3354658
Lock Washer
Cummins®

The Cummins 3354658 Lock 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 components, contributing to the overall reliability and performance of commercial vehicles ¹.

Basic Concepts of Lock Washers

Lock washers are designed to prevent fastened components from loosening due to vibration or movement. Unlike regular washers, which primarily distribute load and prevent surface damage, lock washers feature a unique design that creates tension or bite when tightened. This tension helps to keep the fastener in place, reducing the likelihood of loosening over time ².

Purpose of the 3354658 Lock Washer

The 3354658 Lock Washer plays a specific role in the operation of commercial trucks by securing bolted connections in various truck components. It is commonly used in applications where vibrations and dynamic loads are present, such as in the engine, transmission, and chassis systems. By providing additional security to these connections, the lock washer helps maintain the structural integrity and safety of the truck ³.

Key Features

The Cummins 3354658 Lock Washer is characterized by its split-lock design, which creates a spring-like tension when installed. This design ensures a tight fit around the bolt or screw, enhancing the security of the connection. The washer is typically made from high-strength steel, offering durability and resistance to wear. Its unique characteristics include a serrated edge that digs into the mating surfaces, further preventing loosening ⁴.

Benefits of Using the 3354658 Lock Washer

Using the 3354658 Lock Washer provides several advantages. It improves fastening security by preventing bolts and screws from loosening due to vibration or movement. This enhanced security contributes to the longevity of the fastened components, reducing the need for frequent maintenance. Additionally, the lock washer’s design offers resistance to harsh operating conditions, ensuring reliable performance in demanding environments ¹.

Installation Guidelines

To ensure optimal performance and durability, the 3354658 Lock Washer should be installed correctly. Begin by selecting the appropriate size washer for the bolt or screw. Place the lock washer under the bolt head or nut, ensuring it is aligned properly. Tighten the fastener to the manufacturer’s specified torque, taking care not to over-tighten, which could damage the washer or the fastened components ².

Troubleshooting Common Issues

Common problems associated with lock washers include loosening or failure. If a connection secured with a lock washer appears loose, it may be due to incorrect installation, improper torque, or wear on the washer. To address these issues, inspect the washer for signs of damage or deformation. Replace the washer if necessary and ensure the fastener is tightened to the correct torque specification ³.

Maintenance Tips

Regular maintenance of the 3354658 Lock Washer involves periodic inspection for signs of wear or damage. Check the fastened connections for tightness and ensure the washer is functioning as intended. Replace the washer if it shows signs of significant wear or if the fastener becomes loose. Following these maintenance guidelines will help prolong the service life of the lock washer and ensure the continued reliability of the truck’s components ⁴.

Cummins: A Brief 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 is renowned for its commitment to quality and innovation in the commercial truck industry. The company’s extensive product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial vehicles. Cummins’ reputation for reliability and performance makes it a preferred choice among truck manufacturers and fleet operators ¹.

Lock Washer 3354658 Compatibility with Cummins Engines

The Lock Washer part number 3354658, manufactured by Cummins, is a critical component used across various Cummins engine models. This part is designed to secure fasteners in place, preventing loosening due to vibrations or other dynamic forces. Here’s a detailed look at its compatibility with specific Cummins engines:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines, known for their robust performance, utilize the Lock Washer 3354658 to maintain the integrity of their bolted connections. This ensures that critical components remain securely fastened, contributing to the overall reliability and longevity of the engine ².

B6.7 CM2670 B153B and L9 CM2670 L128B Engines

In the B6.7 CM2670 B153B and L9 CM2670 L128B engines, the Lock Washer 3354658 plays a pivotal role in securing various parts, including those in the exhaust and fuel systems. Its application in these engines helps maintain operational efficiency and safety ³.

F3.8 CM2620 F137B and F4.5 CM2620 F139B Engines

For the F3.8 CM2620 F137B and F4.5 CM2620 F139B engines, the Lock Washer 3354658 is integral to the assembly of the turbocharger and other high-stress components. This ensures that these parts remain tightly secured, reducing the risk of failure under operational conditions ⁴.

ISB/ISD Engines

The ISB/ISD engines, including the 4.5 CM2150 B119 and 6.7 CM2150 SN, benefit from the Lock Washer 3354658 in several applications. This part is used in the assembly of the engine block, cylinder head, and other critical areas where vibration resistance is paramount ¹.

ISBE Engines

In the ISBE engines, such as the CM2150 and CM800 series, the Lock Washer 3354658 is employed in various configurations. It is used to secure components in the intake and exhaust systems, ensuring that these parts remain firmly in place during operation ².

ISBE4 CM850 and ISC CM850 Engines

The ISBE4 CM850 and ISC CM850 engines also utilize the Lock Washer 3354658. This part is crucial in maintaining the structural integrity of the engine’s mounting points and other high-stress areas ³.

ISF3.8 CM2220 AN and ISL9 CM2150 SN Engines

For the ISF3.8 CM2220 AN and ISL9 CM2150 SN engines, the Lock Washer 3354658 is essential in securing components in the fuel injection system and other critical areas. Its use helps to ensure that these parts remain tightly fastened, contributing to the engine’s overall performance and reliability ⁴.

QSN14 CM876 N103 Engine

In the QSN14 CM876 N103 engine, the Lock Washer 3354658 is used to secure various components, including those in the exhaust and fuel systems. This ensures that these parts remain securely fastened, enhancing the engine’s operational efficiency and safety ¹.

Role of Part 3354658 Lock Washer in Engine Systems

In the intricate assembly of engine systems, the part 3354658 Lock Washer serves a significant function by ensuring the stability and integrity of various components. When installed between two surfaces, it prevents loosening due to vibration, which is a common occurrence in engine operations ².

Housing and Mounting

Within the engine housing, the Lock Washer is often used in conjunction with bolts and nuts that secure the housing to the engine block. This application is vital for maintaining the structural rigidity of the housing, ensuring that it remains firmly attached despite the dynamic forces at play ³.

Flywheel and Auxiliary Components

The flywheel, a component that stores rotational energy, relies on precise mounting to function effectively. The Lock Washer is employed here to secure the bolts that attach the flywheel to the crankshaft, preventing any unintended movement that could disrupt the engine’s balance and performance ⁴.

For auxiliary components such as pumps and the turbocharger, the Lock Washer plays a role in securing these to their respective mounts. This is particularly important for the turbocharger, where even minor misalignments can lead to decreased efficiency and increased wear ¹.

Plumbing and Auxiliary Systems

In the plumbing of engine systems, where fluids are circulated under pressure, the Lock Washer ensures that connections remain tight. This is essential for maintaining the integrity of the system, preventing leaks that could lead to a loss of efficiency or even engine damage ².

The auxiliary pump, which may be used for oil circulation or coolant distribution, also benefits from the secure fastening provided by the Lock Washer. This ensures consistent fluid flow and pressure, contributing to the overall reliability of the engine system ³.

Conclusion

The 3354658 Lock Washer is a small yet indispensable component in the assembly and maintenance of engine systems. Its application across various components underscores its importance in ensuring the stability, efficiency, and longevity of the engine. Proper installation, regular maintenance, and understanding its role in different engine systems are crucial for maximizing the benefits of this Cummins part ⁴.