3420901
Expansion Plug
Cummins®

The Cummins 3420901 Expansion Plug is a component designed for use in commercial trucks. It serves a specific function within the truck’s system, contributing to the overall operation and efficiency of the vehicle. An expansion plug, in general, is a device used in automotive applications to manage the effects of thermal expansion within a system. It plays a role in maintaining system integrity by allowing for the expansion and contraction of fluids or gases due to temperature changes ¹.

Basic Concepts of Expansion Plugs

An expansion plug is a mechanical device that allows for the safe release of pressure within a system as temperatures rise and materials expand. It operates on the principle of thermal expansion, which states that most materials increase in volume when heated ². In automotive applications, expansion plugs are essential for preventing damage to components by providing a controlled release of excess pressure. This mechanism ensures that the system can withstand temperature fluctuations without compromising safety or performance.

Purpose of the Cummins 3420901 Expansion Plug

The Cummins 3420901 Expansion Plug is specifically designed to play a role in the pressure and temperature management within the system it is installed in. By allowing for the controlled release of pressure, it helps maintain optimal operating conditions, ensuring the system functions efficiently and safely. This plug is integral to the system’s ability to handle thermal expansion, thereby contributing to the overall reliability and performance of the truck ³.

Key Features

The Cummins 3420901 Expansion Plug boasts several key features that enhance its performance and durability. It is constructed from high-quality materials, ensuring resistance to corrosion and wear. The design incorporates precise engineering to ensure accurate pressure release. Additionally, it features a secure fitting mechanism that ensures it remains in place under varying conditions, contributing to its effectiveness and longevity ⁴.

Benefits

Utilizing the Cummins 3420901 Expansion Plug offers several advantages. It contributes to improved system reliability by effectively managing pressure and temperature, which can lead to enhanced safety during operation. Its durable construction and precise design can result in potential cost savings over time, as it reduces the need for frequent replacements or repairs. The plug’s ability to maintain system integrity under varying conditions makes it a valuable component for commercial truck applications.

Installation Considerations

Proper installation of the Cummins 3420901 Expansion Plug is vital for its effective operation. It is important to follow manufacturer recommendations regarding placement and securing within the system. Ensuring the plug is correctly installed will help maintain system performance and safety, preventing issues that could arise from improper installation.

Troubleshooting and Maintenance

Regular inspections and maintenance are recommended to ensure the longevity and effectiveness of the Cummins 3420901 Expansion Plug. Troubleshooting common issues may involve checking for signs of wear or damage, ensuring the plug is securely in place, and verifying that it operates within the specified pressure and temperature ranges. Adhering to recommended replacement schedules can also help maintain system reliability.

Cummins Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation in automotive components. With a rich history of providing reliable and high-performance parts, Cummins continues to play a significant role in advancing the technology and efficiency of commercial vehicles. The company’s dedication to excellence is evident in its wide range of products, including the Cummins 3420901 Expansion Plug, which embodies Cummins’ standards for quality and performance.

Compatibility of Expansion Plug Part 3420901 with Cummins Engines

The Expansion Plug part 3420901, manufactured by Cummins, is designed to fit seamlessly with a range of Cummins engines. This part is crucial for ensuring the integrity and functionality of the engine’s cooling system. Below is a detailed overview of its compatibility with the specified engine models:

Cummins Engines Compatible with Expansion Plug Part 3420901

• QSV81G and QSV91G Engines The Expansion Plug part 3420901 is specifically engineered to fit the QSV81G and QSV91G engines. These engines are known for their robust performance and reliability, making the expansion plug a vital component in maintaining their operational efficiency.

• QSW/QSV82 Engines The QSW/QSV82 engines also benefit from the use of the Expansion Plug part 3420901. This part ensures that the cooling system can expand and contract as needed, preventing leaks and maintaining the engine’s optimal temperature.

• QSW27 and QSW36 Engines The QSW27 and QSW36 engines are designed to work with the Expansion Plug part 3420901. This compatibility is essential for the longevity and performance of these engines, as the expansion plug helps to manage thermal expansion within the cooling system.

• QSW73 Engine The QSW73 engine is another model that is compatible with the Expansion Plug part 3420901. This part plays a critical role in the engine’s cooling system, ensuring that it can handle the stresses of thermal expansion without compromising performance.

Each of these engines relies on the Expansion Plug part 3420901 to maintain the integrity of their cooling systems. This compatibility ensures that the engines can operate efficiently and reliably, with the expansion plug providing the necessary flexibility and durability.

Role of Part 3420901 Expansion Plug in Engine Systems

The part 3420901 Expansion Plug is integral to the efficient operation of various engine components. It ensures that the system maintains optimal pressure and temperature levels, which are essential for the longevity and performance of the engine.

Integration with Camshaft and Camshaft Assembly

In the context of the camshaft and camshaft assembly, the expansion plug helps in maintaining the integrity of the lubrication system. Proper pressure within the system ensures that the camshaft receives adequate lubrication, reducing wear and tear on the camshaft bearings and lobes.

Function within Heat Exchanger Components

The expansion plug plays a significant role in the heat exchanger and its associated components, such as the heat exchanger assembly support and heat exchanger mounting supply. It helps in regulating the pressure within the heat exchanger, ensuring efficient heat transfer and preventing overheating of the engine coolant.

Contribution to Flywheel Assembly and Housing

In the flywheel assembly housing and flywheel housing, the expansion plug assists in maintaining the structural integrity of the housing. This is particularly important in the flywheel sub-assembly housing, where pressure fluctuations can lead to leaks or structural failures.

Support in Heat Exchanger Equipped Supply

When integrated with the heat exchanger equipped supply and heat exchanger support, the expansion plug ensures that the supply lines remain pressurized correctly. This is vital for the consistent performance of the heat exchanger and the overall cooling system.

Role in Housing and Flywheel Components

The expansion plug is also essential in the housing and flywheel components, such as the housing flywheel sub-assembly. It helps in stabilizing the pressure within these components, which is crucial for the smooth operation of the flywheel and the prevention of mechanical failures.

Conclusion

In summary, the Cummins 3420901 Expansion Plug is a key component in various engine systems, ensuring that pressure and temperature are maintained within optimal ranges. This contributes to the efficient and reliable operation of the engine, enhancing its performance and durability.