4953513
Captive Washer Cap Screw
Cummins®

The 4953513 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in heavy-duty truck components. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this component to meet the rigorous demands of truck maintenance and repair. This screw plays a role in the reliability and efficiency of various truck systems.

Basic Concepts of Captive Washer Cap Screws

A captive washer cap screw is a type of fastener that includes an integrated washer, which remains attached to the screw during installation. This design eliminates the need for separate washers, reducing the risk of loss and ensuring consistent torque application. Captive washer cap screws are commonly used in mechanical assemblies where vibration resistance and secure fastening are required ¹.

Purpose of the 4953513 Captive Washer Cap Screw

The 4953513 Captive Washer Cap Screw is designed to provide secure fastening in heavy-duty truck applications. It is utilized in various truck components and systems, including engine mounts, transmission housings, and chassis assemblies. By integrating a washer, this screw ensures even distribution of clamping force, which is vital for maintaining the integrity of truck components under stress ².

Key Features

The 4953513 Captive Washer Cap Screw boasts several key features that enhance its performance and durability. It is constructed from high-strength materials, ensuring resistance to corrosion and wear. The design includes a hex head for easy installation using standard tools, and the integrated washer is made from a compatible material to prevent galvanic corrosion. Additionally, the screw features a smooth finish that reduces friction during installation.

Benefits

Using the 4953513 Captive Washer Cap Screw offers several advantages in truck maintenance and repair. Its integrated washer design simplifies the installation process, reducing the likelihood of errors and ensuring consistent torque application. The high-strength material composition enhances reliability, while the corrosion-resistant properties prolong the lifespan of the component. Furthermore, the secure fastening provided by this screw contributes to the overall performance and safety of the truck.

Installation Process

Proper installation of the 4953513 Captive Washer Cap Screw involves several steps to ensure secure and effective fastening. Begin by cleaning the installation surface to remove any debris or contaminants. Use a torque wrench to install the screw, applying the manufacturer-recommended torque specifications to avoid over-tightening. Ensure that the integrated washer remains in place during installation to maintain the intended clamping force. Finally, double-check the installation to confirm that the screw is securely fastened and properly aligned.

Troubleshooting and Maintenance

Common issues with the 4953513 Captive Washer Cap Screw may include corrosion, wear, or improper installation. Regular inspection of the screw and surrounding components can help identify these problems early. If corrosion is detected, clean the affected area and apply a compatible anti-corrosive treatment. In cases of wear or damage, replace the screw with a new one to maintain the integrity of the fastening. Adhering to proper maintenance practices will help prolong the lifespan of the component and ensure continued reliable performance.

Cummins: Manufacturer 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 strong reputation for quality and innovation in the automotive and heavy-duty truck industry. The company’s extensive product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of modern transportation. Cummins’ commitment to excellence and customer satisfaction has made it a trusted name among professionals in the field.

Captive Washer Cap Screw 4953513 in Cummins Engines

The Captive Washer Cap Screw 4953513 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.

QSK19 Series

The QSK19 series engines, including the QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, and QSK19 CM500, utilize the Captive Washer Cap Screw 4953513 in multiple applications. This screw is essential for maintaining the integrity of the engine’s structure, particularly in areas where high torque and vibration are common. Its design ensures that the washer remains captive, preventing loss during operation and providing a consistent clamping force.

QSK19 CM850 MCRS

In the QSK19 CM850 MCRS engine, the Captive Washer Cap Screw 4953513 plays a pivotal role in securing various components. This engine, known for its robust performance, relies on this screw to maintain the alignment and stability of critical parts, ensuring that the engine operates smoothly and efficiently.

QSK19G

The QSK19G engine also incorporates the Captive Washer Cap Screw 4953513 in its design. This screw is used in areas where precise fastening is required to withstand the operational stresses of the engine. Its captive washer feature adds an extra layer of security, reducing the risk of loosening over time.

Grouping of Engines

The QSK19 CM2350 series engines (K105, K114, K144G) and the QSK19 CM500 share similar design elements and operational requirements, making the Captive Washer Cap Screw 4953513 a common component across these models. This commonality allows for streamlined maintenance and repair processes, as technicians can use the same part across multiple engine variants.

The QSK19 CM850 MCRS and QSK19G engines, while distinct in their specifications, also benefit from the use of the Captive Washer Cap Screw 4953513. This screw’s versatility and reliability make it a preferred choice for securing various components in these engines, ensuring optimal performance and longevity.

Role of Part 4953513 Captive Washer Cap Screw in Engine Systems

The 4953513 Captive Washer Cap Screw is an essential component in the assembly and maintenance of various engine systems. Its primary function is to secure and maintain the integrity of connections within the engine, ensuring that components remain firmly in place under operational stress.

Cover Assembly

In the cover assembly, the 4953513 Captive Washer Cap Screw is used to fasten the cover to the engine block. This secure attachment is vital for maintaining the seal and preventing any leaks that could occur due to vibrations or thermal expansion. The screw’s captive washer design ensures that the washer remains in place, providing consistent pressure distribution and enhancing the seal’s effectiveness.

Cam Follower Attachment

For the cam follower, the 4953513 Captive Washer Cap Screw plays a significant role in attaching the follower to the engine’s camshaft or rocker arm. This connection must be robust to withstand the high cyclic loads and dynamic forces generated during engine operation. The screw’s design helps in distributing the load evenly, reducing the risk of fatigue failure and ensuring smooth operation of the valve train.

Short Block Kit Integration

In a short block kit, which includes the engine block, crankshaft, pistons, and other essential components, the 4953513 Captive Washer Cap Screw is utilized in various applications. It is commonly employed to secure ancillary components such as sensors, brackets, and mounting plates. These connections are important for the proper functioning and alignment of the engine’s internal parts, contributing to overall engine performance and durability.

Conclusion

The 4953513 Captive Washer Cap Screw is a vital component in the maintenance and repair of heavy-duty trucks and Cummins engines. Its design, featuring an integrated washer, ensures secure fastening and consistent torque application, which is crucial for the reliability and efficiency of truck systems. The high-strength materials and corrosion-resistant properties of this Cummins part contribute to its durability and longevity. Proper installation and maintenance practices are essential to maximize the benefits of this screw, ensuring the continued performance and safety of the vehicle.