3907555
Expansion Plug
Cummins®

The 3907555 Expansion Plug is a component manufactured by Cummins, a well-established name in the commercial truck industry. This plug serves a specific function within the operational framework of commercial trucks, contributing to the overall efficiency and reliability of the vehicle. Cummins, known for its robust and dependable engine solutions, produces this expansion plug to meet the demanding requirements of heavy-duty applications.

Basic Concepts of Expansion Plugs

An expansion plug is a device used in various automotive and heavy-duty truck systems to seal openings or passages within engines and other mechanical systems. It functions by expanding upon installation to create a tight seal, preventing the passage of fluids or gases. This mechanism is crucial in maintaining system integrity and ensuring that components operate within their designed parameters. Expansion plugs find applications in cooling systems, engine blocks, and other areas where sealing is necessary to prevent leaks or maintain pressure ¹.

Purpose of the 3907555 Expansion Plug

The 3907555 Expansion Plug plays a role in the operation of a truck by sealing specific points within the engine or cooling system. Its primary function is to prevent the escape of coolant or other fluids, thereby maintaining system pressure and efficiency. By ensuring a secure seal, this plug contributes to the overall performance and longevity of the truck’s engine and cooling system ².

Key Features

The 3907555 Expansion Plug is characterized by several key features that enhance its performance and reliability. It is constructed from high-quality materials, ensuring durability and resistance to corrosion. The design of the plug allows for easy installation and removal, while its expansion mechanism guarantees a secure seal. Additionally, the plug is engineered to withstand high temperatures and pressures, making it suitable for the demanding conditions encountered in commercial truck operations.

Benefits

The use of the 3907555 Expansion Plug offers several benefits to fleet operators and truck maintenance professionals. It contributes to improved system efficiency by ensuring that coolant and other fluids remain within the system, reducing the need for frequent top-ups. The plug’s durable construction and reliable sealing mechanism enhance the longevity of the truck’s engine and cooling system, potentially reducing maintenance costs and downtime. Furthermore, the ease of installation and removal of the plug simplifies maintenance procedures, offering cost-saving advantages ³.

Installation Process

Installing the 3907555 Expansion Plug requires attention to detail to ensure a proper fit and seal. The process involves cleaning the installation site to remove any debris or old sealant, inserting the plug into the opening, and using the appropriate tools to expand the plug until it creates a secure seal. It is important to follow manufacturer guidelines to ensure correct fitting and to avoid over-tightening, which could damage the plug or the surrounding components.

Troubleshooting Common Issues

Common issues associated with expansion plugs include leaks due to improper installation, corrosion, or damage to the plug. To troubleshoot these problems, it is important to inspect the plug and the surrounding area for signs of wear or damage. If a leak is detected, the plug may need to be removed and replaced. Regular inspections and maintenance can help identify potential issues before they lead to more significant problems.

Maintenance Tips

Regular maintenance of the 3907555 Expansion Plug is important to ensure its continued performance and reliability. This includes periodic inspections to check for signs of wear, corrosion, or leaks. Cleaning the plug and the surrounding area can help prevent the buildup of debris that could interfere with the seal. If the plug shows signs of damage or if leaks are detected, it may be necessary to replace the plug to maintain system integrity.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s product range includes engines, components, and technologies that power commercial vehicles, equipment, and power generation systems worldwide.

Compatibility of Expansion Plug Part 3907555 with Cummins Engines

The Expansion Plug part 3907555, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is crucial for maintaining the integrity of the engine’s cooling system by preventing leaks and ensuring proper sealing. Below is a detailed breakdown of the engines with which this expansion plug is compatible:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of the B series family, known for their robust performance and reliability. The expansion plug part 3907555 is engineered to fit seamlessly into these engines, ensuring optimal sealing and preventing any coolant leaks.

6C8.3 and C8.3 G Engines

The 6C8.3 and C8.3 G engines are part of the C series, which is designed for heavy-duty applications. The expansion plug part 3907555 is compatible with these engines, providing a reliable seal that is essential for maintaining the engine’s cooling system integrity.

