3907206
Plain Washer
Cummins®

Introduction

The Cummins 3907206 Plain Washer is a component designed for use in commercial truck maintenance and operation. This washer plays a role in ensuring the stability and efficiency of various truck systems by providing necessary support and distribution of loads across fasteners. Its significance lies in its ability to enhance the reliability and longevity of truck components, contributing to overall vehicle performance and safety ¹.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. They function primarily to distribute the load of a fastener, such as a bolt or nut, across a larger surface area. This distribution helps prevent damage to the surfaces being joined and reduces the risk of the fastener pulling through the material. Additionally, plain washers can provide a degree of cushioning and vibration damping, which contributes to the stability and efficiency of mechanical components ².

Purpose of the Cummins 3907206 Plain Washer

The Cummins 3907206 Plain Washer is specifically designed to play a role in various truck systems and components. It is used in applications where load distribution and surface protection are necessary. This washer can be found in engine mounts, transmission systems, and other critical areas where fasteners are employed. Its purpose is to ensure that the load from these fasteners is evenly distributed, reducing wear and tear on both the fasteners and the surfaces they connect ³.

Key Features

The Cummins 3907206 Plain Washer is characterized by several key features that enhance its functionality and durability. It is typically made from high-quality materials that offer resistance to wear and corrosion. The dimensions of the washer are precisely engineered to fit specific applications, ensuring optimal performance. Additionally, the design of the washer may include features such as a smooth surface to reduce friction and a consistent thickness to ensure even load distribution ⁴.

Benefits of Using Plain Washers

Incorporating plain washers like the Cummins 3907206 in truck maintenance offers several advantages. These washers help improve load distribution, which reduces the risk of fasteners pulling through materials and causing damage. They also minimize wear on fasteners by providing a barrier between the fastener and the surface, leading to extended component life. Furthermore, plain washers contribute to enhanced overall system reliability by ensuring that connections remain secure and stable under various operating conditions ¹.

Installation and Usage Guidelines

Proper installation of the Cummins 3907206 Plain Washer is important for ensuring its effectiveness. It should be placed under the head of a bolt or nut, or between the fastener and the surface being joined. When installing, it is important to ensure that the washer is correctly aligned and that it lies flat to achieve even load distribution. It is also important to use the correct size washer for the application to ensure compatibility with other components ².

Troubleshooting and Maintenance

Common issues associated with plain washers include deformation, corrosion, and wear. To identify problems, it is important to regularly inspect washers for signs of damage or deformation. Maintenance practices to ensure the longevity and optimal performance of the Cummins 3907206 Plain Washer include replacing worn or damaged washers promptly and ensuring that all fasteners are tightened to the manufacturer’s specifications. Additionally, using washers made from corrosion-resistant materials can help prevent issues related to environmental factors ³.

Cummins: A Brief 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 quality and innovation in the commercial truck industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and reliability of commercial vehicles. Cummins’ commitment to quality is evident in its rigorous testing and quality control processes, ensuring that its products meet the high standards required for commercial applications ⁴.

Cummins Engine Part 3907206: Plain Washer Compatibility

The Cummins part 3907206, a Plain Washer, is designed to fit a variety of Cummins engines. This component is essential for ensuring proper sealing and alignment in various engine assemblies. Below is a detailed breakdown of the engines with which this part is compatible:

Compatible Engines

• 6C8.3
• C GAS PLUS CM556
• C8.3 G
• G8.3
• G8.3 CM558
• GTA8.3 CM558
• ISL G CM2180
• L GAS PLUS CM556
• L8.9G CMOH2.0 L125B
• L9.3 L105
• QSL9 G CM558

Grouping of Compatible Engines

Group 1: G Series Engines

• G8.3
• G8.3 CM558
• GTA8.3 CM558

These engines share a common platform and design, making the Plain Washer part 3907206 a suitable fit for all three.

Group 2: L Series Engines

• L GAS PLUS CM556
• L9.3 L105

The L series engines, while differing in some specifications, are designed to accommodate the same type of washer for various sealing and alignment purposes.

Group 3: Other Compatible Engines

• 6C8.3
• C8.3 G
• L8.9G CMOH2.0 L125B
• QSL9 G CM558

These engines, while not part of a specific series, are also compatible with the Plain Washer part 3907206, ensuring that the washer can be used across a broad range of Cummins engine models.

Role of Part 3907206 Plain Washer in Engine Systems

In engine systems, the 3907206 Plain Washer is an essential component that facilitates the smooth operation of various mechanical parts. Specifically, it is utilized in the interaction between the lever and the rocker, as well as the rocker lever mechanisms.

Interaction with Lever and Rocker

The Plain Washer is positioned between the lever and the rocker to reduce friction and wear. This placement ensures that the lever can pivot smoothly over the rocker without direct metal-to-metal contact, which could lead to increased wear and potential failure over time. The washer’s smooth surface allows for efficient energy transfer and minimizes the risk of galling or seizing, maintaining the integrity and performance of the lever and rocker assembly ².

Function in Rocker Lever Mechanisms

In rocker lever systems, the 3907206 Plain Washer plays a similar role. It is often found at the pivot point where the rocker lever contacts its support structure. By providing a low-friction interface, the washer enables the rocker lever to oscillate with minimal resistance. This is particularly important in high-cycle applications where consistent and reliable operation is necessary to ensure the engine’s overall efficiency and longevity ³.

Enhanced Durability and Performance

The incorporation of the Plain Washer in these components not only enhances durability but also contributes to the precise functioning of the engine. By ensuring that moving parts operate with reduced friction, the washer helps in maintaining the designed clearances and tolerances, which are vital for the engine’s performance and reliability ⁴.

Conclusion

The Cummins 3907206 Plain Washer is a small yet significant component that plays a vital role in the efficient and durable operation of lever, rocker, and rocker lever systems within engine assemblies. Its proper installation and maintenance are crucial for ensuring the longevity and reliability of commercial truck components.