3895479
Expansion Plug
Cummins®

Introduction

The Cummins 3895479 Expansion Plug is a component designed for use in heavy-duty truck applications. It serves a specific function within the engine system, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and significance is key to maintaining and optimizing the performance of heavy-duty trucks.

Basic Concepts of Expansion Plugs

An expansion plug is a device used to seal openings in various systems, including automotive and industrial applications. It functions by expanding to fill the space it is inserted into, creating a secure seal that prevents leaks and maintains system integrity. These plugs are commonly used in engine blocks, transmission housings, and other components where sealing is critical ¹.

Purpose of the 3895479 Expansion Plug

The Cummins 3895479 Expansion Plug plays a role in the operation of heavy-duty trucks by sealing specific openings within the engine system. Its function includes managing pressure and preventing leaks, which are vital for maintaining engine performance and efficiency. By ensuring a tight seal, it helps in preserving the integrity of the engine’s internal environment.

Key Features

The 3895479 Expansion Plug is characterized by several key features that enhance its performance and durability. It is made from high-quality materials that resist corrosion and wear. The design includes precise dimensions to ensure a perfect fit and effective sealing. Additionally, it may incorporate technological aspects such as a special coating or threading that improves its functionality under various operating conditions.

Benefits

The advantages provided by the 3895479 Expansion Plug include improved engine efficiency through effective sealing, enhanced safety by preventing leaks that could lead to engine damage, and reliability in diverse operating conditions. Its durable construction ensures long-term performance, contributing to the overall reliability of the heavy-duty truck.

Installation Process

Proper installation of the 3895479 Expansion Plug involves several steps to ensure it functions correctly. It is important to clean the installation site thoroughly to remove any debris that could affect the seal. The plug should be inserted with the correct orientation and tapped gently into place using a suitable tool. Care should be taken to avoid over-tightening, which could damage the plug or the surrounding components.

Troubleshooting and Maintenance

Identifying common issues related to the 3895479 Expansion Plug involves checking for signs of leaks or unusual engine behavior. Diagnostic methods may include visual inspection and pressure testing. Maintenance practices to ensure longevity and optimal performance include regular inspection for wear or damage and cleaning the installation site during routine maintenance checks.

Common Failure Modes

Typical failure modes observed in expansion plugs include corrosion, wear, and improper installation. Symptoms of failure may include leaks or engine performance issues. Preventive measures involve using high-quality replacement parts, following proper installation procedures, and conducting regular maintenance checks to identify and address potential issues early.

Replacement Guidelines

Replacing the 3895479 Expansion Plug should be considered when signs of wear, damage, or failure are detected. Recommended intervals for replacement may vary depending on the operating conditions and the manufacturer’s guidelines. The replacement process involves removing the old plug, cleaning the installation site, and installing a new plug following the correct procedures to ensure a secure seal.

Cummins Overview

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 of innovation and quality, Cummins has established a strong reputation in the automotive and industrial sectors for producing reliable and efficient products. The company’s extensive product range and commitment to excellence make it a preferred choice for heavy-duty applications ².

Compatibility of Expansion Plug Part 3895479 with Cummins Engines

The Expansion Plug part 3895479, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in ensuring the proper sealing and functionality of the engine’s cooling system. Here is a detailed look at the engines that are compatible with this specific expansion plug:

ISM Series Engines

• ISM CM570
• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN
• QSM11 CM570
• QSM11 CM876

The ISM series engines, including the ISM CM570, ISM CM570/870, ISM CM876, ISM11 CM876 SN, QSM11 CM570, and QSM11 CM876, are designed for heavy-duty applications and benefit from the precise fit of the expansion plug to maintain optimal cooling efficiency.

ISX Series Engines

• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• QSX11.9 CM2250 ECF

The ISX series engines, such as the ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12/ISX11.9 CM2250, and QSX11.9 CM2250 ECF, are known for their high power output and reliability. The expansion plug part 3895479 is specifically engineered to fit these engines, ensuring that the cooling system operates without leaks or inefficiencies.