B3.9 G, B5.9 G, and B5.9 GAS PLUS CM556 Engines

The B3.9 G, B5.9 G, and B5.9 GAS PLUS CM556 engines are part of the B series, with the latter incorporating advanced gas technology. The expansion plug part 3907555 fits these engines, ensuring that the cooling system remains sealed and efficient.

C GAS PLUS CM556 and ISB5.9G CM2180 Engines

The C GAS PLUS CM556 and ISB5.9G CM2180 engines are part of the C and ISB series, respectively. Both engines benefit from the expansion plug part 3907555, which provides a critical seal to prevent coolant leaks and maintain system efficiency.

G5.9, G5.9 CM558, and G8.3 Engines

The G5.9, G5.9 CM558, and G8.3 engines are part of the G series, known for their versatility and performance. The expansion plug part 3907555 is compatible with these engines, ensuring that the cooling system remains sealed and operational.

ISC CM554, ISL CM554, and QSC8.3 CM554 Engines

The ISC CM554, ISL CM554, and QSC8.3 CM554 engines are part of the C series, designed for a range of applications. The expansion plug part 3907555 fits these engines, providing a reliable seal that is essential for maintaining the cooling system’s integrity.

L8.9, QSL9 CM554, and ISB5.9G CM2180 Engines

The L8.9, QSL9 CM554, and ISB5.9G CM2180 engines are part of the L and ISB series, known for their durability and performance. The expansion plug part 3907555 is compatible with these engines, ensuring that the cooling system remains sealed and efficient.

By ensuring compatibility with a wide range of Cummins engines, the expansion plug part 3907555 plays a vital role in maintaining the performance and reliability of these engines.

Role of Part 3907555 Expansion Plug in Engine Systems

The 3907555 Expansion Plug is an integral component in various engine systems, ensuring optimal performance and efficiency. Its primary function is to seal and secure specific areas within the engine, preventing unwanted leaks and maintaining system integrity.

Integration with Cam Follower and Cam Follower Lever

In systems involving the cam follower and cam follower lever, the 3907555 Expansion Plug ensures that the cam follower operates within a sealed environment. This prevents any potential leaks that could affect the precision and timing of the cam follower lever, which is essential for the smooth operation of the valve train.

Function in Cam Follower Shaft and Cylinder Head

When integrated with the cam follower shaft and cylinder head, the 3907555 Expansion Plug plays a significant role in maintaining the structural integrity of these components. By sealing off specific passages, it helps in preserving the pressure and fluid dynamics necessary for the efficient functioning of the cylinder head.

Role in Fuel System Components

In the fuel filter and fuel filter head, the 3907555 Expansion Plug ensures that the fuel system remains sealed, preventing any contamination or leaks that could compromise fuel quality and engine performance. This is particularly important in high-performance engines where fuel purity is paramount.

Application in Performance Parts

For performance parts, the 3907555 Expansion Plug is often used to enhance the sealing capabilities of modified engine components. This ensures that any upgrades or enhancements to the engine do not introduce new points of failure due to leaks or pressure loss.

Interaction with Rocker Lever, Rocker Lever Shaft, and Rocker Lever Support

In systems involving the rocker lever, rocker lever shaft, and rocker lever support, the 3907555 Expansion Plug helps in maintaining the necessary seals around these components. This is vital for ensuring that the rocker lever system operates efficiently, without any interference from external elements or leaks.

Overall, the 3907555 Expansion Plug is a versatile component that enhances the reliability and performance of various engine systems by providing essential sealing and structural support.

Conclusion

The 3907555 Expansion Plug is a critical component in the maintenance and operation of Cummins engines. Its role in sealing and securing various engine systems ensures optimal performance, efficiency, and longevity. By understanding its key features, benefits, and proper installation and maintenance procedures, fleet operators and maintenance professionals can ensure the continued reliability and performance of their vehicles.