3008069
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw, identified by Part #3008069 and manufactured by Cummins, is a critical component in the maintenance and assembly of commercial trucks. This screw ensures the secure attachment of various components within the truck’s structure, contributing to the overall reliability and safety of the vehicle. Cummins, a renowned manufacturer in the automotive industry, produces this part with a focus on durability and performance, reflecting their commitment to quality and innovation ¹.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer, held in place by a slot or notch in the screw’s shank. This design allows for efficient installation, as the washer remains captive and does not need to be separately aligned during assembly. The primary function of this screw is to provide a secure connection between components, distributing load and preventing loosening due to vibration or movement. Its application is widespread in mechanical assemblies, particularly in environments where components are subject to dynamic forces ².

Role in Truck Operation

In the context of commercial truck operation, the 3008069 Captive Washer Cap Screw plays a significant role in securing components and maintaining structural integrity. It is commonly used in areas where vibration and movement are prevalent, such as in the engine compartment or chassis. By providing a reliable fastening solution, this screw helps ensure that critical components remain securely attached, contributing to the safe and efficient operation of the truck ³.

Key Features

The 3008069 Captive Washer Cap Screw is characterized by several key features that enhance its performance and durability. Its design incorporates a captive washer, which simplifies the installation process and reduces the risk of washer loss. The screw is made from high-quality materials, ensuring resistance to corrosion and wear. Additionally, its threading and head design are optimized for torque application, facilitating secure and consistent fastening ⁴.

Benefits

Utilizing the 3008069 Captive Washer Cap Screw offers several advantages. The integrated washer design streamlines the installation process, saving time and reducing the potential for errors. Its robust construction contributes to improved reliability, minimizing the need for frequent replacements. Furthermore, the ease of installation and maintenance efficiency it provides can lead to cost savings over the lifespan of the vehicle ¹.

Troubleshooting and Maintenance

Common issues with Captive Washer Cap Screws may include loosening due to vibration or corrosion. Regular inspection and maintenance are recommended to ensure their continued effectiveness. If loosening is detected, re-tightening the screw or replacing it may be necessary. Additionally, applying a thread locker can help prevent loosening in high-vibration environments. Proper torque application during installation is crucial to avoid over-tightening, which can lead to damage, or under-tightening, which may result in insufficient fastening ².

About Cummins

Cummins is a global leader in the design, manufacture, and distribution of engines and related technologies. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the automotive and heavy-duty truck industries. Their commitment to excellence is evident in the design and production of components like the 3008069 Captive Washer Cap Screw, which embodies their dedication to enhancing the performance and durability of commercial vehicles ³.

Compatibility with Cummins Engines

The Captive Washer Cap Screw, part number 3008069, manufactured by Cummins, is a versatile component designed to fit a variety of Cummins engines. This part is integral in securing various engine components, ensuring stability and reliability during operation.

G855 Series

The G855 engine series, which includes variants such as G855 CM558 and GTA855 CM558 (CM2358), benefits from the use of the 3008069 cap screw. This part is particularly useful in securing the engine’s internal and external components, ensuring that the engine operates smoothly and efficiently.

N14 Series

The N14 engine series, which includes models like N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL, also utilizes the 3008069 cap screw. This part is essential in maintaining the structural integrity of the engine, providing a reliable fastening solution for various components within the engine assembly.

NH/NT 855 Series

The NH/NT 855 engine series incorporates the 3008069 cap screw to secure multiple parts within the engine. This ensures that the engine maintains its operational efficiency and durability over time.

QSN14 Series

The QSN14 engine series, which includes models such as QSN14 CM876 N103 and QSNT14 CM876 N102, also relies on the 3008069 cap screw. This part is crucial in maintaining the alignment and stability of the engine components, contributing to the overall performance of the engine.

V903 and VTA903 Series

The V903 and VTA903 CM2250 V105 engines utilize the 3008069 cap screw to secure various parts within the engine. This ensures that the engine operates with precision and reliability, providing the necessary fastening for critical components.

By integrating the 3008069 cap screw into these diverse engine models, Cummins ensures that each engine maintains its structural integrity and operational efficiency. This part is a testament to Cummins’ commitment to quality and reliability in engine manufacturing ⁴.

Role of Part 3008069 Captive Washer Cap Screw in Engine Systems

The 3008069 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. Its application spans across multiple systems, ensuring stability and reliability.

Assembly Kit

In assembly kits, the 3008069 Captive Washer Cap Screw is used to fasten components together, providing a robust connection that withstands the dynamic forces within the engine.

Corrosion Resistor Mounting

For corrosion resistor mountings, this screw ensures that the resistor is firmly attached to the engine block, maintaining electrical integrity and preventing corrosion-related failures.

Dipstick and Related Components

The screw is employed in the mounting of dipstick and tube assemblies, securing the dipstick in place for accurate oil level readings. It also ensures the dipstick tube is correctly positioned within the oil pan.

Exhaust Manifold and Collector

In the exhaust system, the 3008069 Captive Washer Cap Screw is used to mount the exhaust manifold and collector, ensuring a tight seal that prevents exhaust leaks and maintains efficient engine performance.

Fan Drive

For fan drive systems, this screw helps in securing the fan to the engine, ensuring proper cooling by maintaining the fan’s alignment and operational stability.

Fuel Filter and Plumbing

In fuel filter assemblies, the screw is used to mount the fuel filter securely, ensuring there are no leaks in the fuel system and maintaining consistent fuel flow to the engine.

Oil Gauge and Related Components

The screw is vital in mounting oil gauges, bayonets, and tubes. It ensures these components are correctly installed, providing accurate readings of oil pressure and level.

N14 Bracket Kit

Within the N14 bracket kit, the 3008069 Captive Washer Cap Screw secures various brackets, ensuring they remain in place under the engine’s operational stresses.

Oil Pan and Mounting

For oil pan assemblies, this screw is used in the mounting process, ensuring the oil pan is securely attached to the engine block, preventing oil leaks and maintaining engine lubrication.

Turbocharger Arrangement

In turbocharger setups, the screw is used to mount turbocharger components, ensuring they are securely fastened and operate efficiently within the engine system.

Conclusion

The 3008069 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, simplifies installation and enhances reliability. The screw’s robust construction and optimized design contribute to the secure fastening of various engine components, ensuring the structural integrity and operational efficiency of the engine. Regular maintenance and proper installation practices are essential to maximize the benefits of this Cummins part, reflecting Cummins’ commitment to quality and innovation in the automotive industry ¹²³⁴.