206742
Expansion Plug
Cummins®

Introduction

The Cummins 206742 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 truck operations. Understanding its purpose and significance is vital for maintaining commercial trucks effectively.

Basic Concepts of Expansion Plugs

An expansion plug is a device used to seal openings in various systems, such as engines or cooling systems, to prevent leaks and maintain system integrity. It expands when inserted into a hole, creating a tight seal. These plugs find applications in both automotive and industrial settings, where sealing is necessary to ensure system performance and safety ¹.

Purpose of the 206742 Expansion Plug

The Cummins 206742 Expansion Plug plays a role in the operation and maintenance of commercial trucks by sealing specific openings within the engine or cooling system. This sealing function helps maintain system pressure, prevent leaks, and ensure the efficient operation of the truck’s engine and cooling components ².

Key Features

The 206742 Expansion Plug is characterized by several design elements that enhance its effectiveness and durability. These include its material composition, which is chosen for its ability to withstand high temperatures and pressures, and its design, which allows for easy installation and a secure fit. Manufacturing standards ensure that each plug meets the necessary quality and performance criteria ³.

Benefits

Using the 206742 Expansion Plug offers several advantages. It contributes to improved system integrity by providing a reliable seal, which is crucial for the efficient operation of commercial trucks. The plug’s design also facilitates ease of installation, reducing downtime during maintenance procedures. Additionally, its durability and effectiveness can lead to long-term cost savings for fleet operators by minimizing the need for frequent replacements or repairs.

Installation Process

Installing the 206742 Expansion Plug requires following a specific procedure to ensure proper fitting and function. Preparatory steps include cleaning the installation site to remove any debris or old sealant. The necessary tools for installation may include a hammer or mallet to gently tap the plug into place. Best practices involve ensuring the plug is fully seated and expanded to achieve a secure seal.

Troubleshooting and Maintenance

Common issues with expansion plugs may include leaks or difficulty in removal for replacement. Diagnosing problems often involves inspecting the plug and surrounding areas for signs of wear or damage. Maintenance tips to prolong the lifespan of the 206742 Expansion Plug include regular inspections during routine maintenance checks and ensuring it is properly installed. Addressing issues promptly can help maintain optimal performance and prevent more significant problems.

Safety Considerations

When handling, installing, or maintaining the 206742 Expansion Plug, it is important to observe safety guidelines and precautions. This includes wearing appropriate personal protective equipment (PPE) to protect against injuries from sharp edges or hot surfaces. Following manufacturer instructions for installation and maintenance can also help prevent accidents and ensure user safety.

Cummins Overview

Cummins Inc. is a well-established company in the commercial truck industry, known for its wide range of products and commitment to quality and reliability. The company’s history of innovation and excellence provides a solid foundation for the quality and performance of the 206742 Expansion Plug. Cummins’ reputation in the industry underscores the trust and confidence that can be placed in their products for commercial truck applications.

Compatibility of Expansion Plug 206742 with Cummins Engines

The Expansion Plug 206742, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in maintaining the structural integrity of the engine’s cooling system by sealing expansion joints and preventing coolant leaks.

K38 and K50 Engines

The Expansion Plug 206742 is compatible with the K38 and K50 engines. These engines are known for their robust design and are often used in heavy-duty applications, requiring reliable sealing solutions to ensure optimal performance.

KTA38GC CM558

The KTA38GC CM558 engine also integrates seamlessly with the Expansion Plug 206742. This engine is typically used in marine and industrial applications, where durability and efficiency are paramount.

QSK38 Series

The QSK38 CM2150 MCRS and QSK38 CM850 MCRS engines are part of the QSK38 series, which benefits from the use of the Expansion Plug 206742. These engines are designed for high-performance applications, and the expansion plug ensures that the cooling system remains intact under varying operational conditions.

QSK45 Series

The QSK45 CM500 engine is another member of the QSK series that is compatible with the Expansion Plug 206742. This engine is engineered for demanding environments, and the expansion plug plays a critical role in maintaining the engine’s cooling system.

QSK50 Series

The QSK50 CM2150 K107, QSK50 CM2150 MCRS, QSK50 CM2350 K108, and other QSK50 variants are all designed to work with the Expansion Plug 206742. These engines are widely used in various industries, and the expansion plug ensures that the cooling system is properly sealed, preventing leaks and maintaining efficiency.

QSK60 Series

The QSK60 CM500 and QSK60G engines are part of the QSK60 series, which also utilizes the Expansion Plug 206742. These engines are known for their high power output and reliability, and the expansion plug is essential for maintaining the integrity of the cooling system.

QSK78 Series

The QSK78 CM500 engine is another variant that is compatible with the Expansion Plug 206742. This engine is designed for heavy-duty applications, and the expansion plug ensures that the cooling system can withstand the rigors of such environments.

Role of Part 206742 Expansion Plug in Engine Systems

The part 206742 Expansion Plug is integral to the functionality and efficiency of various engine components. Its role is to ensure proper sealing and pressure management within the engine system.

Integration with Cylinder Block Components

In the Cylinder Block Assembly and Cylinder Block Kit, the Expansion Plug is used to seal off unused coolant passages. This ensures that coolant flows only through the necessary channels, optimizing thermal management and preventing leaks.

Function in Short Block Assemblies

Within the Short Block Assembly variants such as the Short Block Assy -K38 and Short Block Assy -K50, the Expansion Plug plays a key role in maintaining the integrity of the coolant system. It prevents coolant from escaping through non-operational passages, which is essential for consistent engine performance.

Role in Water Pump and Support Systems

The Expansion Plug is also vital in the Water Pump and Water Pump Support systems. It ensures that the water pump operates efficiently by maintaining proper pressure and flow within the coolant system. This is particularly important in the Water Pump Assembly where precise coolant management is required to avoid overheating and ensure optimal engine cooling.

Application in Base Parts and Gasket Sets

In the Base Part and Low Block Gasket Set, the Expansion Plug helps in creating a sealed environment. This is crucial for the Base Parts Assembly where any coolant leakage can lead to inefficient engine operation and potential damage.

Use in Hardware and Parts Lists

In the Hardware Kit and Kit C L. Parts List, the Expansion Plug is often included to ensure that all necessary components for a sealed coolant system are available. This is important for both initial assembly and maintenance procedures.

Supporting the EBM-Block and EBM-Drive

For the EBM-Block and EBM-Drive, the Expansion Plug ensures that the engine block maintains proper coolant pressure. This is essential for the efficient operation of these components, which rely on consistent coolant flow for performance and durability.

Conclusion

In the overall Arrangement and Cylinder Block Plumbing, the Expansion Plug contributes to a well-sealed and efficiently managed coolant system. This is fundamental for the longevity and performance of the engine, ensuring that all components operate within their designed parameters.