4017240
Expansion Plug
Cummins®

The Cummins 4017240 Expansion Plug is a component designed for use in commercial trucks. It serves a specific function within the engine system, contributing to the maintenance and operational efficiency of heavy-duty vehicles. Understanding its role and significance is important for fleet operators and maintenance personnel to ensure optimal vehicle performance and longevity.

Basic Concepts of Expansion Plugs

An expansion plug is a mechanical device that utilizes the principle of thermal expansion to seal gaps or openings in various systems. When subjected to heat, the material of the plug expands, creating a tight seal that prevents leaks or the escape of fluids or gases. This principle is fundamental in the design of expansion plugs, allowing them to adapt to changing temperatures and pressures within mechanical systems ¹.

Purpose of the 4017240 Expansion Plug

This part plays a role in the engine system by sealing specific points where leaks might occur due to thermal expansion or contraction. Its function is to maintain the integrity of the engine’s cooling system or other fluid systems by preventing the escape of fluids under varying operational conditions. This contributes to the overall functionality and efficiency of the vehicle by ensuring that systems operate within their designed parameters ².

Key Features

The 4017240 Expansion Plug is characterized by its material composition, typically made from heat-resistant materials to withstand the high temperatures encountered in engine compartments. Its design includes features that allow for precise expansion and contraction, ensuring a reliable seal. Unique characteristics may include a specific shape or threading that enhances its fitting and sealing capabilities, distinguishing it from other expansion plugs.

Benefits

Using the 4017240 Expansion Plug offers several advantages. Its durable construction contributes to the longevity of the component, reducing the frequency of replacements. Enhanced performance is achieved through its reliable sealing capabilities, which help maintain system pressures and temperatures. For fleet operators, this can translate into potential cost savings by minimizing maintenance needs and preventing system failures ³.

Installation Process

Proper installation of the 4017240 Expansion Plug involves several steps to ensure it functions correctly. The process includes cleaning the installation site, selecting the appropriate size of the plug, and using the necessary tools to insert it into place. Safety precautions, such as wearing protective gear and ensuring the engine is cool before beginning work, should be observed to prevent injuries and ensure the plug is installed correctly.

Troubleshooting and Maintenance

Common issues with expansion plugs may include leaks due to improper installation or wear over time. Troubleshooting steps involve inspecting the plug for signs of damage or misalignment and ensuring it is correctly seated. Maintenance tips include regular inspection of the plug and its surrounding area for any signs of wear or leakage, and replacing the plug if it shows signs of degradation to ensure continued system integrity.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. 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 a variety of engines and components designed to meet the demanding requirements of heavy-duty applications, underscoring its commitment to excellence and customer satisfaction.

Cummins Engine Compatibility with Expansion Plug Part 4017240

The Cummins Expansion Plug part number 4017240 is designed to fit a range of Cummins engines, ensuring compatibility and performance across various models. Here’s a detailed look at how this part fits with specific Cummins engines:

QSK45 CM500 and QSK60 CM500

The QSK45 CM500 and QSK60 CM500 engines are part of Cummins’ QSK series, known for their robust performance and reliability. The 4017240 Expansion Plug is engineered to seamlessly integrate with these engines, providing a secure fit that maintains the integrity of the engine’s cooling system.

QSK60 CM850 MCRS and QSK60 G CM2358 K110

The QSK60 CM850 MCRS and QSK60 G CM2358 K110 engines are equipped with advanced features, including the MCRS (Modular Cooling and Refrigeration System) and the K110 technology. The 4017240 Expansion Plug is compatible with these engines, ensuring that it fits perfectly within the cooling system architecture, maintaining optimal thermal efficiency and durability.

QSK60G

The QSK60G engine is another variant in the QSK series, designed for heavy-duty applications. The 4017240 Expansion Plug is specifically designed to fit this engine, providing a reliable seal that prevents coolant leaks and ensures the engine operates at peak performance.

