3102873
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw 3102873, manufactured by Cummins, is a specialized fastening component designed for use in commercial trucks. Cummins is known for its commitment to quality and innovation in manufacturing truck components. This part is integral to the assembly and maintenance of various truck components, ensuring secure and reliable fastening solutions.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer, which is held in place by a protrusion or step on the screw’s shank. This design ensures that the washer remains in position during installation, eliminating the need for separate washer handling and reducing the risk of washer loss ¹. The 3102873 Captive Washer Cap Screw consists of a threaded shank, a head for driving, and an integrated washer that provides a sealing surface and distributes the load more evenly across the fastened materials.

Purpose and Role in Truck Operation

The 3102873 Captive Washer Cap Screw plays a significant role in the operation and maintenance of commercial trucks by providing secure fastening in various components and systems. It is commonly used in applications where vibration resistance and sealing are required, such as in engine mounts, exhaust systems, and body panels. The screw’s design helps maintain the integrity of these assemblies, ensuring that components remain securely fastened under the dynamic conditions experienced by commercial trucks ².

Key Features

The 3102873 Captive Washer Cap Screw boasts several key features that enhance its performance and reliability. Its design includes an integrated washer that provides a sealing surface and helps distribute the load, reducing the risk of damage to the fastened materials. The screw is made from high-quality materials, ensuring durability and resistance to corrosion. Additionally, the screw’s threading and head design facilitate easy installation and removal, contributing to efficient maintenance procedures ³.

Benefits

Using the 3102873 Captive Washer Cap Screw in truck maintenance and assembly offers several benefits. The integrated washer design improves sealing, reducing the risk of leaks and enhancing the overall integrity of the fastened components. The screw’s ease of installation reduces assembly time, contributing to more efficient maintenance procedures. Furthermore, the high-quality materials and design of the screw ensure enhanced durability, providing long-lasting performance in the demanding environments of commercial truck operation.

Installation Process

Proper installation of the 3102873 Captive Washer Cap Screw involves several steps to ensure secure and reliable fastening. Begin by selecting the appropriate screw size and type for the application. Clean the fastening area to remove any debris or contaminants that could affect the screw’s performance. Align the screw with the designated hole and use a suitable tool to drive the screw into place, ensuring that it is tightened to the manufacturer’s specified torque settings. Avoid over-tightening, as this can damage the screw or the fastened materials.

Troubleshooting and Maintenance

Common issues with the 3102873 Captive Washer Cap Screw may include loosening due to vibration or corrosion over time. To address loosening, ensure that the screw is properly torqued during installation and consider using a thread-locking compound to enhance its resistance to vibration. In cases of corrosion, inspect the screw and surrounding components for signs of damage and replace the screw if necessary. Regular maintenance checks can help identify and address issues before they lead to more significant problems.

Compatibility and Applications

The 3102873 Captive Washer Cap Screw is designed for use in various applications within commercial trucks. It is commonly found in engine mounts, exhaust systems, and body panels, where secure fastening and sealing are required. The screw’s compatibility with these applications ensures that it can be relied upon to provide reliable performance in the demanding environments of commercial truck operation.

Manufacturer - Cummins

Cummins is a renowned manufacturer in the automotive industry, with a history of innovation and commitment to quality. The company’s reputation for producing reliable and high-performance truck components is built on its dedication to research and development, as well as its focus on customer satisfaction. Cummins’ manufacturing processes are designed to ensure that each component, including the 3102873 Captive Washer Cap Screw, meets the highest standards of quality and performance.

Captive Washer Cap Screw 3102873 in Cummins Engines

The Captive Washer Cap Screw part number 3102873 is a critical component in various Cummins engines, ensuring secure fastening and stability. This part is integral to the assembly and maintenance of several engine models, providing a reliable connection between different parts.

ISM Series Engines

In the ISM series, the Captive Washer Cap Screw 3102873 is utilized in the ISM CM570/870 and ISM CM876 engines. These engines are known for their robust performance and efficiency, and the cap screw plays a vital role in maintaining the integrity of the engine’s structure by securing various components together.

ISM11 Series Engines

For the ISM11 CM876 SN engine, the cap screw is essential in maintaining the alignment and stability of the engine’s internal parts. This engine variant benefits from the precision and reliability of the 3102873 part, ensuring that all components are held firmly in place under operational stresses.

ISX Series Engines

The ISX CM871 engine incorporates the Captive Washer Cap Screw 3102873 to secure critical engine components. This ensures that the engine operates smoothly and efficiently, with all parts remaining tightly fastened during high-stress operations.

ISX15 Series Engines

In the ISX15 CM2250 and ISX15 CM2350 X101 engines, the cap screw is used to maintain the structural integrity of the engine. These engines are designed for heavy-duty applications, and the 3102873 part ensures that all components are securely fastened, contributing to the engine’s overall durability and performance.

QSM11 Series Engines

The QSM11 CM876 engine also relies on the Captive Washer Cap Screw 3102873 to secure various parts. This ensures that the engine maintains its structural integrity and operates efficiently under various conditions.

QSX15 Series Engines

In the QSX15 CM2250, QSX15 CM2250 ECF, and QSX15 CM2350 X105 engines, the cap screw is used to maintain the alignment and stability of the engine’s components. These engines are designed for demanding applications, and the 3102873 part ensures that all parts remain securely fastened, contributing to the engine’s reliability and performance.

X15 Series Engines

The X15 CM2350 X116B engine utilizes the Captive Washer Cap Screw 3102873 to secure various components, ensuring that the engine operates smoothly and efficiently. This part is crucial for maintaining the structural integrity of the engine under high-stress conditions.

Role of Part 3102873 Captive Washer Cap Screw in Engine Systems

The 3102873 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. In the arrangement of the crankcase breather system, this screw ensures that the breather components are tightly fastened, preventing oil vapors and contaminants from escaping, which maintains the integrity of the crankcase ventilation.

Within the crankcase itself, the screw plays a part in securing modules and other attachments, ensuring that all components remain in place under the dynamic conditions of engine operation. This is particularly important for the engine control module (ECM), where secure fastening is essential for reliable performance and data accuracy.

In the plumbing of the oil cooler water recirculation system, the 3102873 screw is used to fasten fittings and connections. This ensures that the oil cooling process is efficient and that there are no leaks in the system, which could lead to reduced engine performance or damage.

Additionally, in the exhaust system, the screw is employed to secure various components, ensuring that the exhaust gases are properly directed and that the system operates within designed parameters. This contributes to the overall efficiency and emissions performance of the engine.

Conclusion

The 3102873 Captive Washer Cap Screw is a vital component in the assembly and maintenance of commercial trucks and Cummins engines. Its design, featuring an integrated washer, ensures secure fastening and sealing in various applications. The screw’s high-quality materials and precise engineering contribute to its durability and reliability in demanding environments. Proper installation and maintenance of this part are essential for ensuring the efficient and safe operation of commercial trucks and engines.