3098687
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw, a critical component in heavy-duty truck maintenance, is manufactured by Cummins, a prominent figure in the automotive and heavy-duty truck industry. This article delves into the specifics of part number 3098687, offering a thorough understanding of its role and significance in truck operations.

Basic Concepts of Captive Washer Cap Screws

A Captive Washer Cap Screw is a specialized fastener featuring an integrated washer, designed to simplify installation and enhance fastening security. In the automotive sector, these screws are pivotal in applications demanding vibration resistance and secure fastening. The design typically includes a threaded shaft and a head, with the washer permanently attached to the shaft, ensuring it remains in place during installation ¹.

Purpose of the 3098687 Captive Washer Cap Screw in Truck Operations

The 3098687 Captive Washer Cap Screw is instrumental in the operation and maintenance of heavy-duty trucks. It provides a reliable fastening solution for various components, contributing to the overall functionality and reliability of truck parts by ensuring secure and vibration-resistant connections, which are essential in the demanding conditions under which heavy-duty trucks operate ².

Key Features of the 3098687 Captive Washer Cap Screw

This Cummins part is characterized by several key features that enhance its performance and durability. These include its material composition, designed to withstand the rigors of heavy-duty truck environments, and its thread type, which ensures a secure fit. Additionally, any unique design elements incorporated into this screw are aimed at improving its functionality and ease of use ³.

Benefits of Using the 3098687 Captive Washer Cap Screw

Incorporating the 3098687 Captive Washer Cap Screw in truck maintenance offers several advantages. These include improved fastening security, enhanced resistance to vibration, and ease of installation. The integrated washer design eliminates the need for separate washers, streamlining the installation process and reducing the risk of washer loss or misplacement.

Installation and Usage Guidelines

Proper installation of the 3098687 Captive Washer Cap Screw involves following specific guidelines to ensure optimal performance. This includes adhering to torque specifications provided by the manufacturer and considering any special installation requirements. Careful attention to these details helps maintain the screw’s integrity and ensures a secure fastening solution.

Troubleshooting and Maintenance Tips

Common issues associated with captive washer cap screws can often be addressed through proper troubleshooting techniques. Maintenance tips for prolonging the life of the 3098687 Captive Washer Cap Screw include regular inspection for signs of wear or damage and following replacement guidelines when necessary. These practices help ensure the continued reliability and performance of the screw in heavy-duty truck applications.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history in the automotive and heavy-duty truck industry, Cummins is committed to quality and innovation in manufacturing truck components. Their products, including the 3098687 Captive Washer Cap Screw, are designed with a focus on durability, performance, and reliability, reflecting Cummins’ dedication to excellence in the industry.

Captive Washer Cap Screw 3098687 in Cummins Engines

The Captive Washer Cap Screw part number 3098687, manufactured by Cummins, is a critical component in several of their engine models. This part is designed to secure various engine parts, ensuring stability and integrity during operation.

G855 Series

In the G855 series, the 3098687 screw is utilized in both the G855 and G855 CM558 engines. These engines are known for their robust design and high performance, often used in heavy-duty applications. The screw’s role here is to maintain the alignment and fastening of critical engine components, ensuring the engine operates smoothly and efficiently.

GTA855 Series

The GTA855 CM558 (CM2358) G101 engine also incorporates the 3098687 screw. This engine is part of the advanced GTA series, which is designed for high-performance and reliability. The screw helps in securing parts that are subjected to significant stress and vibration, contributing to the engine’s overall durability.

N14 Series

The N14 CELECT PLUS and N14 G engines both use the 3098687 screw. These engines are widely recognized for their efficiency and reliability in various industrial applications. The screw’s function in these models is to fasten and stabilize components that are crucial for the engine’s operation, ensuring that the engine maintains its structural integrity under various conditions.

QSN14 Series

In the QSN14 CM876 N103 engine, the 3098687 screw plays a vital role in securing key components. This engine is known for its durability and performance in demanding environments. The screw’s design ensures that it can withstand the stresses and vibrations inherent in such applications, providing a reliable fastening solution.

The use of the 3098687 screw across these various engine models highlights its importance in maintaining the structural integrity and performance of Cummins engines. Its design and material ensure it can handle the demanding conditions these engines operate under, contributing to their overall reliability and longevity.

Role of Part 3098687 Captive Washer Cap Screw in Engine Systems

The 3098687 Captive Washer Cap Screw is integral to the assembly and secure functioning of various engine components. In the fan drive system, this screw ensures the fan is properly attached to the engine, allowing it to operate efficiently by maintaining the correct alignment and tension. This is essential for optimal cooling performance, as the fan must be able to respond to changes in engine temperature without wobbling or detaching.

In the fuel injection system, the 3098687 screw plays a role in securing injectors to the engine block or cylinder head. This ensures that fuel is delivered precisely and consistently, which is vital for combustion efficiency and overall engine performance. Proper securing prevents leaks and ensures that the injectors can withstand the high pressures involved in fuel delivery.

Within the valve train, this screw is used to fasten components such as rocker arms, ensuring they remain in place under the dynamic forces exerted during engine operation. This stability is necessary for maintaining valve timing and ensuring that the valves open and close at the correct moments, which is fundamental for engine efficiency and longevity.

In the alternator assembly, the 3098687 screw helps secure the alternator to the engine, ensuring it can generate electricity efficiently without vibrations that could lead to electrical issues or mechanical failure. This is important for maintaining a consistent power supply to the engine’s electrical systems.

For the exhaust system, this screw is employed in securing manifold components, ensuring they remain tightly sealed to prevent exhaust leaks. This not only enhances engine performance by maintaining proper backpressure but also reduces emissions and noise.

Overall, the 3098687 Captive Washer Cap Screw is a versatile fastener that contributes to the reliable operation of multiple engine systems by ensuring components are securely and precisely positioned.

Conclusion

The 3098687 Captive Washer Cap Screw is a vital component in the maintenance and operation of heavy-duty trucks, particularly in Cummins engines. Its design and features ensure secure fastening, vibration resistance, and ease of installation, contributing to the overall reliability and performance of truck and engine systems. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.