QSK78 CM500 and QSK95 CM2350 K111/K113

The QSK78 CM500 and QSK95 CM2350 K111/K113 engines are high-performance models in Cummins’ lineup. The 4017240 Expansion Plug is engineered to fit these engines, ensuring a precise and secure fit that supports the engine’s cooling system requirements. This compatibility is crucial for maintaining the engine’s efficiency and longevity.

By ensuring that the 4017240 Expansion Plug fits seamlessly with these Cummins engines, it provides a reliable solution for maintaining the integrity of the engine’s cooling system, contributing to the overall performance and durability of the engine.

Role of Part 4017240 Expansion Plug in Engine Systems

This Cummins part is an essential component in various engine systems, ensuring the integrity and efficiency of the engine’s operation. Here’s how it integrates with different components:

• Auxiliary Cooling System: The expansion plug helps maintain pressure within the auxiliary cooling system, preventing coolant loss and ensuring consistent cooling performance.

• Block Kit: When installed in a block kit, the expansion plug seals any unnecessary passages within the cylinder block, contributing to the overall structural integrity and preventing fluid leaks.

• Connection Support: In systems where connection support is vital, the expansion plug ensures that fluid pathways are correctly sealed, reducing the risk of contamination or leaks.

• Crankshaft and Bearings: By sealing off specific areas around the crankshaft and bearings, the expansion plug helps maintain lubrication and prevents debris from entering sensitive areas.

• Cylinder Block: Within the cylinder block, the expansion plug ensures that coolant and oil pathways are properly sealed, which is essential for thermal management and lubrication.

• Cylinder Block Hardware Kit: When part of a hardware kit, the expansion plug aids in the assembly process by ensuring that all passages are correctly sealed from the outset.

• Cylinder Block Kit: In a comprehensive cylinder block kit, the expansion plug plays a role in ensuring that the block is ready for installation without any unsealed pathways.

• Engine Oil Cooler: The expansion plug helps maintain the pressure within the engine oil cooler, ensuring efficient heat exchange and prolonging the life of the oil.

• Flywheel Housing: Within the flywheel housing, the expansion plug seals off areas that do not require fluid passage, ensuring the housing’s structural integrity.

• Flywheel Housing Kit: As part of a kit, the expansion plug ensures that the flywheel housing is correctly sealed, ready for immediate use upon installation.

• Front Gear Housing: In the front gear housing, the expansion plug seals off areas to prevent fluid leakage, ensuring the gears operate within a clean and lubricated environment.

• Gear Housing: The expansion plug ensures that the gear housing remains sealed, protecting the gears from contamination and ensuring smooth operation.

• Gear Housing Kit: When included in a gear housing kit, the expansion plug aids in the proper sealing of the housing, facilitating easier and more reliable installation.

• Lower Block Gasket Set: The expansion plug works in conjunction with the lower block gasket set to ensure that all fluid pathways are correctly sealed, preventing leaks and maintaining engine efficiency.

• Service Block Kit: In a service block kit, the expansion plug ensures that the block is prepared for service with all necessary passages sealed, facilitating a smoother repair process.

• Service Kit: Within a service kit, the expansion plug ensures that all components are ready for installation with proper sealing, reducing the risk of post-service issues.

• Thermostat Housing: The expansion plug helps maintain the pressure within the thermostat housing, ensuring accurate temperature regulation and efficient coolant flow.

• Thermostat Top Level Assembly Housing: In the thermostat top level assembly housing, the expansion plug ensures that the housing is correctly sealed, contributing to accurate thermostat function and overall engine thermal management.

Conclusion

The 4017240 Expansion Plug is a critical component in maintaining the efficiency and reliability of Cummins engines. Its role in sealing various engine systems ensures that fluids and gases are contained within their designated pathways, preventing leaks and maintaining system pressures. Proper installation, regular maintenance, and understanding its compatibility with specific Cummins engines are essential for maximizing the benefits of this part. By integrating seamlessly with various engine components, the expansion plug contributes to the overall performance and longevity of the engine, making it a valuable asset for fleet operators and maintenance personnel.