3521119
Lock Washer
Cummins®

The Cummins 3521119 Lock Washer is a specialized component designed for use in commercial truck maintenance. Its purpose is to enhance the stability and integrity of bolted connections, ensuring that critical components remain securely fastened under various operational conditions. This part is part of Cummins Inc.’s extensive range of high-quality automotive and heavy-duty truck parts, reflecting the company’s commitment to reliability and performance in the commercial vehicle industry ¹.

Basic Concepts of Lock Washers

Lock washers are a type of washer used in fastening systems to prevent loosening of nuts and bolts due to vibration or other dynamic forces. Unlike regular washers, which primarily distribute load and protect surfaces, lock washers incorporate features designed to create friction or mechanical interference. This can include split designs, serrated edges, or conical shapes that dig into the mating surfaces when tightened, thereby reducing the likelihood of unintended movement ².

Purpose of the Cummins 3521119 Lock Washer

The Cummins 3521119 Lock Washer plays a specific role in the operation and maintenance of commercial trucks by ensuring the stability and integrity of bolted connections. It is designed to counteract the effects of vibration and dynamic loads that can cause standard fasteners to loosen over time. By providing additional security, this lock washer helps maintain the structural integrity of critical components, contributing to the overall safety and reliability of the vehicle ¹.

Key Features

The Cummins 3521119 Lock Washer is distinguished by several key features that enhance its performance. Its design incorporates a split or serrated edge that creates mechanical interference when tightened, effectively locking the fastener in place. The material composition typically includes high-strength steel, ensuring durability and resistance to wear. Additionally, the washer may feature a unique shape or coating that further improves its locking capabilities and resistance to corrosion ².

Benefits of Using the Cummins 3521119 Lock Washer

Using the Cummins 3521119 Lock Washer offers several advantages. It provides improved vibration resistance, which is crucial in the dynamic environment of commercial trucks. The enhanced load distribution helps protect both the fastener and the mating surfaces from undue stress. Furthermore, the increased fastening security ensures that critical components remain securely attached, reducing the risk of failure and enhancing overall vehicle safety ¹.

Installation Guidelines

Proper installation of the Cummins 3521119 Lock Washer is vital to ensure optimal performance and longevity. Begin by selecting the appropriate size and type of fastener for the application. Place the lock washer under the nut or bolt head, ensuring that the serrated or split edge is in contact with the mating surface. Tighten the fastener to the manufacturer’s specified torque, taking care not to over-tighten, which could damage the washer or the surfaces it contacts. Regular inspection and re-torqueing may be necessary to maintain the integrity of the connection ².

Troubleshooting Common Issues

Common issues with lock washers can include failure to prevent loosening, damage due to improper installation, or corrosion. If a lock washer fails to secure a fastener, it may be due to incorrect sizing, inadequate torque, or environmental factors such as corrosion. To address these issues, verify the correct washer size and material for the application, ensure proper installation torque, and consider protective coatings or treatments to mitigate corrosion in harsh environments ¹.

Maintenance Tips

Regular inspection and maintenance of lock washers are important to prolong their service life and ensure continued reliable performance. Inspect washers for signs of wear, corrosion, or damage during routine maintenance checks. Replace any washers that show signs of deterioration. Additionally, ensure that fasteners are properly torqued and re-torqued as necessary to maintain secure connections. Keeping the mating surfaces clean and free of debris will also help prevent premature wear and ensure the effectiveness of the lock washer ².

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of engines, filtration, and power generation products. Founded in 1919, Cummins has built a reputation for innovation, quality, and reliability in the commercial vehicle industry. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial and industrial applications. Cummins’ commitment to customer satisfaction and technological advancement has made it a trusted name in the industry ¹.

Compatibility of Lock Washer 3521119 with Cummins Engines

The Lock Washer part number 3521119, manufactured by Cummins, is designed to be compatible with several of their engine models. This part is essential for ensuring secure fastening and preventing loosening of bolts and screws in various engine components.

K19 Engines

In the K19 engine series, the Lock Washer 3521119 is utilized in several critical areas where vibration and movement can lead to loosening of fasteners. Its application helps maintain the integrity of connections in high-stress environments.

N14 CELECT and N14 MECHANICAL Engines

For both the N14 CELECT and N14 MECHANICAL engines, the Lock Washer 3521119 is integral to maintaining the stability of numerous engine components. Its use is widespread across various parts of the engine, ensuring that bolts and screws remain tightly secured, even under the demanding conditions of engine operation.

NH/NT 855 Engines

The NH/NT 855 engines also benefit from the Lock Washer 3521119. This part is employed in several key locations within the engine to prevent loosening of fasteners, ensuring that the engine operates smoothly and reliably. Its application is crucial in maintaining the structural integrity of the engine under operational stresses.

By ensuring that bolts and screws remain securely fastened, the Lock Washer 3521119 plays a vital role in the overall performance and longevity of these Cummins engines ¹.

Role of Part 3521119 Lock Washer in Engine Systems

Part 3521119 Lock Washer is integral in ensuring the secure fastening of various components within engine systems, particularly those involving high-performance and aftermarket modifications.

In the context of an Aftermarket Turbocharger installation, the lock washer is used to prevent the loosening of bolts and nuts that secure the turbocharger to the engine. This is vital for maintaining the integrity of the turbocharger mounting, ensuring it operates efficiently under high stress and vibration conditions.

When integrating an EBM-Injector or any high-performance injector, the lock washer plays a role in securing the injector to the engine block or cylinder head. This prevents any movement that could lead to leaks or improper fuel delivery, which is essential for consistent engine performance.

For the EBM-Turbocharger and associated EBM-Performance Parts, the lock washer is employed in the assembly of the turbocharger housing and other critical components. It ensures that all fasteners remain tight, which is important for the turbocharger’s durability and efficiency.

In the Engine Brake Control system, where precise control over engine components is necessary, the lock washer helps in maintaining the secure attachment of control kit components. This ensures that the brake control system functions reliably under varying engine loads.

During the installation of a Turbocharger Housing Repair Kit or a Turbocharger Kit, the lock washer is used to secure various housing components. This is important for preventing leaks and ensuring that the turbocharger housing maintains its structural integrity.

In the context of an Overhaul Kit for a turbocharger, the lock washer is used in reassembling the core assembly and other repaired parts. This ensures that all components are securely fastened, contributing to the longevity and performance of the overhauled turbocharger.

For Heat3B Turbocharger and HC3 Turbocharger systems, the lock washer is utilized in securing the turbocharger to the engine and in assembling the turbocharger parts kit. This is essential for withstanding the high temperatures and pressures these turbochargers operate under.

In summary, Part 3521119 Lock Washer is a fundamental component in the secure assembly and maintenance of various engine systems, particularly those involving high-performance and aftermarket parts. Its role in preventing fastener loosening is essential for the reliable operation and durability of these systems ².

Conclusion

The Cummins 3521119 Lock Washer is a critical component in the maintenance and operation of commercial trucks and various engine systems. Its design and features ensure secure fastening of critical components, enhancing the overall safety and reliability of the vehicle. Proper installation, regular maintenance, and understanding its role in different engine systems are essential for maximizing the benefits of this part.