4068740
Breather Tube
Cummins®

The Cummins 4068740 Breather Tube is a component designed for use in commercial trucks. It serves a specific function within the engine system, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and operation is key to maintaining the health and performance of commercial trucks.

Basic Concepts of Breather Tubes

Breather tubes are components found in engine systems that allow for the release of pressure and the exchange of air within the engine compartment. They play a role in maintaining a balanced pressure environment, which is important for the proper functioning of engine components. By allowing air to circulate and escape, breather tubes help prevent the buildup of harmful gases and moisture, which can lead to engine wear and reduced performance ¹.

Purpose of the Cummins 4068740 Breather Tube

The Cummins 4068740 Breather Tube is designed to facilitate the ventilation of the engine’s crankcase. It allows for the release of pressure and the circulation of air, which helps in removing contaminants and moisture that may accumulate during engine operation. This function is important for maintaining the cleanliness of the engine oil and the overall health of the engine components ².

Key Features

The Cummins 4068740 Breather Tube is constructed with materials and design elements that enhance its durability and performance. It is made from high-quality materials that resist corrosion and wear, ensuring longevity in demanding commercial truck environments. The design of the breather tube includes features that optimize air flow and pressure release, contributing to its effective operation within the engine system ³.

Benefits of Using the Cummins 4068740 Breather Tube

Utilizing the Cummins 4068740 Breather Tube in a truck’s engine system can lead to several advantages. It contributes to improved engine performance by ensuring a clean and balanced crankcase environment. This can result in extended engine longevity and increased reliability, as the breather tube helps prevent the accumulation of contaminants that can lead to engine wear ⁴.

Installation Considerations

Proper installation of the Cummins 4068740 Breather Tube is important for its effective operation. It is recommended to follow manufacturer guidelines for installation, ensuring that all connections are secure and that the breather tube is properly positioned within the engine system. Attention to detail during installation can help prevent issues such as leaks or reduced performance.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 4068740 Breather Tube is important for its continued effective operation. This includes periodic inspection for signs of wear or damage, and cleaning or replacement as necessary. Common issues that may arise include blockages or leaks, which can be addressed through troubleshooting steps such as cleaning the breather tube or checking for proper installation.

Manufacturer Information - Cummins

Cummins is a well-established manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a history of producing reliable and high-performance engine components, Cummins has built a reputation for excellence. Their products, including the 4068740 Breather Tube, are designed with attention to detail and a focus on meeting the demanding requirements of commercial truck applications.

Cummins Breather Tube 4068740 Compatibility

The Cummins Breather Tube part number 4068740 is designed to fit seamlessly within a range of engine models, ensuring optimal performance and reliability. This part is integral to the engine’s ventilation system, facilitating the release of excess pressure and preventing the build-up of harmful gases.

QST30 Engines

The QST30 engine series benefits significantly from the installation of the Breather Tube 4068740. This part ensures that the engine operates efficiently by maintaining the correct pressure levels within the crankcase, which is crucial for the longevity and performance of the engine.

CM552 Engines

Similarly, the CM552 engine series is compatible with the Breather Tube 4068740. This part is engineered to fit precisely within the engine’s design, providing a reliable seal and preventing oil contamination. The Breather Tube ensures that the engine’s ventilation system functions as intended, contributing to the overall efficiency and durability of the engine.

Grouped Engine Compatibility

Both the QST30 and CM552 engines share common design principles that make the Breather Tube 4068740 a versatile and essential component. The compatibility of this part across these engines underscores its importance in maintaining the engine’s health and performance. By ensuring proper ventilation, the Breather Tube helps to reduce the risk of engine damage and extends the service life of the engine components.

Role of Part 4068740 Breather Tube in Engine Systems

The part 4068740 Breather Tube is an essential component in maintaining the health and efficiency of engine systems by facilitating the proper ventilation of the crankcase. This breather tube is designed to allow the escape of gases that accumulate within the crankcase during engine operation.

When an engine runs, it produces not only power but also a variety of gases, including unburned fuel, water vapor, and combustion byproducts. These gases can build up pressure within the crankcase if not properly ventilated. The breather tube addresses this issue by providing a pathway for these gases to exit the crankcase, thereby preventing excessive pressure build-up that could lead to oil leaks, reduced engine performance, or even damage to engine components.

In addition to pressure regulation, the breather tube plays a significant role in maintaining oil cleanliness. By allowing contaminants and moisture to be expelled from the crankcase, the breather tube helps ensure that the oil remains in optimal condition for lubricating engine parts. This is particularly important in high-performance engines where oil quality directly impacts engine longevity and efficiency.

Furthermore, the breather tube works in conjunction with the Positive Crankcase Ventilation (PCV) system. The PCV system recirculates crankcase gases back into the intake manifold, where they are burned in the combustion chamber. This not only reduces emissions but also improves fuel efficiency. The breather tube ensures that the PCV system functions correctly by managing the flow of gases and preventing any backflow that could disrupt the system’s operation.

Conclusion

In summary, the Cummins 4068740 Breather Tube is integral to the proper functioning of the crankcase ventilation system. It ensures that gases are effectively managed, pressure is regulated, and oil quality is maintained, contributing to the overall performance and reliability of the engine.