4900422
Lock Washer
Cummins®

Introduction

The Cummins 4900422 Locking Washer is a specialized component designed for use in commercial truck applications. Its purpose is to enhance the security of bolted connections, ensuring that fasteners remain tight under various operating conditions. This washer is significant in maintaining the integrity and safety of truck assemblies, particularly in environments where vibrations and dynamic loads are common.

Basic Concepts of Locking Washers

Locking washers are mechanical devices used to prevent fasteners from loosening. They function by applying additional pressure to the bolt or nut, creating friction that resists movement. General applications of locking washers include securing components in automotive, aerospace, and industrial machinery where reliability and safety are paramount ¹.

Purpose of the Cummins 4900422 Locking Washer

The Cummins 4900422 Locking Washer plays a specific role in the operation and maintenance of commercial trucks by providing enhanced fastening security. It is designed to be used in conjunction with bolts and nuts to ensure that critical connections remain intact, even under the stress of heavy loads and vibrations typical in truck operations.

Key Features

The Cummins 4900422 Locking Washer features a unique design that includes serrated edges or a split body, which digs into the mating surfaces when tightened. This design element increases the friction between the washer and the surfaces, thereby enhancing the washer’s performance and reliability in securing fasteners.

Benefits

Using the Cummins 4900422 Locking Washer offers several advantages. It provides improved fastening security by preventing bolts from loosening, which is particularly beneficial in applications subject to vibration. Additionally, its design contributes to the longevity of fastening solutions in harsh conditions, reducing the need for frequent maintenance and replacements ².

Installation Guidelines

To install the Cummins 4900422 Locking Washer correctly, place it under the bolt head or nut before tightening. Ensure that the washer is properly aligned with the fastener and the mating surface. Tighten the bolt or nut to the manufacturer’s specified torque settings to ensure optimal performance and safety.

Troubleshooting Common Issues

Frequent problems with locking washers may include improper installation, leading to reduced effectiveness, or wear and tear over time. To address these issues, verify the correct installation procedure and regularly inspect the washer for signs of damage or deformation. Replace the washer if any issues are detected to maintain the integrity of the fastening solution.

Maintenance Tips

Regular inspection and maintenance of the Cummins 4900422 Locking Washer are recommended to prolong its service life and ensure continued reliability. Check for signs of wear, corrosion, or damage during routine maintenance checks. Replace the washer as needed to prevent fastening failures and ensure the safety and performance of the truck.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions technologies. With a strong reputation in the commercial vehicle industry, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product range serves various markets, from on-highway to off-highway applications, demonstrating its versatility and expertise in power solutions.

Compatibility with Cummins Engines

This Cummins part is designed to fit seamlessly within a range of Cummins engines. It is crucial for ensuring secure fastening and preventing loosening of bolts and screws under vibration and stress. Here’s how it integrates with specific Cummins engines:

A1400 and A1700 Engines

The A1400 and A1700 engines are part of the smaller Cummins engine family, often used in compact machinery and light-duty applications. The 4900422 is engineered to fit these engines by providing a reliable locking mechanism that maintains the integrity of bolted connections. This is particularly important in these engines where precise fastening is critical for performance and safety.

A2000 and A2300 Engines

Moving to the larger A2000 and A2300 engines, the 4900422 is equally essential. These engines are typically used in medium to heavy-duty applications, where the demands on the engine components are significantly higher. The washer’s design ensures that it can withstand the increased stress and vibrations associated with these larger engines, providing a dependable locking solution that enhances the overall durability and reliability of the engine assembly.

Grouping for Efficiency

When considering the A1400 and A1700 engines together, it’s evident that the 4900422 serves a similar purpose in both, ensuring that the fastenings remain secure in smaller, lighter-duty applications. Similarly, the A2000 and A2300 engines benefit from the washer’s robust design, which is tailored to handle the higher demands of medium to heavy-duty operations. This grouping highlights the versatility and broad applicability of the 4900422 across different engine sizes and usage scenarios.

Role in Engine Systems

In the intricate assembly of engine systems, the 4900422 plays a significant role in ensuring the stability and efficiency of various components. When integrated with the lever and rocker mechanisms, this locking washer enhances the overall performance and reliability of the engine.

Integration with Lever Mechanisms

The lever is a fundamental component in many engine systems, often used to transmit force or motion. The 4900422 is employed to secure the lever to its pivot point, preventing any unwanted movement or loosening. This ensures that the lever operates smoothly and consistently, which is essential for the precise control of engine functions. By maintaining the lever’s position, the locking washer contributes to the stability of the engine’s operational dynamics.

Application in Rocker Mechanisms

Rocker mechanisms are commonly used in engine systems to convert linear motion into rotational motion, or vice versa. The 4900422 is critical in securing the rocker to its mounting point. This prevents any shifting or misalignment that could disrupt the rocker’s function. The secure fit provided by the locking washer ensures that the rocker can perform its intended motion conversion efficiently, which is vital for the engine’s overall performance.

In both lever and rocker applications, the 4900422 acts as a reliable component that enhances the integrity of the engine system. Its role in maintaining the precise alignment and secure attachment of these moving parts is indispensable for the smooth and effective operation of the engine.

Conclusion

The Cummins 4900422 Locking Washer is a vital component in the maintenance and operation of commercial trucks and various Cummins engines. Its design and functionality ensure secure fastening under dynamic conditions, contributing to the overall safety and performance of the vehicle. Regular maintenance and proper installation are key to maximizing the benefits of this part.