4070453
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw, specifically part number 4070453 by Cummins, is a significant component in the maintenance and operation of heavy-duty trucks. Cummins, a renowned manufacturer in the automotive and heavy-duty truck industry, produces this screw which is widely utilized in commercial trucks. This part plays a role in securing various components within the truck’s structure, ensuring both the integrity and efficiency of the vehicle.

Basic Concepts of Captive Washer Cap Screws

A Captive Washer Cap Screw is a type of fastener that incorporates a washer into its design. This integration allows for a more streamlined installation process, as the washer remains attached to the screw, reducing the likelihood of loss during assembly. The washer serves to distribute the load more evenly across the surface it contacts, which can enhance the sealing capability and reduce the risk of damage to the material being fastened. These screws are commonly used in mechanical assemblies where vibration resistance and secure fastening are required ¹.

Purpose and Role in Truck Operation

The 4070453 Captive Washer Cap Screw by Cummins is designed to fulfill specific functions within heavy-duty trucks. It contributes to the secure attachment of components, which is vital for the truck’s overall functionality and reliability. By providing a stable and vibration-resistant connection, this screw helps maintain the structural integrity of the truck’s assemblies, which is particularly important under the demanding conditions typical of commercial truck operation ².

Key Features

The 4070453 Captive Washer Cap Screw is characterized by several key features that enhance its performance and durability. It is constructed from materials that offer high tensile strength and resistance to corrosion, ensuring longevity in various operating environments. The design includes a captive washer that is integral to the screw, which simplifies the installation process and ensures consistent performance. Additionally, the screw may feature a coating or treatment that further protects against environmental factors and wear ³.

Benefits

Utilizing the 4070453 Captive Washer Cap Screw offers several advantages. The integrated washer improves the sealing at the fastening point, which can be particularly beneficial in applications where fluid or gas leakage must be minimized. The design of the screw also contributes to reduced maintenance requirements, as the captive washer eliminates the need for separate washer handling during installation. Furthermore, the screw’s robust construction enhances the structural integrity of the truck’s components, supporting reliable operation over time.

Installation Process

Proper installation of the 4070453 Captive Washer Cap Screw is important to ensure optimal performance. The process involves selecting the appropriate screw size for the application, aligning the screw with the designated fastening point, and using a torque wrench to apply the manufacturer-specified torque. This ensures that the screw is tightened to the correct tension, which is critical for both the security of the fastener and the prevention of over-tightening, which could lead to damage.

Troubleshooting and Maintenance

Common issues with Captive Washer Cap Screws may include loosening due to vibration or corrosion. To address these problems, regular inspections should be conducted to check for any signs of wear or damage. If a screw is found to be loose, it should be re-tightened to the specified torque. In cases where corrosion is present, the affected screw may need to be replaced to maintain the integrity of the fastening. Routine maintenance, such as cleaning and applying a protective coating, can help prolong the lifespan of the screws and ensure continued reliable operation.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a diverse product range, Cummins has established a reputation for quality and reliability in the automotive and heavy-duty truck industry. The company’s commitment to excellence is reflected in its manufacturing processes and the performance of its products, including the 4070453 Captive Washer Cap Screw.

Captive Washer Cap Screw 4070453 in Cummins Engines

The Captive Washer Cap Screw part number 4070453, manufactured by Cummins, is a critical component in several of their engine models. This part is designed to provide secure fastening and stability, ensuring that various engine components remain tightly secured during operation.

ISM CM570 and QSM11 CM570 Engines

In the ISM CM570 and QSM11 CM570 engines, the 4070453 Captive Washer Cap Screw is utilized in several key areas. These engines, known for their robust performance, require reliable fastening solutions to maintain the integrity of their components under high stress and varying operational conditions. The screw is often used in securing engine mounts, brackets, and other critical assemblies.

ISM11 CM876 SN and QSB6.7 CM850 (CM2850) Engines

For the ISM11 CM876 SN and QSB6.7 CM850 (CM2850) engines, the 4070453 screw plays a vital role in maintaining the structural integrity of the engine. These engines are typically found in heavy-duty applications, where the screw’s ability to provide a tight and secure fit is essential for performance and longevity. It is commonly used in securing the engine block, cylinder heads, and other heavy-duty components.

QSB7 CM2880 B117 Engine

In the QSB7 CM2880 B117 engine, the 4070453 Captive Washer Cap Screw is integral to the engine’s assembly and operation. This engine is designed for demanding applications, and the screw’s reliability in fastening various components ensures that the engine can withstand the rigors of heavy-duty use. It is frequently used in securing the engine’s internal and external components, ensuring that everything remains in place under high load and stress.

X12 CM2670 X121B Engine

The X12 CM2670 X121B engine also benefits from the use of the 4070453 Captive Washer Cap Screw. This engine, known for its versatility and performance, requires a high level of precision in its assembly. The screw is used in various applications within the engine, including securing the engine block, various brackets, and other critical assemblies. Its design ensures that all components are held firmly in place, contributing to the engine’s overall reliability and performance.

Role of Part 4070453 Captive Washer Cap Screw in Engine Systems

The Part 4070453 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. In the Accessory Drive Kit, it ensures that pulleys and brackets are firmly attached, maintaining the integrity of the drive system. This is particularly important for components like the Turbocharger, where precise alignment and secure mounting are necessary to prevent performance issues and potential damage.

Within the Belt Tensioner assembly, the Captive Washer Cap Screw plays a key role in keeping the tensioner properly aligned and functional. This ensures that the belts driving various engine accessories remain under the correct tension, which is vital for the efficient operation of systems like the Air Intake Manifold and Intake Manifold.

For the Mounting of the Air Intake Manifold and Intake Manifold, these screws provide the necessary stability and resistance to vibrations, which can otherwise lead to leaks or reduced engine performance. They are also used in the Plumbing of the Radiator system, where secure connections are essential to maintain coolant flow and prevent leaks.

Additionally, in the Tensioner mechanisms, whether for belts or other components, the Captive Washer Cap Screw ensures that the tensioning force is consistently applied, which is fundamental for the longevity and reliability of the engine’s accessory systems.

Conclusion

The 4070453 Captive Washer Cap Screw by Cummins is a critical component in the maintenance and operation of heavy-duty trucks and engines. Its design and features contribute to the secure attachment of components, ensuring the integrity and efficiency of the vehicle. Proper installation, regular maintenance, and understanding its role in various engine systems are essential for the reliable operation of Cummins engines.