4974923
Breather Tube
Cummins®

Introduction

The Cummins 4974923 Breather Tube is a component designed for heavy-duty trucks, contributing to the engine system’s efficiency and reliability. Understanding its purpose and operation is essential for maintaining the truck’s performance and longevity.

Purpose and Function

The breather tube manages pressure and ventilation within the crankcase, allowing for the release of gases and vapors that accumulate during engine operation. This function is crucial for the proper lubrication of engine components and the prevention of oil contamination ¹.

Key Features

Constructed with specific design and material considerations, this Cummins part is made from high-quality materials that withstand harsh engine conditions. It features secure connection types for a tight fit, minimizing leak risks. Unique design elements may include filters or baffles to trap contaminants, enhancing efficiency ².

Benefits

Utilizing the Cummins 4974923 Breather Tube offers several advantages, including improved engine performance through optimal crankcase ventilation. Its design aids in engine longevity by protecting it from pressure-related damage. Additionally, its ease of maintenance makes it a practical choice for fleet managers and technicians ³.

Installation and Compatibility

Proper installation of the breather tube is essential for its effective operation. The process involves securing the tube within the engine system, which may require specific tools to ensure a tight and secure fit. Compatibility with various engine models is crucial, ensuring the breather tube functions correctly within the intended application.

Maintenance and Troubleshooting

Regular maintenance of the breather tube is recommended to ensure its continued efficient operation. This may include periodic checks for signs of wear or damage and cleaning or replacing the tube as necessary. Common issues such as blockages or leaks can be addressed through troubleshooting steps like inspecting connections and cleaning or replacing components as needed.

Safety Considerations

When working with the breather tube, it is important to follow safety practices to protect both the technician and the equipment. This includes ensuring the engine is off and cool before beginning any work, using the appropriate tools and personal protective equipment, and following manufacturer guidelines for installation and maintenance.

Environmental Impact

The efficient design of the breather tube contributes to reduced emissions by ensuring the engine operates within optimal parameters. This not only benefits the environment but also enhances the overall performance and fuel efficiency of the truck ⁴.

Cummins Overview

Cummins Inc. is a leader in manufacturing high-quality components for the automotive industry, with a strong focus on heavy-duty trucks. The company’s history is marked by innovation and a commitment to producing reliable and efficient parts that meet the demanding requirements of commercial vehicle applications.

Compatibility with Cummins Engines

The Breather Tube part number 4974923, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is crucial for maintaining the proper ventilation and pressure balance within the engine’s crankcase. Below is a detailed breakdown of the engines with which this breather tube is compatible:

Compatible Engines

• ISZ13 CM2150 Z105
• QSZ13 CM2150 Z101
• QSZ13 CM2150 Z102

These engines share similar design elements, particularly in their crankcase ventilation systems, making the breather tube 4974923 a suitable fit. The breather tube ensures that any excess pressure within the crankcase is safely vented, preventing oil leaks and maintaining engine efficiency.

Additional Compatible Engine

• Z13 Z108G

The Z13 Z108G engine also integrates the breather tube 4974923 seamlessly. This engine, while distinct in some specifications, shares the critical requirement for effective crankcase ventilation, which this breather tube provides.

Grouping of Compatible Engines

The engines ISZ13 CM2150 Z105, QSZ13 CM2150 Z101, and QSZ13 CM2150 Z102 can be grouped together due to their similar configurations and shared use of the breather tube 4974923. These engines are often found in similar applications, benefiting from the same maintenance and performance enhancements provided by this part.

The Z13 Z108G engine, while differing in some aspects, also relies on the breather tube 4974923 for its ventilation needs, ensuring that it operates efficiently and reliably.

Role of Part 4974923 Breather Tube in Engine Systems

The part 4974923 Breather Tube is a critical component in maintaining the health and efficiency of engine systems. Its primary function is to manage the pressure within the crankcase by allowing air and gases to escape, thus preventing a buildup that could lead to engine damage.

Interaction with the Crankcase

The Breather Tube is directly connected to the crankcase, a vital part of the engine that houses the crankshaft. As the engine operates, it generates gases and pressure within the crankcase. The Breather Tube provides a pathway for these gases to be released, ensuring that the pressure remains within safe limits. This process helps in maintaining the integrity of the crankcase seals and gaskets, which are sensitive to excessive pressure.

Contribution to Engine Performance

By regulating the pressure within the crankcase, the Breather Tube indirectly contributes to the overall performance of the engine. Consistent pressure management ensures that the engine components, such as pistons and bearings, operate within their designed parameters. This results in smoother engine operation, reduced wear on components, and potentially extended engine life.

Role in Emission Control

In modern engine systems, the Breather Tube is often part of a more comprehensive emission control strategy. The gases released from the crankcase may be routed to the intake system, where they are burned in the combustion process. This not only helps in reducing emissions but also ensures that any unburned hydrocarbons are utilized, contributing to more efficient fuel consumption.

Integration with Other Systems

The Breather Tube may also interact with other engine systems, such as the Positive Crankcase Ventilation (PCV) system. In such setups, the Breather Tube works in conjunction with the PCV valve to manage crankcase pressure more effectively. This integration enhances the engine’s ability to handle varying operating conditions, from idle to high-performance scenarios.

Conclusion

The Cummins 4974923 Breather Tube plays a significant role in ensuring the crankcase operates within optimal pressure levels, contributing to engine performance, emission control, and the longevity of engine components. Its design and functionality are crucial for maintaining the efficiency and reliability of heavy-duty trucks.