3899664
Plain Washer
Cummins®

The Cummins 3899664 Plain Washer is a component designed for use in commercial truck applications. It serves to maintain the integrity of truck components by ensuring the stability and efficiency of bolted joints. This washer is integral to the proper functioning of various truck systems, contributing to the overall reliability and performance of the vehicle ¹.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. They function primarily to distribute the load of a fastener, such as a bolt or nut, over a larger area, thereby preventing damage to the surfaces they are placed on. Additionally, plain washers can provide a degree of cushioning and help to reduce vibration, which can be particularly beneficial in the demanding environments of commercial trucks ².

Purpose of the 3899664 Plain Washer

The Cummins 3899664 Plain Washer plays a specific role in the operation of a truck. It is utilized in various truck systems and components where bolted joints are present. By ensuring that the load from fasteners is evenly distributed, this washer helps to maintain the structural integrity of the components it is used with. Its application spans across different truck systems, enhancing both performance and durability ³.

Key Features

The Cummins 3899664 Plain Washer is characterized by several key features that make it suitable for heavy-duty applications. These include its material composition, which is designed to withstand the rigors of commercial truck use, its precise dimensions that ensure compatibility with a wide range of fasteners, and its design, which is optimized for load distribution and vibration reduction ⁴.

Benefits of Using Plain Washers

Incorporating plain washers like the Cummins 3899664 into truck maintenance and assembly offers several advantages. These include improved load distribution, which helps to prevent damage to components, vibration reduction that contributes to a smoother operation, and enhanced corrosion resistance, which extends the lifespan of both the washer and the components it is used with ⁵.

Installation Guidelines

Proper installation of the Cummins 3899664 Plain Washer is crucial for ensuring optimal performance. It should be placed under the head of a bolt or nut and, where applicable, under the mating surface as well. Adherence to torque specifications is important to avoid over-tightening, which can lead to component damage, or under-tightening, which can result in loose fasteners ⁶.

Troubleshooting and Maintenance

Common issues associated with plain washers include deformation, corrosion, and wear. Regular inspection for signs of damage or degradation is recommended. If a washer shows signs of wear or if corrosion is present, replacement is advised to maintain the integrity of the bolted joint. Proper maintenance practices, such as keeping the washers clean and free from contaminants, can help prolong their lifespan ⁷.

Role in Truck Systems

The Cummins 3899664 Plain Washer interacts with various truck systems and components, playing a role in ensuring the stability and efficiency of bolted joints throughout the vehicle. Its presence in these systems contributes to the overall reliability and performance of the truck, highlighting the importance of this seemingly simple component in complex mechanical systems ⁸.

Historical Context and Evolution

The development of plain washers has seen technological advancements that have improved their durability, load-bearing capabilities, and resistance to environmental factors. The Cummins 3899664 Plain Washer is a product of this evolution, designed to meet the specific demands of commercial truck applications. Its design and material choices reflect the latest in washer technology, ensuring it can withstand the rigors of heavy-duty use ⁹.

Cummins: A Brief 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 history of innovation and a commitment to quality, Cummins serves customers in approximately 190 countries and territories, providing reliable and efficient power solutions for a variety of applications, including commercial trucks. The company’s product range and dedication to excellence make it a trusted name in the automotive industry ¹⁰.

Cummins Engine Part 3899664: Plain Washer Application

The Cummins part number 3899664, a Plain Washer, is a critical component used across several engine models. This washer is integral to the assembly and functionality of the engines, ensuring proper fitment and performance.

ISM CM570 and ISM CM570/870

The ISM CM570 and ISM CM570/870 engines benefit from the Plain Washer 3899664 in various applications. This washer is often used in the assembly of engine components, providing a smooth interface and preventing unwanted friction between parts. Its placement is crucial for maintaining the integrity of the engine’s structure and performance.

M11 CELECT and M11 CELECT PLUS

In the M11 CELECT and M11 CELECT PLUS engines, the Plain Washer 3899664 plays a similar role. These engines, known for their advanced technology and efficiency, rely on precise components like this washer to ensure optimal operation. The washer’s design allows for easy installation and removal, facilitating maintenance and repairs.

M11 MECHANICAL

For the M11 MECHANICAL engine, the Plain Washer 3899664 is essential in maintaining the mechanical integrity of the engine. This engine, with its robust design, uses the washer in several key areas to ensure that components are properly aligned and secured.

QSM11 CM570

The QSM11 CM570 engine also incorporates the Plain Washer 3899664 in its assembly. This washer is used to ensure that parts fit together seamlessly, reducing the risk of wear and tear and enhancing the engine’s overall performance.

Each of these engines, while distinct in their design and application, shares a common need for the Plain Washer 3899664. This part’s role in the assembly and maintenance of these engines underscores its importance in ensuring reliable and efficient operation.

Role of Part 3899664 Plain Washer in Engine Systems

In engine systems, the part 3899664 plain washer is instrumental in ensuring the smooth operation of various components. One of its primary applications is within the flywheel assembly.

Flywheel Assembly

Within the flywheel, the plain washer serves as a spacer between the flywheel and the pressure plate. This spacing is essential for maintaining the correct alignment and clearance, which ensures that the clutch engages and disengages smoothly. The washer helps distribute the load evenly, reducing the risk of uneven wear on the flywheel surface. Additionally, it plays a role in dampening vibrations that occur during engine operation, contributing to a more stable and efficient power transfer from the engine to the transmission.

The integration of the plain washer in the flywheel assembly underscores its importance in maintaining the precision and reliability of the engine’s clutch system.

Conclusion

The Cummins 3899664 Plain Washer is a critical component in the maintenance and operation of commercial trucks and engines. Its role in distributing load, reducing vibration, and ensuring the integrity of bolted joints highlights its importance in the automotive industry. Proper installation, regular maintenance, and understanding its application across various engine models are key to maximizing its benefits and ensuring the reliability and performance of the vehicles it serves.