3336123
Lock Washer
Cummins®

Introduction

The Cummins 3336123 Lock Washer is a specialized component designed for use in commercial truck maintenance and operation. Its primary role is to enhance the security of bolted connections, which are prevalent in the construction and fastening of truck components. By preventing the loosening of bolts and nuts, this lock washer contributes to the overall reliability and safety of truck operations ¹.

Basic Concepts of Lock Washers

Lock washers are a type of washer used in fastening applications to prevent the loosening of bolts and nuts. Unlike standard washers, which primarily distribute load and prevent damage to the surface, lock washers are designed with features that create tension or bite into the surfaces they are placed between. This tension helps to counteract the effects of vibration and movement, which can lead to the gradual loosening of fasteners over time ².

Function and Operation of the 3336123 Lock Washer

The Cummins 3336123 Lock Washer operates by utilizing a split design that creates a spring-like action when compressed under a bolt or nut. This design allows the washer to exert a continuous force on the surfaces it contacts, which helps to maintain the tightness of the fastener. In the context of a truck’s fastening system, this lock washer plays a role in mitigating the effects of road vibrations and dynamic loads, which are common in heavy-duty truck applications ³.

Key Features of the 3336123 Lock Washer

The Cummins 3336123 Lock Washer is characterized by its specific design elements and the materials used in its construction. It is typically made from high-strength steel, which provides the necessary durability and resistance to deformation under load. The split design of the washer ensures that it can adapt to various fastening scenarios, offering a versatile solution for securing bolts and nuts in heavy-duty truck applications.

Benefits of Using the 3336123 Lock Washer

The use of the Cummins 3336123 Lock Washer offers several advantages in truck operations. It enhances the security of fastenings by preventing the loosening of bolts and nuts, which can lead to component failure or increased maintenance requirements. Additionally, by maintaining the integrity of bolted connections, this lock washer contributes to the overall safety and reliability of truck operations, reducing the likelihood of accidents caused by fastener failure.

Installation Guidelines

To ensure optimal performance and longevity of the Cummins 3336123 Lock Washer, it is important to follow proper installation guidelines. The washer should be placed under the head of the bolt or the nut, ensuring that it is correctly oriented to exert the desired locking force. It is also important to use the appropriate torque specifications for the fastener to avoid over-tightening, which can lead to washer deformation or failure.

Troubleshooting Common Issues

Common issues associated with lock washers in truck applications include washer deformation, failure to prevent loosening, and corrosion. To address these issues, it is important to inspect the washers regularly for signs of wear or damage. If a washer appears deformed or shows signs of corrosion, it should be replaced to maintain the integrity of the fastening. Additionally, ensuring that the correct torque specifications are used during installation can help prevent washer failure.

Maintenance Tips

Maintaining the Cummins 3336123 Lock Washer involves regular inspection and cleaning to ensure its continued effectiveness. Inspection intervals should be aligned with the truck’s maintenance schedule, allowing for the early detection of any issues. Cleaning the washer and the surfaces it contacts can help prevent corrosion and ensure a secure fit. Replacement should be considered if the washer shows signs of significant wear or if it fails to maintain the desired locking force.

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 has established a reputation for quality and reliability in the commercial truck industry. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty truck applications.

Lock Washer 3336123 Compatibility with Cummins Engines

The Lock Washer part number 3336123, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is crucial for ensuring the stability and integrity of bolted connections within the engine assembly. Below is a detailed description of its compatibility with the specified engines:

QSV81G, QSV91G, and QSW/QSV82 Engines

The Lock Washer 3336123 is compatible with the QSV81G, QSV91G, and QSW/QSV82 engines. These engines are part of Cummins’ QSV series, which are known for their reliability and efficiency in various applications. The washer is engineered to fit the specific bolt sizes and threading requirements of these engines, ensuring a secure fit that prevents loosening due to vibration or thermal expansion.

QSW27 and QSW36 Engines

The Lock Washer 3336123 also fits the QSW27 and QSW36 engines. These engines are part of Cummins’ QSW series, which are designed for heavy-duty applications. The washer’s design accommodates the robust construction of these engines, providing the necessary friction and stability to maintain the integrity of bolted joints under high stress conditions.

QSW73 and QSZ90 Engines

Lastly, the Lock Washer 3336123 is compatible with the QSW73 and QSZ90 engines. These engines are also part of Cummins’ QSW series, known for their durability and performance in demanding environments. The washer’s material and design ensure it can withstand the operational stresses of these engines, providing a reliable locking mechanism that enhances the overall performance and longevity of the engine components.

Role of Part 3336123 Lock Washer in Engine Systems

In the context of engine systems, the part 3336123 Lock Washer is instrumental in ensuring the secure attachment and stability of various components. Its application is particularly significant in the assembly and mounting of water pumps and related systems.

Water Pump and Water Assembly Pump

When integrating the water pump into the engine system, the Lock Washer is positioned between the pump and its mounting surface. This placement prevents the pump from loosening due to vibrations, which are common in engine operations. The Lock Washer’s serrated edges dig into both the pump and the mounting surface, creating a frictional grip that maintains the pump’s alignment and operational efficiency.

Water Pump Mounting

In the water pump mounting process, the Lock Washer is essential for securing the pump to the engine block or its designated mounting point. This security is vital for the pump’s stable operation, as any movement can lead to misalignment, reduced efficiency, or even failure of the water pump. The Lock Washer ensures that the mounting bolts remain tight, thereby safeguarding the integrity of the water circulation system within the engine.

Water Gear Assembly Pump

For the water gear assembly pump, the Lock Washer plays a similar role. It is used in the attachment of the gear assembly to the pump housing. This ensures that the gears remain properly aligned and do not shift during operation, which is essential for the consistent and reliable circulation of coolant through the engine.

Water + Gear Assembly Pump

In more complex systems like the water + gear assembly pump, where both water pumping and gear mechanisms are integrated, the Lock Washer is used at multiple attachment points. This includes the connection between the gear assembly and the pump, as well as the pump’s attachment to the engine. The Lock Washer’s role here is to maintain the structural integrity and operational alignment of the entire assembly, ensuring efficient coolant flow and engine cooling.

Gilkes Water Assembly

Specifically, in the Gilkes water assembly, which is a type of water pump commonly used in various engine systems, the Lock Washer is employed to secure the pump components together. This is particularly important in high-stress environments where the pump is subjected to significant vibrations and thermal expansions. The Lock Washer helps in maintaining the pump’s structural integrity and operational stability.

Conclusion

In summary, the part 3336123 Lock Washer is a fundamental component in the secure and efficient operation of water pumps and related assemblies within engine systems. Its application across various attachment points ensures the stability and alignment of these critical components, contributing to the overall reliability and performance of the engine.