3967287
Spring Washer
Cummins®

Introduction

The Cummins 3967287 Spring Washer is a specialized component designed for use in commercial trucks. Its primary role is to enhance the reliability and performance of bolted connections in various truck systems. By ensuring consistent bolt tension and preventing loosening, this spring washer contributes to the overall durability and safety of the vehicle ⁴.

Basic Concepts of Spring Washers

Spring washers, also known as lock washers, are mechanical devices used to prevent fastening elements, such as bolts and nuts, from loosening due to vibration or other dynamic forces. They function by applying a constant tension to the fastener, which helps maintain the integrity of the connection. Spring washers are commonly used in a wide range of mechanical systems where secure fastening is essential ¹.

Purpose of the Cummins 3967287 Spring Washer

The Cummins 3967287 Spring Washer plays a role in the operation of a truck by maintaining bolt tension and preventing loosening. This is particularly important in environments where vibrations are common, such as in commercial trucks. By ensuring that bolts remain securely fastened, the spring washer helps to maintain the structural integrity of various truck components, enhancing both safety and performance ².

Key Features

The Cummins 3967287 Spring Washer is characterized by several specific features that enhance its performance. It is typically made from high-strength materials, such as spring steel, which provide the necessary resilience and durability. The design of the washer includes a series of coils or toothed edges that create tension when the fastener is tightened, ensuring a secure fit. Additionally, the washer is engineered to withstand the harsh conditions often encountered in commercial truck applications ³.

Benefits of Using Spring Washers

Incorporating spring washers in truck maintenance offers several advantages. These include increased durability of fastened connections, improved safety by reducing the risk of component failure due to loosening, and enhanced overall performance of the truck. Spring washers help to ensure that critical components remain securely attached, even under demanding conditions ⁴.

Installation and Usage Guidelines

Proper installation of the Cummins 3967287 Spring Washer involves placing it between the bolt head or nut and the surface being fastened. It is important to ensure that the washer is correctly oriented, with the coils or teeth facing the direction of the applied force. Best practices for usage include regularly inspecting the washer for signs of wear or damage and replacing it as necessary to maintain optimal performance. Common applications within truck maintenance include securing engine components, chassis parts, and other critical fastening points ¹.

Troubleshooting and Maintenance

Identifying issues related to spring washers involves checking for signs of wear, deformation, or corrosion. Common problems may include reduced tension, which can lead to loosening of the fastener. Maintenance practices to ensure longevity and optimal performance include regular inspection and replacement of worn or damaged washers, as well as ensuring that all fastening elements are properly torqued to the manufacturer’s specifications ².

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 systems, and related components. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance products. The company’s extensive product range and commitment to innovation make it a trusted name among truck manufacturers and fleet operators ³.

Cummins Engine Part 3967287: Spring Washer Application

The Spring Washer part number 3967287, manufactured by Cummins, is a critical component in the assembly and operation of several Cummins engine models. This part is designed to provide a secure and reliable connection between various engine parts, ensuring that they remain tightly fastened and properly aligned.

Application in Specific Cummins Engines

4B3.9 and 6B5.9 Engines

In the 4B3.9 and 6B5.9 engines, the Spring Washer 3967287 is utilized in several key areas. It is commonly found in the valve train assembly, where it helps maintain the correct tension on valve springs. This ensures that the valves operate smoothly and efficiently, preventing any potential valve float or damage due to improper valve clearance.

Additionally, this washer is often used in the cylinder head and block assembly, where it aids in securing bolts and nuts to prevent loosening under the high stresses and vibrations typical of engine operation.

6C8.3 and L8.9 Engines

For the 6C8.3 and L8.9 engines, the Spring Washer 3967287 plays a similar role. It is integral in the valve train, where it helps maintain the precise tension necessary for optimal valve operation. This is crucial for the performance and longevity of the engine, as it ensures that the valves open and close at the correct times.

Moreover, this washer is employed in other critical areas such as the fuel injection system and turbocharger assembly. In these applications, it ensures that all components are securely fastened, reducing the risk of leaks and mechanical failure.

Importance of the Spring Washer

The Spring Washer 3967287 is essential for maintaining the integrity of the engine’s mechanical components. Its design allows it to distribute the load evenly and absorb the dynamic forces experienced during engine operation. This helps prevent loosening of fasteners and ensures that the engine operates at peak efficiency.

By providing a consistent and reliable connection, the Spring Washer 3967287 contributes to the overall durability and performance of the Cummins engines it is used in. Its application across various engine models underscores its versatility and importance in maintaining engine reliability and efficiency ³.

Role of Part 3967287 Spring Washer in Engine Systems

The 3967287 Spring Washer is an essential component in various engine systems, providing stability and ensuring the proper functioning of several key elements.

In the Air Heater Starting System, the Spring Washer is utilized to maintain consistent pressure and prevent leaks at connection points. This ensures that the air heater system operates efficiently, providing the necessary warmth to aid in engine starting under cold conditions.

Within the Control and Manual Throttle Lever Systems, the Spring Washer plays a significant role in maintaining the integrity of the connections between the throttle lever and the control mechanisms. By doing so, it ensures smooth and precise throttle operation, which is vital for engine performance and responsiveness.

In Plumbing Systems associated with engines, the Spring Washer is employed at various joints and fittings. Its primary function here is to create a secure seal, preventing fluid leaks and ensuring that the plumbing system remains pressurized and operational.

The Radiator System also benefits from the inclusion of the Spring Washer. It is used at connection points to the radiator, ensuring that coolant flows smoothly without any leaks. This is important for maintaining optimal engine temperature and preventing overheating.

In Rail and Base Systems, where components are often subjected to vibration and movement, the Spring Washer helps to secure fittings and connections. This ensures that the rail and base systems remain stable and function correctly, contributing to the overall structural integrity of the engine.

For the Valve and Fuel Shutoff Systems, the Spring Washer is critical in maintaining the seals at various connection points. This ensures that the valve operations are smooth and that the fuel shutoff system functions reliably, which is essential for safe and efficient engine operation ⁴.

Conclusion

The Cummins 3967287 Spring Washer is a vital component in ensuring the reliability and performance of bolted connections in commercial trucks and Cummins engines. Its design and application across various systems highlight its importance in maintaining the structural integrity, safety, and efficiency of these vehicles. Regular maintenance and proper installation are key to maximizing the benefits of this part.