection and maintenance can help identify and address these problems promptly. Ensuring the assembly is clean and free from obstructions will contribute to its longevity and efficiency. Additionally, adhering to the manufacturer’s maintenance schedule will help preserve the quality and performance of the 4940845 Breather Tube Assembly.

Cummins: Manufacturer Overview

Cummins Inc. has a rich history in the automotive industry, known for its high-quality engine components. The company’s reputation is built on a foundation of innovation, reliability, and a commitment to excellence. Cummins continues to be a leader in the production of engine components, with a focus on enhancing performance, efficiency, and durability. The 4940845 Breather Tube Assembly is a reflection of Cummins’ ongoing dedication to providing superior automotive components.

Cummins Breather Tube Assembly 4940845 Compatibility

The Cummins Breather Tube Assembly part number 4940845 is designed to fit seamlessly with various engine models, ensuring optimal performance and reliability. This component is integral to the engine’s ventilation system, facilitating the release of gases and maintaining pressure balance within the engine’s crankcase.

Engine Compatibility

• 4B3.9 Series

  • The 4940845 Breather Tube Assembly is specifically engineered to integrate with the 4B3.9 engine series. This engine series is known for its robust design and efficiency, making it a popular choice in various industrial applications. The breather tube assembly ensures that the engine operates smoothly by managing the pressure and gases effectively.

• 4BT3.9 Series

  • Similarly, the 4BT3.9 engine series benefits from the use of the 4940845 Breather Tube Assembly. This series is recognized for its durability and performance, often used in heavy-duty applications. The breather tube assembly plays a crucial role in maintaining the engine’s health by preventing the build-up of harmful gases and ensuring proper ventilation.

• QSB6.7 Series

  • The QSB6.7 engine series is another beneficiary of the 4940845 Breather Tube Assembly. This series is known for its versatility and efficiency, making it suitable for a wide range of applications. The breather tube assembly ensures that the engine’s ventilation system functions correctly, contributing to the engine’s longevity and performance.

• QSC6.7 Series

  • The QSC6.7 engine series also integrates well with the 4940845 Breather Tube Assembly. This series is designed for high-performance and reliability, often used in demanding environments. The breather tube assembly is essential for maintaining the engine’s pressure balance and preventing the accumulation of gases that could lead to engine damage.

By ensuring a proper fit and function, the Cummins Breather Tube Assembly 4940845 enhances the overall performance and reliability of the engines it is designed to support.

Role of Part 4940845 Breather Tube Assembly in Engine Systems

The 4940845 Breather Tube Assembly is an essential component in maintaining the efficiency and reliability of engine systems. It is strategically integrated into the engine’s design to manage the ventilation of the crankcase, ensuring optimal performance and longevity of key components.

Interaction with the Cylinder Block

The Breather Tube Assembly is directly connected to the cylinder block, where it plays a significant role in venting pressure and contaminants that accumulate within the crankcase. As the engine operates, it generates blow-by gases—a mixture of air, fuel, and combustion byproducts—that escape past the piston rings into the crankcase. The Breather Tube Assembly facilitates the removal of these gases, preventing pressure build-up that could lead to oil leaks or damage to the cylinder block.

Coordination with the Engine Cover

Additionally, the Breather Tube Assembly interfaces with the engine cover, which encases the cylinder block and other internal components. The assembly ensures that any moisture or contaminants that enter the crankcase are efficiently expelled. This is particularly important in preventing the formation of sludge, which can impair the lubrication system and lead to increased wear on moving parts. By maintaining a clean and pressurized crankcase environment, the Breather Tube Assembly contributes to the overall stability and performance of the engine cover and the enclosed components.

Conclusion

In summary, the 4940845 Breather Tube Assembly is a vital element in the engine’s ventilation system, working in tandem with the cylinder block and engine cover to ensure a well-regulated and clean crankcase environment. This, in turn, supports the durability and efficiency of the engine as a whole.