3103086
Captive Washer Cap Screw
Cummins®

The 3103086 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for heavy-duty truck applications. This part plays a role in securing various components within the truck’s assembly, ensuring stability and reliability under demanding conditions. Cummins, a well-established name in the industry, produces this component with a focus on durability and performance.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer. This washer provides a sealing surface, which helps prevent leakage and ensures a tight seal when the screw is tightened. The 3103086 model incorporates these features, making it suitable for applications where both sealing and secure fastening are required.

Purpose and Function

The 3103086 Captive Washer Cap Screw is designed to play a role in the assembly and maintenance of truck components by providing a reliable fastening solution. It is used in areas where a leak-proof seal is necessary, such as in fluid systems or around sensitive components. By integrating the washer directly into the screw, it simplifies the installation process and enhances the seal’s integrity.

Key Features

The 3103086 Captive Washer Cap Screw features a design that includes high-quality material composition, typically involving steel alloys that offer strength and corrosion resistance. Its design characteristics include a hexagonal head for easy tightening with standard tools and a threaded shaft that ensures a secure fit. The integrated washer is a notable feature, providing an additional sealing surface that enhances the screw’s performance in preventing leaks.

Benefits

Using the 3103086 Captive Washer Cap Screw offers several benefits. The integrated washer enhances the seal, reducing the risk of leaks in critical applications. The design of the screw allows for ease of installation, as it eliminates the need for separate washers. Additionally, the material and construction of the screw contribute to its durability, making it suitable for the rigors of heavy-duty truck use.

Troubleshooting and Maintenance

To ensure the longevity and optimal performance of the 3103086 Captive Washer Cap Screw, regular maintenance is recommended. This includes checking for signs of wear or corrosion and ensuring that the screw is properly tightened. In cases where leakage is observed, inspecting the washer for damage or deformation can help identify the issue. Replacing the screw if necessary can prevent further complications.

Manufacturer Information

Cummins is a reputable manufacturer with a history of producing high-quality truck components. The company is known for its commitment to innovation and quality in the industry. Cummins’ reputation is built on its ability to deliver reliable and durable products that meet the demanding requirements of heavy-duty applications. The 3103086 Captive Washer Cap Screw is a testament to Cummins’ dedication to quality and performance in manufacturing.

Captive Washer Cap Screw (Part 3103086) in Cummins Engines

The Captive Washer Cap Screw, identified by part number 3103086, is a critical component in several Cummins engine models. This part is integral to the assembly and functionality of the engines, ensuring secure fastening and stability.

ISM CM570/870 and ISM CM876

In the ISM CM570/870 and ISM CM876 engines, the 3103086 Captive Washer Cap Screw is utilized in various applications where secure fastening is paramount. These engines, known for their robust performance, rely on this screw to maintain the integrity of engine components, ensuring that parts remain firmly in place under operational stresses.

ISM11 CM876 SN and QSM11 CM876

For the ISM11 CM876 SN and QSM11 CM876 engines, the 3103086 Captive Washer Cap Screw is similarly essential. These engines, part of the ISM11 series, are designed for heavy-duty applications, and the screw’s role in securing various engine parts is crucial for maintaining operational efficiency and safety. The screw’s design ensures that it can withstand the high torque and stress typical in these demanding environments.

The use of the 3103086 Captive Washer Cap Screw across these engine models underscores its importance in Cummins’ engine design. Its consistent application highlights the importance of reliable fastening solutions in ensuring the longevity and performance of these engines.

Role of Part 3103086 Captive Washer Cap Screw in Engine Systems

Exhaust Manifold Mounting

The 3103086 Captive Washer Cap Screw is instrumental in securing the exhaust manifold to the engine block. This fastening method ensures a robust connection, which is essential for withstanding the high temperatures and pressures generated during engine operation. The captive washer within the screw design prevents the washer from being lost during installation or maintenance, enhancing the efficiency and reliability of the mounting process. This secure attachment is vital for maintaining the integrity of the exhaust system, ensuring that exhaust gases are effectively channeled away from the engine, contributing to overall engine performance and emissions control.

Turbocharger Arrangement

In turbocharger setups, the 3103086 Captive Washer Cap Screw plays a significant role in attaching the turbocharger to the engine and exhaust system components. The screw’s design, featuring a captive washer, simplifies the installation process by reducing the likelihood of washer displacement. This is particularly beneficial in high-performance engines where the turbocharger operates under extreme conditions. The secure fastening provided by the 3103086 screw ensures that the turbocharger remains firmly in place, allowing for efficient air compression and improved engine performance. Additionally, the reliability of the fastening method contributes to the longevity and stability of the turbocharger arrangement, which is essential for maintaining optimal engine output and responsiveness.

Conclusion

The 3103086 Captive Washer Cap Screw is a vital component in the assembly and maintenance of heavy-duty truck engines, particularly those manufactured by Cummins. Its design, featuring an integrated washer, enhances sealing and simplifies installation, making it an essential part for applications requiring both secure fastening and leak prevention. The screw’s robust construction and material composition ensure durability and reliability under demanding operational conditions. Regular maintenance and proper installation are key to maximizing the performance and longevity of this Cummins part in engine systems.