5346784
Breather Tube
Cummins®

The Breather Air Tube 5346784, manufactured by Cummins, is a component designed for use in heavy-duty truck maintenance and operation. Cummins, a well-established name in the automotive industry, particularly in the heavy-duty truck sector, produces this part to enhance the efficiency and reliability of truck engines. The Breather Air Tube 5346784 is integral to maintaining the optimal functioning of the engine by facilitating proper ventilation and pressure regulation ¹.

Function and Operation

The Breather Air Tube 5346784 operates within the engine system by allowing air to enter and exit the crankcase. This process is vital for maintaining a balanced pressure environment within the engine. As the engine operates, it generates heat and pressure, which can lead to the formation of gases and vapors within the crankcase. This Cummins part plays a role in the ventilation system by providing a pathway for these gases and vapors to escape, thereby preventing pressure build-up that could adversely affect engine performance ².

Purpose of the Breather Air Tube 5346784

In the overall operation of a truck, the Breather Air Tube 5346784 contributes to engine performance and longevity by ensuring that the crankcase remains at an optimal pressure. This is achieved through the controlled release of gases and vapors, which helps in maintaining the engine’s efficiency. By facilitating proper ventilation, the Breather Air Tube aids in reducing the risk of engine wear and tear, thereby supporting the engine’s longevity ¹.

Key Features

The Breather Air Tube 5346784 is designed with specific characteristics that enhance its functionality and durability. It is constructed from high-quality materials that are resistant to the harsh conditions within the engine compartment. The design of the tube ensures efficient air flow, which is crucial for effective ventilation. Additionally, the tube is engineered to withstand the high temperatures and pressures that are common in heavy-duty truck engines ³.

Benefits

The advantages provided by the Breather Air Tube 5346784 include improved engine efficiency, reduced maintenance needs, and enhanced reliability. By maintaining optimal pressure within the crankcase, the tube contributes to smoother engine operation. This can lead to improved fuel efficiency and reduced emissions. Furthermore, the durable construction of the tube means that it requires less frequent replacement, which can reduce overall maintenance costs ¹.

Installation Process

Proper installation of the Breather Air Tube 5346784 involves several steps. Initially, the engine compartment should be inspected to ensure that there are no obstructions that could interfere with the tube’s function. The tube should then be securely attached to the designated fitting on the crankcase. It is important to use the appropriate tools to ensure a tight and secure fit, which is crucial for the tube’s effective operation ².

Common Issues and Troubleshooting

Typical problems associated with the Breather Air Tube may include blockages or leaks. Blockages can occur due to the accumulation of debris within the tube, which can impede air flow. Leaks may result from a loose connection or damage to the tube. Troubleshooting these issues involves inspecting the tube for any signs of damage or obstruction and making the necessary repairs or adjustments ³.

Maintenance Tips

To ensure optimal performance of the Breather Air Tube 5346784, regular inspection and cleaning are recommended. Inspecting the tube at regular intervals can help identify any potential issues before they become serious problems. Cleaning the tube to remove any accumulated debris can also help maintain efficient air flow. Additionally, ensuring that the tube is securely attached can prevent leaks and maintain the integrity of the ventilation system ¹.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a strong reputation in the automotive industry, particularly in the heavy-duty truck sector, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product range and global presence make it a trusted name in the industry.

Breather Air Tube in Cummins Engines

The Breather Air Tube, part number 5346784, is a critical component in the Cummins QSB6.7 CM2250 and QSB6.7 CM2350 B105 engines. This part is integral to the engine’s ventilation system, ensuring that the crankcase is properly ventilated to prevent the buildup of harmful gases and maintain optimal engine performance.

In the QSB6.7 CM2250 engine, the Breather Air Tube connects the crankcase ventilation system to the outside atmosphere. This connection allows for the expulsion of gases that are produced during the combustion process, preventing pressure buildup that could lead to engine damage. The tube is designed to route these gases safely away from the engine, maintaining a clean and efficient operation.

Similarly, in the QSB6.7 CM2350 B105 engine, the Breather Air Tube serves the same function. It ensures that the crankcase ventilation system is effectively vented, which is crucial for the longevity and reliability of the engine. The design of the tube in this engine variant is tailored to fit the specific architecture and requirements of the QSB6.7 CM2350 B105, ensuring a seamless integration with the engine’s components.

Both engines benefit from the use of the Breather Air Tube, as it helps to maintain the integrity of the crankcase ventilation system. This part is essential for preventing issues such as oil contamination and pressure-related failures, thereby contributing to the overall performance and durability of the engines ¹.

Role of Part 5346784 Breather Air Tube in Engine Systems

The part 5346784 Breather Air Tube is integral to maintaining the efficiency and reliability of engine systems by facilitating the proper ventilation of the crankcase. This component is designed to work in conjunction with the crankcase breather system, ensuring that any gases or vapors produced within the crankcase are effectively managed.

Integration with Plumbing Systems

In the context of engine plumbing, the Breather Air Tube connects to various hoses and pipes that form part of the ventilation network. It allows for the safe and controlled release of gases, preventing the buildup of pressure within the crankcase. This connection is vital for maintaining a balanced pressure environment, which in turn supports the smooth operation of the engine ².

Function within the Crankcase Breather System

The crankcase breather system is responsible for venting gases that accumulate as a result of blow-by—a phenomenon where combustion gases pass the piston rings and enter the crankcase. The Breather Air Tube plays a significant role here by providing a pathway for these gases to escape. It typically routes these gases back into the intake system, where they can be re-burned, thus reducing emissions and enhancing fuel efficiency.

By effectively managing the ventilation process, the Breather Air Tube helps in:

• Reducing the risk of oil contamination from blow-by gases.
• Maintaining optimal pressure levels within the crankcase.
• Ensuring that the engine operates within its designed parameters, thereby prolonging its lifespan ³.

Conclusion

In summary, the part 5346784 Breather Air Tube is a key component in the ventilation network of engine systems, working seamlessly with both plumbing and crankcase breather components to ensure efficient and reliable engine performance. Regular maintenance and proper installation are crucial to maximize the benefits of this part, contributing to the overall efficiency and longevity of heavy-duty truck engines.