L10 Series Engines

• L10 CELECT
• L10 GAS
• L10 MECHANICAL

The L10 series engines, including the L10 CELECT, L10 GAS, and L10 MECHANICAL, are versatile and used in a variety of applications. The expansion plug part 3895479 is compatible with these engines, providing a reliable seal that is crucial for maintaining the engine’s performance.

M11 Series Engines

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

The M11 series engines, such as the M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL, are designed for medium-duty applications. The expansion plug part 3895479 fits these engines perfectly, ensuring that the cooling system is sealed effectively.

QSK Series Engines

• QSK45 CM500
• QSK60 CM500
• QSK60G
• QSK78 CM500
• QSK95 CM2350 K111
• QSK95 CM2350 K113

The QSK series engines, including the QSK45 CM500, QSK60 CM500, QSK60G, QSK78 CM500, QSK95 CM2350 K111, and QSK95 CM2350 K113, are known for their durability and efficiency. The expansion plug part 3895479 is compatible with these engines, providing a critical seal that helps maintain the cooling system’s integrity.

QSC Series Engine

• QSC8.3 CM850 (CM2850)

The QSC8.3 CM850 (CM2850) engine is another model that is compatible with the expansion plug part 3895479. This part ensures that the engine’s cooling system is properly sealed, contributing to its overall performance and longevity.

This compatibility ensures that the expansion plug part 3895479 can be used across a wide range of Cummins engines, providing a reliable and efficient seal for the cooling system.

Role of Part 3895479 Expansion Plug in Engine Systems

The expansion plug, identified by part number 3895479, is an essential component in various engine systems, contributing to the overall functionality and efficiency of the engine. Here’s how it integrates with different components:

Cylinder Block and Cylinder Head

The expansion plug plays a significant role in the cylinder block and cylinder head assemblies. It helps maintain the structural integrity of these components by filling any voids or gaps that may occur during manufacturing or due to wear and tear. This ensures that the combustion chamber remains sealed, preventing any loss of compression which could lead to reduced engine performance.

Cylinder Top Level Assembly (TLA) Head

In the cylinder TLA head, the expansion plug assists in maintaining the precise dimensions and alignment of the cylinder bores. This is vital for the proper functioning of the piston and connecting rod assembly, ensuring smooth and efficient operation of the engine.

Engine Piston Kit and Connecting Rod

When integrated with the engine piston kit and connecting rod, the expansion plug helps in maintaining the optimal clearance between the piston and the cylinder wall. This is important for reducing friction and wear, thereby enhancing the longevity and performance of the engine.

Rocker Lever and Rocker Lever Housing

In the rocker lever and rocker lever housing, the expansion plug ensures that there is no undue stress or misalignment. This is particularly important in high-performance engines where precision and reliability are paramount.

Heat Exchanger and Heat Exchanger Housing

Within the heat exchanger and its housing, the expansion plug aids in maintaining the structural stability of the housing. This is essential for efficient heat dissipation, which is critical for maintaining optimal engine operating temperatures.

Oil Manifold and Injectors

The expansion plug also finds its use in the oil manifold and injectors. In these components, it helps in sealing any potential leaks, ensuring that the oil and fuel delivery systems operate efficiently without any loss of pressure or flow.

Emissions Rebuild Kit

In an emissions rebuild kit, the expansion plug contributes to the sealing of various components, ensuring that the emissions control systems function as intended. This is important for meeting regulatory standards and reducing the environmental impact of the engine.

Performance Parts and Service Block Kit

For performance parts and service block kits, the expansion plug is often used to fine-tune the engine’s components, ensuring that they operate at peak efficiency. This is particularly beneficial in high-performance applications where every component must work in harmony to achieve optimal results.

Conclusion

In summary, the expansion plug (part 3895479) is a versatile component that enhances the functionality and reliability of various engine systems. Its role in sealing, aligning, and stabilizing different engine components cannot be overstated, making it a valuable part in both standard and high-performance engine applications.