3926780
Plain Washer
Cummins®

Introduction

The 3926780 Plain Washer is a component manufactured by Cummins, a well-established name in the commercial truck industry. This washer is significant in commercial truck applications due to its role in ensuring the integrity and efficiency of various truck components and systems.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. Their primary function is to distribute the load of a fastening, such as a bolt or screw, over a larger area. This distribution helps prevent damage to the surfaces being joined and enhances the security of the fastening. Plain washers also serve to provide a smooth surface for the fastener head, reducing the risk of surface damage and facilitating easier tightening and loosening ¹.

Purpose of the 3926780 Plain Washer

In the context of commercial trucks, the 3926780 Plain Washer plays a specific role in various components and systems. It is designed to be used in applications where load distribution and fastening security are paramount. This washer is often found in critical areas such as engine mounts, transmission components, and chassis assemblies, where it helps to ensure that fastenings remain secure under the demanding conditions encountered in commercial trucking ².

Key Features

The 3926780 Plain Washer is characterized by several key features that enhance its performance and durability. It is typically made from high-quality materials, such as steel or stainless steel, which provide excellent strength and resistance to corrosion. The dimensions of the washer are precisely engineered to meet the requirements of its intended applications, ensuring optimal load distribution and fastening security. Additionally, the washer may feature unique design elements, such as a slightly beveled edge, to improve its fit and function in specific applications.

Benefits

Using the 3926780 Plain Washer offers several benefits. It provides improved load distribution, which helps to prevent damage to the surfaces being joined and enhances the overall security of the fastening. This can lead to increased reliability and longevity of the components in which it is used. Furthermore, by ensuring secure fastenings, the washer can contribute to potential cost savings through extended component life and reduced maintenance requirements.

Installation Guidelines

Proper installation of the 3926780 Plain Washer is crucial for ensuring optimal performance and longevity. It should be placed under the head of the fastener or within the nut, depending on the specific application. Care should be taken to ensure that the washer is correctly aligned and seated to provide the intended load distribution and fastening security. Following the manufacturer’s guidelines for torque specifications and fastening procedures is also important to ensure the washer functions as designed ³.

Troubleshooting and Maintenance

Common issues with plain washers can include deformation, corrosion, or failure due to excessive load or environmental factors. Regular inspection of washers during maintenance can help identify these problems early. Maintenance tips include ensuring that washers are replaced if they show signs of wear or damage, and that they are made from materials suitable for the specific environmental conditions in which they are used. Proper storage and handling of washers can also help prevent issues related to corrosion or contamination.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s extensive product range and commitment to customer satisfaction make it a trusted partner for commercial truck operators and manufacturers alike. The 3926780 Plain Washer, as a Cummins product, benefits from this legacy of quality and reliability.

Cummins Engine Part 3926780: Plain Washer Application

The Cummins Plain Washer part number 3926780 is a critical component in the assembly of various engine systems. This part is designed to provide a smooth, flat surface that ensures proper alignment and sealing between engine parts. Its application spans across multiple Cummins engine models, ensuring compatibility and reliability in diverse engine configurations.

Application in Specific Engine Models

6B5.9 Engine Series

The 6B5.9 engine series benefits from the precision and durability of the 3926780 Plain Washer. This part is integral in maintaining the integrity of engine assemblies by providing a stable interface between moving parts, reducing friction, and preventing leaks. Its use in the 6B5.9 series highlights its versatility and importance in engine maintenance and repair.

Grouping of Engine Models

The 3926780 Plain Washer is not limited to a single engine model but is strategically used across various Cummins engine groups. This part’s design and material composition make it suitable for high-stress environments, ensuring long-lasting performance and reliability. Its application in multiple engine groups underscores its critical role in the overall functionality and durability of Cummins engines.

Role of Part 3926780 Plain Washer in Engine Systems

In engine systems, the 3926780 Plain Washer is utilized to ensure smooth operation and reduce friction between moving components. Here’s how it integrates with specific components:

• Lever: The Plain Washer is often placed between the lever and its mounting point. This reduces wear and tear on the lever by minimizing direct metal-to-metal contact, thereby enhancing the lever’s longevity and operational efficiency.

• Throttle: In throttle mechanisms, the Plain Washer is used to maintain a consistent gap between the throttle plate and the throttle body. This ensures that the throttle opens and closes smoothly, which is essential for precise fuel and air mixture control.

• Throttle Bracket: When installed in a throttle bracket, the Plain Washer helps in aligning the bracket correctly with the throttle body. It also absorbs vibrations, which can otherwise lead to misalignment or damage over time.

• Throttle Control Bracket: For the throttle control bracket, the Plain Washer plays a role in reducing friction between the bracket and the control linkage. This ensures that the throttle responds accurately to driver inputs, which is vital for maintaining engine performance and drivability.

• Throttle Kit: In a comprehensive throttle kit, the Plain Washer is included to enhance the assembly’s overall durability. It ensures that all moving parts within the kit operate with minimal resistance, contributing to the kit’s reliable performance over extended use.

By incorporating the Plain Washer in these components, engineers and mechanics can achieve smoother operation, reduced maintenance needs, and improved overall efficiency in engine systems.

Conclusion

The 3926780 Plain Washer by Cummins is a vital component in commercial truck applications, ensuring the integrity and efficiency of various truck components and systems. Its role in load distribution, fastening security, and reducing friction between moving parts makes it indispensable in engine systems. Proper installation, regular maintenance, and understanding its application across different engine models are key to leveraging its full benefits.