3081873
Captive Washer Cap Screw
Cummins®

The 3081873 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that enhance the performance and reliability of heavy-duty vehicles. This Cummins part is integral to securing various components and assemblies within these trucks, ensuring they remain firmly in place under operational conditions.

Basic Concepts of Captive Washer Cap Screws

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer. This design ensures that the washer remains attached to the screw, reducing the likelihood of it being misplaced during installation ¹. The screw typically consists of a threaded shaft, a head for applying torque, and the captive washer, which distributes the load and prevents damage to the fastened material. In fastening applications, this type of screw provides a secure and efficient means of joining components.

Purpose and Role in Truck Operation

This part plays a specific role in commercial truck operations by securing critical components and assemblies. Its design ensures that parts remain firmly attached, which is vital for the safe and efficient operation of the vehicle. This screw is often used in applications where vibration and movement could loosen traditional fasteners, thereby compromising the integrity of the assembly ².

Key Features

The 3081873 Captive Washer Cap Screw boasts several key features that enhance its performance. Its design includes a robust threaded shaft made from high-strength material, ensuring durability under heavy loads. The integrated washer is crafted to provide even load distribution, minimizing the risk of damage to the fastened material. Additionally, the screw’s head is designed for easy torque application, facilitating a straightforward installation process.

Benefits

This part offers several benefits that make it a preferred choice for commercial truck applications. Its integrated washer design ensures that the washer remains in place, simplifying the installation process and reducing the risk of loss. The screw’s resistance to vibration helps maintain a secure fastening, even in dynamic environments. Furthermore, the ease of installation contributes to efficient maintenance and repair procedures.

Installation Process

Proper installation of the 3081873 Captive Washer Cap Screw involves several steps to ensure a secure and lasting fastening. Begin by aligning the screw with the designated hole in the component. Using an appropriate tool, apply torque to the screw head until the desired tension is achieved. It is important to avoid over-tightening, which could damage the screw or the fastened material. Following the manufacturer’s torque specifications ensures optimal performance and longevity ³.

Troubleshooting Common Issues

Common issues with the 3081873 Captive Washer Cap Screw may include loosening due to vibration or corrosion. To address these problems, first, ensure that the screw is properly torqued during installation. If loosening occurs, re-tighten the screw to the specified torque. In cases of corrosion, inspect the screw and surrounding components for signs of damage. Cleaning and applying a corrosion-resistant coating can help prevent future issues.

Maintenance Tips

To ensure the optimal performance and longevity of the 3081873 Captive Washer Cap Screw, periodic inspections are recommended. Check for signs of wear, corrosion, or loosening, and address any issues promptly. Additionally, following the manufacturer’s guidelines for torque specifications during installation and maintenance will help maintain the screw’s integrity. Regular maintenance contributes to the overall reliability of the truck’s components and assemblies.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for innovation, quality, and reliability in the commercial truck industry. The company’s product offerings include a wide range of components and systems designed to enhance the performance and efficiency of heavy-duty vehicles.

Cummins Part 3081873 Captive Washer Cap Screw in Engine Applications

The Cummins part 3081873 Captive Washer Cap Screw is a critical component in various engine configurations. This part is designed to secure and stabilize different parts within the engine assembly, ensuring the integrity and performance of the engine.

QSK19 Series Engines

The QSK19 series engines, including the QSK19 CM2350 K105, QSK19 CM2350 K114, and QSK19 CM850 MCRS, utilize the 3081873 Captive Washer Cap Screw in several key areas. This part is integral in securing components that require precise alignment and stability, such as engine mounts, brackets, and various internal fixtures. The use of this cap screw in these engines ensures that the engine components remain firmly in place under operational stresses.

QSK38 Series Engines

In the QSK38 series engines, specifically the QSK38 CM2150 MCRS and QSK38 CM850 MCRS, the 3081873 Captive Washer Cap Screw plays a similar role. These engines benefit from the cap screw’s ability to maintain the structural integrity of the engine by securing various parts. The precision and reliability of this component are crucial for the overall performance and longevity of the QSK38 engines.

QSK50 Series Engines

The QSK50 series engines, including the QSK50 CM2150 MCRS and QSK50 CM2350 K108, also incorporate the 3081873 Captive Washer Cap Screw. This part is essential in these engines for securing components that are subjected to high operational loads and stresses. The cap screw’s design ensures that these parts remain securely fastened, contributing to the overall efficiency and durability of the engine.

KTA19GC CM558 Engine

The KTA19GC CM558 engine utilizes the 3081873 Captive Washer Cap Screw in its assembly. This part is crucial for securing various engine components, ensuring that they remain in precise alignment and are firmly attached. The cap screw’s design and material properties make it an ideal choice for maintaining the structural integrity of this engine.

V903 Engine

The V903 engine also incorporates the 3081873 Captive Washer Cap Screw. This part is essential for securing various components within the engine, ensuring that they remain firmly in place and aligned. The cap screw’s reliability and precision are key factors in the overall performance and durability of the V903 engine.

The 3081873 Captive Washer Cap Screw’s role in these engines is vital for maintaining the structural integrity and performance of the engine components. Its design and material properties ensure that it can withstand the operational stresses and maintain the precise alignment required for optimal engine function.

Role of Part 3081873 Captive Washer Cap Screw in Engine Systems

The Part 3081873 Captive Washer Cap Screw is integral to the assembly and secure functioning of various engine components. It is employed in fastening accessories to the engine, ensuring that wiring connections remain stable and secure. In breather systems, this screw helps in maintaining the integrity of the crankcase by securing the cover, which is essential for proper ventilation and pressure regulation within the engine.

When it comes to valve and filter assemblies, the Captive Washer Cap Screw plays a significant role in securing these components, ensuring they operate within specified parameters. In fuel filter systems, it is used to maintain the structural integrity of the housing, which is vital for the filtration process and the overall fuel delivery system.

For the thermostat and oil cooler support, the screw is utilized in the rear mounting process, providing a stable attachment point that ensures these components can effectively regulate temperature and cool the engine oil. In the primer system, it secures components that are essential for initial engine startup, ensuring that fuel is properly primed before ignition.

Furthermore, within the engine lubricating system, the screw is employed to fasten various parts of the system, ensuring that lubricating oil is efficiently circulated throughout the engine. This is particularly important for reducing friction and wear on moving parts.

Lastly, in the ignition system, the Captive Washer Cap Screw is used to secure components that are critical for the spark generation process, ensuring reliable and consistent ignition of the fuel-air mixture within the engine cylinders.

Conclusion

The 3081873 Captive Washer Cap Screw is a vital component in the maintenance and operation of commercial trucks and their engines. Its design, featuring an integrated washer and robust construction, ensures secure fastening and resistance to vibration, contributing to the overall reliability and performance of the vehicle. Proper installation, regular maintenance, and addressing common issues promptly are essential for maximizing the lifespan and effectiveness of this part.