4070054
Captive Washer Cap Screw
Cummins®

The 4070054 Captive Washer Cap Screw by Cummins is a specialized fastener designed for use in heavy-duty truck maintenance and operation. This component is integral to ensuring the secure attachment of various parts within the truck’s mechanical systems, contributing to the overall reliability and performance of the vehicle.

Basic Concepts of Captive Washer Cap Screws

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer, which is held in place by a collar or step on the screw’s shaft. This design ensures that the washer remains in position during installation, reducing the risk of loss and simplifying the fastening process. These screws are commonly used in mechanical assemblies where vibration and movement are prevalent, as they help maintain a consistent and secure connection between components ¹.

Purpose of the 4070054 Captive Washer Cap Screw

The 4070054 Captive Washer Cap Screw plays a specific role in the operation of a truck by securing components and contributing to the structural integrity of the assembly. It is designed to withstand the rigors of heavy-duty applications, providing a reliable fastening solution that helps prevent loosening due to vibration or movement ².

Key Features

The 4070054 Captive Washer Cap Screw boasts several key features that enhance its performance. Its design includes an integrated washer that is held securely in place by a collar, ensuring that the washer does not become dislodged during installation or operation. The screw is typically made from high-strength materials, such as alloy steel, to provide durability and resistance to wear. Additionally, the screw may feature a corrosion-resistant coating to protect against environmental factors, extending its service life in demanding applications ³.

Benefits

Using the 4070054 Captive Washer Cap Screw offers several advantages. The integrated washer design simplifies the installation process, reducing the likelihood of washer loss and ensuring a consistent fastening torque. This screw also contributes to improved reliability by maintaining a secure connection between components, even in applications subject to vibration and movement. Furthermore, the high-strength material and corrosion-resistant coating enhance the screw’s durability, making it a suitable choice for heavy-duty truck applications ⁴.

Installation Process

Proper installation of the 4070054 Captive Washer Cap Screw involves several steps to ensure a secure and reliable connection. Begin by selecting the appropriate screw size and thread pitch for the application. Clean the mating surfaces to remove any debris or contaminants that could affect the screw’s performance. Insert the screw into the pre-drilled hole, ensuring that the integrated washer is properly aligned. Use a torque wrench to tighten the screw to the manufacturer’s specified torque value, taking care not to over-tighten, which could damage the screw or the surrounding components. Finally, inspect the installation to confirm that the screw is secure and the washer is properly seated ⁵.

Troubleshooting and Maintenance

To identify and resolve common issues related to the 4070054 Captive Washer Cap Screw, regularly inspect the screw for signs of wear, corrosion, or damage. If the screw appears loose or shows signs of corrosion, it may need to be replaced to maintain the integrity of the assembly. To ensure longevity and optimal performance, follow proper installation procedures and use the correct torque values. Additionally, protect the screw from environmental factors by applying a corrosion-resistant coating if necessary ⁶.

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 innovation, quality, and reliability in the automotive and heavy-duty truck industry. The company offers a comprehensive range of products and services designed to meet the diverse needs of its customers, from engines and powertrain components to aftermarket parts and support ⁷.

Cummins Captive Washer Cap Screw 4070054 in Engine Applications

The Cummins Captive Washer Cap Screw part number 4070054 is a critical component in the assembly and maintenance of several Cummins engine models. This part is integral in ensuring secure fastening of various engine components, contributing to the overall integrity and performance of the engines.

Cummins 6B5.9 and 6C8.3 Engines

In the Cummins 6B5.9 and 6C8.3 engines, the 4070054 screw is utilized in several key areas, including the attachment of engine covers and the securing of internal components. Its design ensures that these parts remain firmly in place, which is crucial for maintaining engine efficiency and safety.

ISB Engines

The ISB engines, including the ISB CM850, benefit from the 4070054 screw in various applications. This part is used in the fastening of the cylinder head, valve cover, and other critical engine components. The precision and reliability of this screw are essential for the high-performance demands of these engines.

ISC Engines

For the ISC engines, specifically the ISC CM2150 and ISC8.3 CM2250, the 4070054 screw plays a vital role in securing the engine block and other structural components. Its use in these engines ensures that the engine maintains its structural integrity under various operating conditions.

ISL Engines

In the ISL engines, including the ISL CM2150 and ISL9 CM2250, the 4070054 screw is employed in the fastening of the engine’s intake manifold and other critical assemblies. This ensures that these components are securely attached, contributing to the engine’s overall performance and longevity.

QSC and QSL Engines

The QSC9 CM2250/QSL9 CM2250 and QSL9 CM2250 engines also utilize the 4070054 screw in various applications. This part is used in the fastening of the engine’s exhaust system and other critical components, ensuring that these parts remain securely attached and functioning correctly.

Overall, the Cummins Captive Washer Cap Screw 4070054 is a fundamental component in the assembly and maintenance of these Cummins engine models, ensuring that all parts are securely fastened and the engines operate efficiently and reliably.

Role of Part 4070054 Captive Washer Cap Screw in Engine Systems

The 4070054 Captive Washer Cap Screw is integral to the secure assembly and operation of various components within engine systems, particularly in the XPI JV System Cummins MR. This screw ensures the reliable connection and sealing of critical fuel system components.

In the fuel manifold assembly, the 4070054 screw is used to fasten the manifold to the engine block, ensuring a secure and leak-free connection. This is vital for maintaining consistent fuel pressure and distribution to the injectors.

For the fuel supply tube and fuel transfer tube, the screw plays a role in attaching these tubes to the fuel manifold and other components, ensuring that fuel is delivered efficiently and without leaks.

In the injector fuel supply tube and injector plumbing, the 4070054 screw secures the connections between the injectors and the fuel supply lines. This ensures that each injector receives the precise amount of fuel needed for optimal combustion.

The screw is also utilized in the fuel drain tube system to ensure that any excess fuel or contaminants are properly directed away from the engine components, maintaining system cleanliness and efficiency.

In the context of on-board spares and kits, the 4070054 screw is often included to facilitate the replacement or repair of fuel system components, ensuring that maintenance can be performed quickly and effectively.

Overall, the 4070054 Captive Washer Cap Screw is a key component in the secure and efficient operation of fuel plumbing and injector systems within the XPI JV System Cummins MR, contributing to the engine’s performance and reliability.

Conclusion

The 4070054 Captive Washer Cap Screw by Cummins is a critical component in the maintenance and operation of heavy-duty trucks and Cummins engines. Its design, featuring an integrated washer and high-strength materials, ensures secure fastening and reliable performance in demanding applications. Proper installation and maintenance of this screw are essential for maintaining the integrity and efficiency of the engine systems it supports.