3000379
Expansion Plug
Cummins®

The Cummins 3000379 Expansion Plug is a component designed for use in commercial trucks. It serves a specific function within the vehicle’s systems, contributing to the overall efficiency and reliability of the truck. Understanding its purpose and operation is key to maintaining the vehicle’s performance and longevity.

Basic Concepts of Expansion Plugs

An expansion plug is a device used in various automotive and industrial applications to seal openings in systems where pressure or temperature changes occur. It is designed to expand when heated, creating a tight seal that prevents leaks and maintains system integrity. These plugs are commonly used in engine and cooling systems to ensure that fluids remain contained under varying operational conditions ¹.

Purpose of the 3000379 Expansion Plug

The Cummins 3000379 Expansion Plug plays a role in the operation of a truck by sealing specific points within the engine or cooling system. Its function is to maintain the integrity of the system by preventing the escape of fluids, which could lead to decreased performance or damage to the engine. By ensuring a secure seal, the plug contributes to the stable operation of the truck under various conditions ².

Key Features

The Cummins 3000379 Expansion Plug is characterized by several key features that enhance its performance. It is made from durable materials that can withstand high temperatures and pressures. The design of the plug allows it to expand when heated, creating a reliable seal. Additionally, it is engineered to be compatible with specific systems, ensuring a precise fit and function ³.

Benefits

The use of the Cummins 3000379 Expansion Plug offers several benefits. It contributes to improved system integrity by providing a reliable seal that prevents leaks. This enhances the performance of the truck by ensuring that fluids remain within the system, maintaining pressure and temperature levels. Furthermore, the durability of the plug supports the longevity of the components it protects, reducing the need for frequent replacements.

Installation Process

Installing the Cummins 3000379 Expansion Plug requires careful attention to ensure a proper fit and function. The process involves cleaning the installation site, inserting the plug, and ensuring it is securely in place. Specific tools may be required to facilitate the installation, and it is important to follow manufacturer guidelines to avoid damage to the plug or the system.

Troubleshooting Common Issues

Common issues with expansion plugs may include leaks or failure to seal properly. These problems can arise from incorrect installation, damage to the plug, or changes in system pressure or temperature. Addressing these issues may involve inspecting the plug for damage, ensuring it is correctly installed, or replacing it if necessary. Regular maintenance can help prevent these issues.

Maintenance Tips

To ensure the longevity and effectiveness of the Cummins 3000379 Expansion Plug, regular maintenance is recommended. This includes inspecting the plug for signs of wear or damage, ensuring it remains securely in place, and replacing it according to manufacturer guidelines or when signs of failure are observed. Adhering to these practices can help maintain the performance of the truck’s systems.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. Its product range includes engines, filtration systems, and other components designed to enhance the performance and reliability of commercial vehicles.

Compatibility of Expansion Plug Part 3000379 with Cummins Engines

The Expansion Plug part 3000379, manufactured by Cummins, is designed to fit seamlessly with a variety of their engine models. This part is crucial for maintaining the integrity of the engine’s cooling system by ensuring proper sealing and preventing coolant leaks. Below is a detailed overview of the engines with which this expansion plug is compatible:

K-Series Engines

• K19
• K38
• K50

The K-Series engines, including the K19, K38, and K50, are known for their robust design and reliability. The expansion plug part 3000379 is engineered to fit these models, ensuring that the cooling system operates efficiently without any leaks.

KTA19 Series Engines

• KTA19GC
• KTA19GC CM558

The KTA19GC and KTA19GC CM558 engines benefit from the precise fit of the expansion plug part 3000379. This ensures that the cooling system remains sealed, which is vital for maintaining optimal engine performance and longevity.

QSK19 Series Engines

• QSK19 CM2350 K114
• QSK19 CM2350 K144G
• QSK19 CM500
• QSK19 CM850 MCRS
• QSK19G

The QSK19 series engines, including the QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, and QSK19G, are designed for heavy-duty applications. The expansion plug part 3000379 is specifically crafted to fit these engines, providing a reliable seal that is essential for the high-performance demands of these models.

This compatibility ensures that the expansion plug part 3000379 can be used across a range of Cummins engines, providing a consistent and reliable solution for maintaining the integrity of the cooling system.

Role of Part 3000379 Expansion Plug in Engine Systems

The part 3000379 expansion plug is an essential component in maintaining the integrity and efficiency of various engine systems. Its primary function is to seal and regulate the flow within different parts of the engine, ensuring optimal performance and preventing potential damage.

Flywheel Housing

In the flywheel housing, the expansion plug plays a significant role in sealing the housing to prevent any coolant or other fluids from leaking out. This ensures that the flywheel operates within the correct thermal environment, which is vital for its efficiency and longevity. The plug helps maintain the pressure and temperature stability necessary for the flywheel to function correctly.

Housing

Within the general housing of the engine, the expansion plug is used to seal off specific areas where fluid transfer or pressure regulation is required. This helps in maintaining the structural integrity of the housing by preventing fluid ingress or egress that could lead to corrosion or mechanical failure. The plug ensures that the housing remains a sealed environment, protecting internal components from external contaminants.

Flywheel

The flywheel relies on the expansion plug to maintain the correct fluid levels and pressure within its associated systems. By sealing off areas where fluid transfer occurs, the plug ensures that the flywheel receives the necessary lubrication and cooling, which are essential for its smooth operation and durability. This contributes to the overall efficiency and reliability of the flywheel in its role within the engine.

Water Transfer Tube

In the water transfer tube, the expansion plug is instrumental in regulating the flow of coolant. It ensures that the coolant is distributed evenly and efficiently throughout the engine, maintaining the optimal temperature for all components. The plug helps in preventing any leaks that could disrupt the coolant flow, thereby ensuring consistent cooling performance and protecting the engine from overheating.

Water Transfer Tubes

For the water transfer tubes, the expansion plug serves a similar function by sealing the tubes to ensure that coolant is effectively circulated throughout the engine. This is particularly important in multi-cylinder engines where consistent coolant distribution is necessary to maintain uniform temperatures across all cylinders. The plug helps in sustaining the efficiency of the cooling system, which is vital for the engine’s overall performance and longevity.

Conclusion

The Cummins 3000379 Expansion Plug is a critical component in the maintenance and operation of commercial trucks. Its role in sealing various parts of the engine ensures the integrity and efficiency of the cooling system, contributing to the overall performance and longevity of the vehicle. Regular maintenance and proper installation are essential to maximize the benefits of this Cummins part.