3967288
Plain Washer
Cummins®

Introduction

The Cummins 3967288 Plain Washer is a component designed for use in commercial trucks. It serves a specific function within the truck’s mechanical system, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and role is fundamental for maintaining and optimizing truck performance.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. They are flat, annular devices typically made from metal or plastic. Their primary function is to distribute the load of a threaded fastener, such as a bolt or screw, over a larger area. This helps prevent damage to the surface and ensures even pressure distribution ¹. Additionally, plain washers can provide spacing between components, reduce friction, and act as a barrier to prevent galvanic corrosion between dissimilar metals.

Purpose of the Cummins 3967288 Plain Washer

The Cummins 3967288 Plain Washer plays a role in the operation of a truck by distributing the load of fasteners, which helps prevent wear on mating surfaces. It ensures proper spacing between components, which is crucial for the alignment and function of various truck parts. By maintaining consistent spacing, the washer contributes to the stability and integrity of the truck’s mechanical assemblies.

Key Features

The Cummins 3967288 Plain Washer is characterized by several key features that make it suitable for heavy-duty applications. It is typically made from high-strength materials to withstand the rigors of commercial truck use. The washer’s dimensions are precisely engineered to fit specific fasteners and applications, ensuring optimal performance. Its design is simple yet effective, providing the necessary functionality without unnecessary complexity.

Benefits of Using Plain Washers

Incorporating plain washers like the Cummins 3967288 in truck assemblies offers several advantages. These washers enhance the durability of fasteners by distributing loads more evenly, which reduces the risk of surface damage and component failure. They also improve load distribution across joints, which can lead to prolonged component life and increased reliability of the truck’s mechanical systems ².

Installation Considerations

Proper installation of the Cummins 3967288 Plain Washer is crucial for its effective function. It should be installed with the correct torque specifications to ensure that fasteners are tightened to the manufacturer’s recommended levels. Alignment is also important; the washer must be properly seated to ensure even load distribution and to prevent damage to surrounding components. Common pitfalls during installation include over-tightening, which can lead to washer deformation, and misalignment, which can cause uneven load distribution.

Troubleshooting and Maintenance

Identifying issues with plain washers involves checking for signs of wear, deformation, or improper seating. Regular maintenance practices, such as inspecting washers during routine service intervals and replacing them as needed, can help ensure optimal performance and longevity. It is also important to ensure that washers are compatible with the fasteners and applications they are used in to prevent issues related to misfit or material incompatibility.

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 strong reputation in the commercial truck industry for producing reliable and high-performance components. The company’s product range includes a variety of parts and systems designed to meet the demanding requirements of commercial vehicles.

Cummins Engine Part 3967288: Plain Washer Application

The Cummins part 3967288, a Plain Washer, is a component in the maintenance and operation of several Cummins engine models. This part is designed to provide a smooth and secure fit, ensuring that various engine parts are properly aligned and sealed. Here’s how it integrates with the specified engines:

4B3.9 and 6B5.9 Engines

The Plain Washer 3967288 is utilized in both the 4B3.9 and 6B5.9 engines to maintain the integrity of the engine’s sealing and alignment. In these engines, the washer is often employed in areas where precise spacing and pressure are necessary to prevent leaks and ensure optimal performance. Its application in these engines highlights its versatility and importance in maintaining the overall functionality of the engine.

6C8.3 and L8.9 Engines

Similarly, the 6C8.3 and L8.9 engines benefit from the use of the Plain Washer 3967288. In these larger engines, the washer plays a role in maintaining the alignment of various components, ensuring that the engine operates smoothly and efficiently. Its use in these engines underscores its significance in the broader context of engine maintenance and reliability.

By incorporating the Plain Washer 3967288 into these engines, Cummins ensures that the engines can perform at their best, with reduced risk of leaks and misalignment issues. This part is a testament to Cummins’ commitment to providing high-quality components that enhance engine performance and longevity.

Role of Part 3967288 Plain Washer in Engine Systems

In the intricate network of an engine system, the part 3967288 Plain Washer assumes a significant role by ensuring the smooth operation and efficiency of various components.

Control Mechanisms

Within control systems, the Plain Washer is instrumental in maintaining the integrity of connections. It provides a stable and secure interface between moving parts, reducing friction and wear. This is particularly important in manual throttle levers where consistent and reliable operation is essential for precise control over engine performance.

Throttle and Lever Assemblies

In throttle and lever assemblies, the Plain Washer facilitates smooth movement and reduces the risk of binding. By doing so, it ensures that the throttle responds accurately to driver inputs, which is vital for maintaining engine efficiency and performance. The washer’s role in these assemblies helps in prolonging the lifespan of the components by minimizing wear and tear.

Plumbing and Radiator Systems

In plumbing and radiator systems, the Plain Washer is used to create leak-proof seals. It ensures that coolant and other fluids are contained within the system, preventing leaks that could lead to engine overheating or failure. The washer’s ability to form a tight seal is essential for maintaining the proper flow of fluids, which is critical for engine cooling and overall system efficiency.

Valve Operations

Valve operations within an engine rely on the Plain Washer to ensure that connections remain tight and secure. This is particularly important in fuel shutoff valves where any leakage could result in unsafe operating conditions. The washer helps in maintaining the integrity of the valve seal, ensuring that fuel is delivered efficiently and safely.

Fuel Shutoff Systems

In fuel shutoff systems, the Plain Washer plays a key role in ensuring that the shutoff mechanism operates smoothly and reliably. It helps in creating a secure connection that prevents fuel leakage, which is essential for safe engine operation. The washer’s presence ensures that the shutoff valve can be engaged and disengaged with precision, contributing to the overall safety and efficiency of the engine system.

Conclusion

The Cummins 3967288 Plain Washer is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its role in distributing loads, ensuring proper spacing, and maintaining the integrity of connections across various engine systems underscores its importance in enhancing engine performance and reliability. Proper installation, regular maintenance, and understanding its application in different engine models are essential for maximizing the benefits of this Cummins part.