3400817
Retaining Ring
Cummins®

The Cummins 3400817 Retaining Ring is a specialized component designed for use in commercial trucks. Its primary purpose is to secure various parts within the engine and transmission systems, ensuring they remain in place under operational conditions. This retaining ring is integral to maintaining the structural integrity and efficiency of the truck’s mechanical systems.

Basic Concepts of Retaining Rings

Retaining rings, also known as circlips, are mechanical fasteners used to prevent components from moving along a shaft or within a housing. They operate by exerting a constant radial pressure against the inner diameter of a bore or the outer diameter of a shaft, thereby securing parts in place. Retaining rings are widely used in various mechanical systems due to their simplicity, reliability, and ease of installation ¹.

Purpose of the 3400817 Retaining Ring

The Cummins 3400817 Retaining Ring plays a specific role in the operation of commercial trucks by securing components within the engine and transmission systems. It ensures that parts such as gears, bearings, and other critical elements remain fixed in their designated positions, which is vital for the smooth and efficient operation of the truck. By preventing movement and misalignment, this retaining ring contributes to the overall reliability and performance of the vehicle ².

Key Features

The Cummins 3400817 Retaining Ring is characterized by several key features that enhance its performance. It is typically made from high-strength steel, which provides durability and resistance to wear. The design of the ring includes a coiled shape that allows it to be easily installed and removed while maintaining a strong grip on the components it secures. Additionally, the ring is precision-engineered to ensure a perfect fit within the specified bore or shaft diameter.

Benefits

The advantages provided by the Cummins 3400817 Retaining Ring include improved reliability, durability, and efficiency in truck operations. By securely holding components in place, it reduces the risk of mechanical failure and extends the lifespan of the engine and transmission systems. The ring’s robust construction ensures it can withstand the high stresses and vibrations encountered in commercial truck applications, contributing to overall vehicle performance ³.

Installation Process

Proper installation of the Cummins 3400817 Retaining Ring involves several steps to ensure correct fitting. First, the bore or shaft where the ring will be installed should be clean and free of debris. Using appropriate tools, such as retaining ring pliers, the ring is expanded and placed into the bore or over the shaft. Once in position, the ring should be released to allow it to contract and secure the component. It is important to verify that the ring is seated correctly and exerts uniform pressure around the component.

Common Issues and Troubleshooting

Typical problems associated with retaining rings include improper installation, which can lead to insufficient securing of components, and wear or damage to the ring over time. To diagnose issues, inspect the ring for signs of deformation or corrosion. If the ring appears damaged or if components are not securely held in place, replacement may be necessary. Ensuring correct installation and regular inspection can help prevent common malfunctions.

Maintenance Tips

Regular maintenance of the Cummins 3400817 Retaining Ring is important to ensure longevity and optimal performance. Inspection intervals should be established based on the truck’s operational conditions and usage. During inspections, check the ring for signs of wear, corrosion, or damage. Cleaning the ring and the surrounding components can prevent buildup that may affect its function. If any issues are detected, the ring should be replaced to maintain the integrity of the engine and transmission systems.

Role in Engine and Transmission Systems

The Cummins 3400817 Retaining Ring interacts with other components within the engine and transmission systems by securing parts such as gears, bearings, and shafts. Its role in maintaining the proper alignment and positioning of these components contributes to the overall system integrity. By ensuring that parts remain fixed, the retaining ring helps to prevent mechanical failures and enhances the efficiency and reliability of the truck’s operation ⁴.

Manufacturer Information - Cummins

Cummins is a renowned manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. With a strong reputation for producing reliable and high-performance components, Cummins continues to lead the way in developing advanced solutions for commercial vehicles. Their dedication to excellence is reflected in the design and manufacturing of components like the 3400817 Retaining Ring, ensuring that truck operators can rely on their equipment for durable and efficient performance.

Cummins Engine Compatibility with Part 3400817

The Cummins part 3400817, a Retaining Ring, is designed to fit a variety of Cummins engines, ensuring proper assembly and function. Here is a breakdown of the engines with which this part is compatible:

ISB Series

• ISB CM2150
• ISB CM550
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB5.9G CM2180
• ISL9 CM2150 SN

ISBE Series

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

ISF Series

• ISF3.8 CM2220 AN

ISM Series

• ISM CM570

QSB Series

• QSB3.9 30 CM550

Other Models

• 4B3.9
• 6B5.9
• 6C8.3
• B5.6 CM2670 B152B
• B5.9 GAS PLUS CM556
• B6.7 CM2670 B153B
• B6.7 G CMOH6.0 B125
• L8.9G CMOH2.0 L125B
• M11 CELECT PLUS
• ISD4.5 CM2220 D108

This retaining ring is a critical component in ensuring the longevity and reliability of the engines it is used in. It plays a vital role in maintaining the integrity of the engine’s assembly by keeping parts in place and preventing wear and tear.

Role of Part 3400817 Retaining Ring in Engine Systems

The Part 3400817 Retaining Ring is an essential component in various engine systems, ensuring the secure and efficient operation of multiple parts.

In the arrangement of engine components, the retaining ring plays a significant role in maintaining the precise positioning of parts, which is vital for the overall performance and reliability of the engine.

Within the compressor coolant system, the retaining ring helps to secure fittings and connections, preventing leaks and ensuring that the coolant flows efficiently through the system. This is particularly important in high-performance engines where temperature management is key.

The camshaft and camshaft and gear assemblies also benefit from the use of retaining rings. These rings ensure that the camshaft remains properly aligned with the gear, reducing wear and tear and enhancing the longevity of the engine.

In the connecting rod and piston arrangement, retaining rings are used to secure components, ensuring that the piston moves smoothly within the cylinder without excessive play. This contributes to the engine’s overall performance and durability.

The cylinder head is another area where retaining rings are vital. They help to secure gaskets and other components, ensuring a proper seal and preventing coolant or oil leaks, which can significantly impact engine performance.

In the elbow hose coupling and various plumbing systems, such as the fuel supply plumbing and marine gear oil cooler plumbing, retaining rings are used to secure connections and fittings. This ensures that fluids flow smoothly and without interruption, which is essential for the engine’s operation.

The male adapter elbow and male connector within the fuel system also rely on retaining rings to maintain secure connections. This is important for preventing fuel leaks and ensuring that the fuel supply remains consistent.

Overall, the Part 3400817 Retaining Ring is a fundamental component in ensuring the secure and efficient operation of various engine systems, contributing to the engine’s performance, reliability, and longevity.

Conclusion

The Cummins 3400817 Retaining Ring is a critical component in the maintenance and operation of commercial truck engines and transmission systems. Its role in securing various parts ensures the structural integrity and efficiency of the truck’s mechanical systems. Proper installation, regular maintenance, and understanding its role within engine systems are essential for maximizing the performance and reliability of commercial vehicles.