4078955
Lock Washer
Cummins®

Introduction

The Cummins 4078955 Lock Washer is a specialized component designed for use in commercial truck maintenance and operation. Its purpose is to enhance the security of fastenings, particularly in environments where vibrations and movements are common. This Cummins part is integral to maintaining the integrity of bolted connections in commercial trucks, ensuring that components remain securely fastened under various operational conditions.

Basic Concepts of Lock Washers

Lock washers are designed to prevent the loosening of fasteners by counteracting the effects of vibration and movement. Unlike standard washers, which primarily distribute load and protect surfaces, lock washers incorporate features that create friction or bite into the surfaces they are placed between. This additional friction helps to keep the fastener in place, reducing the likelihood of loosening over time ¹.

Purpose of the 4078955 Lock Washer

The Cummins 4078955 Lock Washer is specifically engineered to address the challenges of fastening security in commercial trucks. It plays a role in preventing fastening loosening due to the constant vibration and movement experienced by trucks during operation. By ensuring that bolts and nuts remain tightly secured, this lock washer contributes to the overall reliability and safety of the vehicle ².

Key Features

The Cummins 4078955 Lock Washer is characterized by several key features that enhance its performance. It is made from high-quality materials that offer durability and resistance to wear. The design includes specialized elements that increase its locking capability, such as serrated edges or a split design that creates additional friction. These features work together to provide a secure fastening solution that is both effective and long-lasting ³.

Benefits

Using the Cummins 4078955 Lock Washer offers several advantages. It provides improved fastening security, which is particularly important in the demanding conditions faced by commercial trucks. This increased security can lead to a reduction in maintenance frequency, as fasteners are less likely to loosen over time. Additionally, by minimizing the need for frequent re-tightening or replacement of fasteners, fleet operators may experience potential cost savings.

Installation Guidelines

Proper installation of the Cummins 4078955 Lock Washer is crucial for its effectiveness. It should be placed under the nut or bolt head, ensuring that it is correctly aligned with the fastener. Care should be taken to avoid over-tightening, as this can lead to damage or reduced effectiveness. Following manufacturer guidelines for torque specifications is recommended to ensure the fastener is secure without being overly tightened.

Troubleshooting and Maintenance

Common issues with lock washers can include deformation or failure to provide the intended locking effect. Regular inspection of lock washers during maintenance checks can help identify any signs of wear or damage. If a lock washer appears deformed or shows signs of failure, it should be replaced to maintain the integrity of the fastening. Proper storage and handling of lock washers can also contribute to their longevity.

Compatibility and Application

The Cummins 4078955 Lock Washer is designed for use in various applications within commercial truck systems. It is commonly employed in assemblies where secure fastening is critical, such as in engine components, chassis parts, and other areas subject to vibration and movement.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and commitment to quality, Cummins serves commercial, industrial, and automotive markets. The company’s product range includes a variety of components and systems designed to enhance the performance, reliability, and efficiency of vehicles and equipment.

Lock Washer 4078955 Compatibility with Cummins Engines

The Lock Washer 4078955, manufactured by Cummins, is a critical component designed to ensure secure fastening in various engine applications. This part is engineered to maintain the integrity of bolted connections by preventing loosening due to vibration or movement. Below is a detailed overview of its compatibility with specific Cummins engines.

K38 and K50 Engines

The Lock Washer 4078955 is specifically designed to fit seamlessly with the K38 and K50 engines. These engines, while distinct in their configurations and applications, share common design principles that necessitate the use of such a washer.

• K38 Engine: This engine model benefits from the Lock Washer 4078955 in several critical areas where bolted connections are subject to high stress and frequent vibrations. The washer’s design ensures that the bolts remain tightly secured, enhancing the engine’s overall reliability and performance.

• K50 Engine: Similarly, the K50 engine incorporates the Lock Washer 4078955 in key locations where maintaining a firm connection is paramount. The washer’s robust construction and precise fitment are essential for the engine’s operational integrity, particularly in high-stress environments.

By ensuring that the Lock Washer 4078955 is correctly installed in these engines, maintenance personnel can significantly reduce the risk of bolt failure, thereby extending the lifespan of the engine components and ensuring consistent performance.

Role of Part 4078955 Lock Washer in Engine Systems

In engine systems, the part 4078955 Lock Washer is instrumental in ensuring the secure fastening of various components, thereby maintaining the integrity and efficiency of the system.

Integration with Heat Exchangers

When installed in heat exchangers, the Lock Washer 4078955 plays a significant role in preventing the loosening of bolts and nuts that secure the heat exchanger to its mounting points. This is particularly important in environments where vibrations are common, such as in automotive or industrial engine systems. By maintaining a tight seal, the Lock Washer helps to ensure that the heat exchanger operates efficiently, transferring heat effectively between the engine’s coolant and the surrounding air.

Application in Heat Exchanger Systems

In heat exchanger systems, the Lock Washer is often used in conjunction with flanges and gaskets. It ensures that the pressure within the system is maintained, preventing leaks that could lead to a loss of efficiency or even system failure. The Lock Washer’s ability to resist loosening under dynamic conditions makes it an invaluable component in these applications.

Enhancing System Reliability

The use of part 4078955 in engine systems contributes to the overall reliability of the heat exchanger. By securing critical fasteners, it helps to maintain the structural integrity of the heat exchanger, ensuring that it can withstand the operational stresses and thermal cycles it experiences during normal operation. This, in turn, supports the consistent performance of the engine system, reducing the likelihood of unexpected downtime or maintenance requirements.

Conclusion

The Cummins 4078955 Lock Washer is a vital component in the maintenance and operation of commercial trucks and engine systems. Its design and features are tailored to provide secure fastening in environments prone to vibration and movement, enhancing the reliability and safety of the vehicle. Proper installation, regular maintenance, and understanding its compatibility with specific engine models are key to maximizing the benefits of this Cummins part.