3696821
Lock Washer
Cummins®

The 3696821 Lock Washer, a component manufactured by Cummins, is designed for use in commercial trucks. This part plays a role in ensuring the reliability and safety of various mechanical assemblies in these vehicles.

Basic Concepts of Lock Washers

Lock washers are mechanical devices used with bolts and nuts to prevent loosening of fasteners. They function by creating additional friction or by deforming slightly to grip the surfaces they are placed between, maintaining the integrity of bolted connections, especially in applications subject to vibration or dynamic loads ¹.

Purpose of the 3696821 Lock Washer

The 3696821 Lock Washer is designed to enhance the stability and integrity of bolted connections in commercial trucks. It ensures that fasteners remain secure under dynamic conditions, contributing to the overall safety and performance of the vehicle ².

Key Features

This Cummins part features a split design, which allows it to spring open when tightened, creating a locking mechanism that resists vibration and movement. It is made from high-quality materials that offer durability and resistance to corrosion, making it suitable for heavy-duty applications. The design and material composition of this lock washer are tailored to withstand the rigors of commercial truck use ³.

Benefits

Using the 3696821 Lock Washer provides several advantages. It offers improved fastening security by preventing fasteners from loosening due to vibration. Its design ensures longevity even in harsh operating environments, reducing the need for frequent replacements. Additionally, it contributes to the overall reliability of the truck’s mechanical assemblies ⁴.

Installation Guidelines

To ensure optimal performance and longevity, 3696821 should be installed correctly. This involves placing it under the nut or bolt head, ensuring the split portion of the washer is oriented correctly to engage with the surfaces. Following torque specifications provided by the manufacturer is crucial to achieve the desired locking effect without over-tightening.

Troubleshooting and Maintenance

Common issues with lock washers include deformation or failure to engage properly, which can lead to fastening insecurity. Regular inspection for signs of wear or damage is recommended to maintain the integrity of bolted connections. Replacement should be carried out according to manufacturer guidelines to ensure continued reliability.

Applications in Commercial Trucks

The 3696821 Lock Washer is used in various assemblies within commercial trucks, including engine components, chassis parts, and body attachments. Its application is critical in areas where vibrations or dynamic loads are present. Using manufacturer-recommended parts like this lock washer is important for maintaining the reliability and safety of the vehicle.

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 worldwide. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications.

Lock Washer 3696821 in Cummins Engines

The Lock Washer 3696821, manufactured by Cummins, is a component used in various Cummins engine models. This part is designed to secure and stabilize components by preventing loosening due to vibration or movement.

Engines with 15N CM2380 M104B

The 15N CM2380 M104B engine utilizes the Lock Washer 3696821 to ensure the integrity of connections in high-stress areas. This washer is typically employed in securing bolts that need to maintain their position under operational conditions.

Engines with ISG11 CM2880 G108 and QSG12 CM2880 G112

In the ISG11 CM2880 G108 and QSG12 CM2880 G112 engines, the Lock Washer 3696821 is used to secure various fasteners, ensuring that components remain tightly fastened. This is particularly important in maintaining the alignment and stability of moving parts within these engines.

Engines with ISG12 CM2880 G107 and ISG12 G CMOH6.0 G111

For the ISG12 CM2880 G107 and ISG12 G CMOH6.0 G111 engines, the Lock Washer 3696821 plays a role in securing bolts that are subject to significant vibration and movement. This ensures that the components remain securely fastened, preventing any potential loosening that could lead to engine failure.

Engines with QSG12/X12 CM2350 G110

In the QSG12/X12 CM2350 G110 engine, the Lock Washer 3696821 is used to maintain the integrity of connections in areas where bolts are exposed to high stress and vibration. This washer helps to keep the bolts in place, ensuring the engine operates smoothly and efficiently.

Engines with X11 CM2670 X126B, X12 CM2350 X119B, and X12 CM2670 X121B

The X11 CM2670 X126B, X12 CM2350 X119B, and X12 CM2670 X121B engines all utilize the Lock Washer 3696821 to secure various components. This washer is essential in maintaining the stability of bolts in high-vibration areas, ensuring that the engine components remain securely fastened.

Engines with X12N CMMDG1 X143B and X13 CM2670 X122B

In the X12N CMMDG1 X143B and X13 CM2670 X122B engines, the Lock Washer 3696821 is used to secure bolts that are critical for the engine’s operation. This washer helps to prevent loosening due to vibration, ensuring that the engine components remain tightly fastened.

Engine with Z14 CM2670 Z103B

The Z14 CM2670 Z103B engine also employs the Lock Washer 3696821 to secure various components. This washer is essential in maintaining the stability of bolts in high-stress areas, ensuring that the engine operates smoothly and efficiently.

Role of Part 3696821 Lock Washer in Engine Systems

In the intricate assembly of engine systems, the 3696821 Lock Washer serves a function in ensuring the stability and integrity of various components. Specifically, within the arrangement of the turbocharger, this lock washer plays a role.

Turbocharger Arrangement

Within the turbocharger setup, the 3696821 Lock Washer is employed to secure the fastening of critical components. It is positioned between the bolt head or nut and the surface of the component it is securing, such as the turbocharger housing or the compressor wheel. This placement ensures that the fastener does not loosen over time due to vibrations or thermal expansion, which are common in high-performance engine environments.

The lock washer achieves this by exerting a spring-like action that maintains tension on the fastener. As the engine operates, the turbocharger experiences significant forces and movements. The lock washer’s design helps to counteract these forces, preventing the fastener from becoming loose. This, in turn, ensures that the turbocharger components remain properly aligned and secured, contributing to the overall efficiency and reliability of the engine system.

Conclusion

In summary, the 3696821 Lock Washer is a component in the turbocharger arrangement, providing the necessary security and stability to withstand the demanding conditions of engine operation.