4945227
Breather Tube
Cummins®

The Cummins 4945227 Breather Tube is a component designed to facilitate the proper ventilation of the engine crankcase in heavy-duty trucks. Its role is significant in maintaining the overall health and performance of the engine by allowing for the release of pressure and contaminants that accumulate within the crankcase during operation ¹.

Basic Concepts of Breather Tubes

A breather tube is a component that allows for the controlled release of gases and contaminants from the engine crankcase. It operates on the principle of maintaining a balance between the internal pressure of the crankcase and the external atmospheric pressure. This balance is crucial for the efficient operation of the engine, as it prevents the buildup of pressure that could lead to oil leaks or other mechanical issues ².

Purpose of the 4945227 Breather Tube

The 4945227 Breather Tube plays a role in the operation of a truck by ensuring that the engine crankcase remains at an optimal pressure. This is achieved by allowing gases and contaminants produced during engine operation to escape, while also preventing the ingress of external contaminants. By maintaining a clean and properly pressurized crankcase, the breather tube contributes to the engine’s longevity and performance ³.

Key Features

This Cummins part is constructed from durable materials that are resistant to the high temperatures and pressures found within the engine compartment. Its design includes features such as a filtration system to trap contaminants before they can enter the atmosphere, and a one-way valve that allows for the release of pressure without allowing external contaminants to enter the crankcase.

Benefits

The use of the 4945227 Breather Tube can lead to improved engine efficiency, as a well-ventilated crankcase allows for more consistent oil circulation and reduced friction. Additionally, the breather tube’s design can reduce maintenance needs by minimizing the risk of oil leaks and contamination. Its durable construction also enhances the component’s longevity, providing reliable performance over the vehicle’s lifespan.

Installation Process

To install the 4945227, begin by locating the existing breather tube on the engine crankcase. Disconnect any hoses or fittings attached to the old breather tube, taking care to note their positions for reattachment. Remove the old breather tube and clean the mounting area to ensure a secure fit for the new component. Position the 4945227 in place and reconnect any hoses or fittings, ensuring all connections are tight and secure. Finally, start the engine and check for any leaks or unusual noises that may indicate a problem with the installation.

Common Issues and Troubleshooting

Common issues with breather tubes can include blockages due to contaminants, leaks at the connections, or failure of the one-way valve. To address these problems, regularly inspect the breather tube and its connections for signs of wear or damage. Clean the breather tube and its filtration system as needed to prevent blockages. If leaks are detected, tighten the connections or replace any damaged components. In the case of valve failure, the breather tube may need to be replaced to restore proper function.

Maintenance Tips

To ensure the longevity and optimal performance of the 4945227, it is important to incorporate regular maintenance practices into your vehicle’s service schedule. This includes inspecting the breather tube and its connections for signs of wear or damage, cleaning the filtration system to prevent blockages, and ensuring all connections are tight and secure. Additionally, following the manufacturer’s recommended service intervals for oil changes and other maintenance tasks can help to maintain a clean and well-ventilated crankcase.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the automotive industry, particularly in the heavy-duty truck sector. The company’s product range includes a variety of engines and components designed to meet the demanding requirements of commercial and industrial applications.

Breather Tube (Part 4945227) Compatibility with Cummins Engines

The Breather Tube part number 4945227 is a critical component in the engine’s ventilation system, ensuring that the crankcase is properly ventilated to prevent pressure buildup. This part is designed to fit a variety of Cummins engines, providing a seamless integration into the engine’s overall design.

ISC CM2150 and ISL CM2150

The Breather Tube part 4945227 is compatible with the ISC CM2150 and ISL CM2150 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The breather tube ensures that the crankcase is properly ventilated, maintaining optimal engine performance and longevity.

ISC8.3 CM2250 and ISL9 CM2250

For the ISC8.3 CM2250 and ISL9 CM2250 engines, the Breather Tube part 4945227 is also a perfect fit. These engines are part of the next generation of Cummins offerings, providing enhanced performance and efficiency. The breather tube’s role in these engines is crucial for maintaining the integrity of the crankcase ventilation system.

QSC9 CM2250/QSL9 CM2250 and QSL9 CM2250

The Breather Tube part 4945227 is also compatible with the QSC9 CM2250, QSL9 CM2250, and QSL9 CM2350 L102 engines. These engines are designed for specific applications, often in the marine and industrial sectors. The breather tube ensures that the crankcase is properly ventilated, preventing pressure buildup and maintaining engine efficiency.

QSL9 CM2350 L102

Lastly, the Breather Tube part 4945227 fits the QSL9 CM2350 L102 engine. This engine is part of the latest generation of Cummins offerings, providing advanced features and performance. The breather tube is essential for maintaining the crankcase ventilation system, ensuring the engine operates at peak efficiency.

Role of Part 4945227 Breather Tube in Engine Systems

The part 4945227 Breather Tube is an essential component in maintaining the health and efficiency of engine systems, particularly in relation to the crankcase breather system.

In the crankcase breather system, the breather tube facilitates the release of gases that accumulate within the crankcase. As the engine operates, a mixture of air and fuel is compressed within the cylinders. Some of this mixture inevitably leaks past the piston rings into the crankcase. This leakage results in the buildup of pressure and the formation of blow-by gases, which consist of unburned fuel, combustion byproducts, and moisture.

The breather tube is designed to channel these gases away from the crankcase, preventing pressure buildup that could lead to oil leaks, reduced engine performance, and potential damage to seals and gaskets. By allowing these gases to escape, the breather tube helps maintain a stable pressure environment within the crankcase, ensuring optimal engine operation.

Additionally, the breather tube often connects to other components such as the air intake system or a PCV (Positive Crankcase Ventilation) valve. This connection allows the expelled gases to be redirected back into the intake manifold, where they can be burned during the combustion process. This not only helps in reducing emissions but also improves fuel efficiency by ensuring that unburned fuel is utilized.

In summary, the part 4945227 Breather Tube plays a significant role in the efficient functioning of engine systems by managing crankcase pressure and facilitating the recirculation of blow-by gases, contributing to both engine performance and environmental compliance.

Conclusion

The 4945227 Breather Tube is a vital component in the maintenance and operation of heavy-duty truck engines. By ensuring proper ventilation of the engine crankcase, it contributes to the engine’s longevity, performance, and efficiency. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.