3071158
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw, part number 3071158, manufactured by Cummins, is a specialized fastener designed for heavy-duty truck maintenance. Cummins, a prominent manufacturer in the automotive industry, produces this component to meet the stringent requirements of commercial trucking applications. This screw ensures secure and reliable fastenings in various truck components.

Basic Concepts

A Captive Washer Cap Screw is a fastener with an integrated washer held in place by a protrusion or step on the screw’s shank. This design ensures the washer remains attached during installation, reducing the risk of loss and simplifying the fastening process. In commercial trucks, these screws are used in applications requiring secure and consistent fastening, such as engine components and chassis parts ¹.

Purpose and Role in Truck Operation

The 3071158 Captive Washer Cap Screw is designed to provide secure fastening in heavy-duty truck operations. Its primary role is to ensure components remain firmly attached under various operating conditions, including vibrations, temperature fluctuations, and heavy loads. This screw is commonly used in applications where maintaining a tight and consistent connection is vital for the truck’s performance and safety ².

Key Features

The 3071158 Captive Washer Cap Screw features an integrated washer, providing a uniform distribution of clamping force and reducing the risk of damage to fastened materials. Made from high-strength materials, it can withstand the rigors of heavy-duty truck applications. Additionally, the screw features a corrosion-resistant coating, protecting it from environmental factors and extending its service life ³.

Benefits

Using the 3071158 Captive Washer Cap Screw offers several advantages. The integrated washer simplifies the installation process, reducing the likelihood of washer loss and ensuring consistent clamping force. The high-strength material and corrosion-resistant coating enhance the screw’s reliability and durability, making it suitable for demanding applications. Furthermore, the screw’s design allows for easy installation and removal, facilitating maintenance and repair procedures.

Installation Process

Proper installation of the 3071158 Captive Washer Cap Screw is crucial for ensuring secure and reliable fastening. To install the screw, ensure that the mating surfaces are clean and free of debris. Align the screw with the designated hole and use a torque wrench to tighten it to the manufacturer’s specified torque settings. Avoid over-tightening, as this can lead to stripped threads or damage to the fastened components. Regularly inspect the screw and surrounding area for signs of wear or corrosion, and replace the screw if necessary to maintain optimal performance.

Troubleshooting and Maintenance

Common issues with the 3071158 Captive Washer Cap Screw may include loosening, corrosion, or damage to the screw or washer. To address these problems, regularly inspect the screw and surrounding components for signs of wear or damage. If corrosion is present, clean the affected area and apply a corrosion-resistant coating to prevent further degradation. In cases of screw loosening, re-tighten the screw to the specified torque settings or replace it if damage is detected. Proper maintenance and timely replacement of worn or damaged screws will help ensure the continued reliability and performance of the truck.

Manufacturer - Cummins

Cummins is a renowned manufacturer in the automotive industry, with a strong reputation for producing high-quality components. The company has a long history of innovation and commitment to excellence, making it a trusted name in the commercial trucking sector. Cummins’ dedication to quality and performance is evident in the design and construction of the 3071158 Captive Washer Cap Screw, which is built to meet the demanding requirements of heavy-duty truck applications.

Captive Washer Cap Screw (Part 3071158) in Cummins Engines

The Captive Washer Cap Screw, identified by part number 3071158, is a critical component in various Cummins engine models, including the N14 CELECT PLUS and N14 MECHANICAL engines. This part plays a vital role in ensuring the structural integrity and operational efficiency of these engines.

In the N14 CELECT PLUS engine, the 3071158 screw is used in several key areas where secure fastening is essential. Its design allows for a tight and reliable connection, preventing loosening due to vibrations and thermal expansion. This is particularly important in the high-stress environment of an engine, where any movement can lead to significant performance issues or even engine failure.

Similarly, in the N14 MECHANICAL engine, the 3071158 screw is employed in various applications where it must maintain the alignment and stability of engine components. The mechanical nature of this engine model requires robust fastening solutions to withstand the rigors of continuous operation.

Both engines benefit from the use of this cap screw due to its ability to provide a secure hold without the need for additional washers or nuts. This not only simplifies the assembly process but also reduces the likelihood of parts becoming misplaced or lost during maintenance.

The consistent use of the 3071158 screw across different Cummins engine models highlights its versatility and reliability in demanding applications. Its design ensures that it can perform effectively under various operating conditions, contributing to the overall durability and performance of the engines.

Role of Part 3071158 Captive Washer Cap Screw in Engine Systems

The 3071158 Captive Washer Cap Screw is an essential fastening component in various engine systems, ensuring the secure assembly of multiple parts.

In the context of the cover, this screw plays a significant role in maintaining the integrity of the cover’s attachment to the engine block or other structural components. By providing a robust connection, it helps to prevent leaks and ensures that the cover remains in place under varying operational conditions.

For the valve assembly, the 3071158 Captive Washer Cap Screw is used to fasten valve covers, which protect the valve train components. This secure fastening is vital for maintaining the proper sealing of the valve cover, thus preventing oil leaks and contaminants from entering the engine’s internals.

In the rocker lever cover application, this screw ensures that the cover, which houses the rocker arms and other valve train components, is tightly sealed. This sealing is important for maintaining the correct pressure within the valve train system and for protecting the components from external debris.

Overall, the 3071158 Captive Washer Cap Screw contributes to the reliable operation of engine systems by providing secure and consistent fastening across various critical components.

Conclusion

The 3071158 Captive Washer Cap Screw by Cummins is a vital component in heavy-duty truck maintenance and engine systems. Its design, featuring an integrated washer and high-strength materials, ensures secure and reliable fastening under demanding conditions. The screw’s corrosion-resistant coating extends its service life, making it a durable and dependable choice for commercial trucking applications. Proper installation, regular maintenance, and timely replacement are essential to ensure the continued reliability and performance of the truck and its engine systems.