5267662
Compression Piston Ring
Cummins®

The Cummins 5267662 Compression Piston Ring is a component designed for use in heavy-duty truck engines. It plays a role in the engine cooling system by ensuring proper sealing of the combustion chamber. This component is integral to the operation of the engine, contributing to its overall effectiveness and longevity ¹.

Basic Concepts of Compression Piston Rings

Compression piston rings are components found in internal combustion engines. Their primary function is to seal the combustion chamber, maintaining compression and ensuring efficient fuel combustion. These rings are typically made from materials such as cast iron or steel, chosen for their durability and ability to withstand high temperatures and pressures. The fit and finish of these rings are crucial, as they must create an effective seal without excessive friction, which could lead to wear and reduced efficiency ².

Purpose of the Cummins 5267662 Compression Piston Ring

This Cummins part is specifically designed to enhance the operation of truck engines. It aids in sealing the combustion chamber, which is vital for maintaining compression and ensuring that fuel combustion is as efficient as possible. This component helps in reducing the amount of blow-by, which is the leakage of combustion gases past the piston rings, thereby contributing to the engine’s performance and efficiency ³.

Key Features

This part is distinguished by its design and construction features that enhance performance and durability. It is made from high-quality materials and may incorporate advanced coating technologies to reduce friction and wear. Unique design elements, such as specific cross-sectional profiles, contribute to its effectiveness in sealing the combustion chamber and withstanding the rigors of heavy-duty engine operation.

Benefits

Using this part in heavy-duty truck engines offers several advantages. These include improved engine efficiency through better sealing of the combustion chamber, reduced oil consumption due to effective control of blow-by, enhanced durability under high-stress conditions, and a contribution to the overall longevity of the engine. These benefits make it a valuable component for maintaining engine performance over time.

Installation Considerations

Proper installation of this part is crucial for ensuring its effectiveness and the engine’s performance. Guidelines for installation include using the correct tools, handling the ring with care to avoid damage, and following steps to ensure a secure and proper fit within the engine. Attention to detail during installation can prevent issues and ensure the ring functions as intended.

Troubleshooting and Maintenance

Common issues with compression piston rings can include wear, damage, or improper seating, leading to reduced engine performance. Regular inspection and maintenance of this part are important for identifying potential problems early and ensuring optimal performance. Tips for maintenance include checking for signs of wear or damage during routine engine inspections and considering replacement based on the manufacturer’s recommendations or observed condition.

Performance Impact

This part affects engine performance, fuel efficiency, and emissions. Its role in sealing the combustion chamber contributes to more efficient fuel combustion and reduced emissions. Feedback from fleet operators and mechanics highlights its effectiveness in maintaining engine performance under demanding conditions, demonstrating its value in real-world applications.

Cummins Overview

Cummins Inc. is a leader in the heavy-duty truck industry, known for its commitment to innovation, quality, and customer satisfaction. The company has a long history of designing and manufacturing engine components that meet the rigorous demands of heavy-duty applications. Cummins’ reputation is built on its dedication to producing reliable, high-performance parts that contribute to the efficiency and durability of engines.

Compatibility of Compression Piston Ring Part 5267662 with Cummins Engines

The Compression Piston Ring part number 5267662, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral for maintaining the engine’s performance and efficiency by ensuring a proper seal between the piston and the cylinder wall.

Engines Compatible with Part 5267662

• 6C8.3
• ISC CM850
• ISC8.3 CM2250
• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250
• L8.9
• L8.9 L121
• L9 CM2670 L128B
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

Grouping of Compatible Engines

Group 1: ISC Series

• ISC CM850
• ISC8.3 CM2250
• QSC8.3 CM850 (CM2850)

Group 2: ISL Series

• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250
• QSC9 CM2250 / QSL9 CM2250

Group 3: L Series

• L8.9
• L8.9 L121
• L9 CM2670 L128B
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

This part is engineered to provide optimal performance and durability across these engine models, ensuring that the seal between the piston and cylinder wall is maintained, which is crucial for engine efficiency and longevity.

Role of Part 5267662 Compression Piston Ring in Engine Systems

The 5267662 Compression Piston Ring is an integral component in the efficient operation of various engine systems. Its primary function is to create a seal between the piston and the cylinder wall, ensuring that the combustion gases remain within the combustion chamber. This seal is vital for maintaining compression and maximizing engine performance.

When the camshaft opens the intake valve, the fuel manifold and injector work in tandem to deliver a precise mixture of air and fuel into the cylinder. As the piston moves downward on the intake stroke, the compression piston ring follows, scraping excess lubricant from the cylinder walls to prevent dilution of the air-fuel mixture.

During the compression stroke, the connecting rod transmits the piston’s upward motion, compressing the air-fuel mixture. The compression piston ring plays a significant role here by ensuring that the compressed mixture does not escape past the piston, thus maintaining the necessary pressure for efficient combustion.

Upon ignition, the explosion of the compressed air-fuel mixture drives the piston downward on the power stroke. The compression piston ring continues to seal the combustion chamber, directing the force of the explosion through the connecting rod to the crankshaft, converting linear motion into rotational energy.

In the context of an overhaul kit or piston engine kit, the inclusion of high-quality compression piston rings like Part 5267662 is essential. These rings contribute to the overall performance and longevity of the engine by reducing oil consumption, minimizing blow-by, and enhancing thermal efficiency.

For engines utilizing a piston ring kit or piston ring set, the compression piston ring is often paired with oil control rings to manage lubrication effectively. This combination ensures that the cylinder walls are adequately lubricated without excessive oil entering the combustion chamber, which could lead to fouling and reduced performance.

In summary, the 5267662 Compression Piston Ring is a fundamental component in the interplay between the cylinder block, cylinder head, and engine piston. Its role in sealing the combustion chamber directly influences engine efficiency, performance, and durability.

Conclusion

The Cummins 5267662 Compression Piston Ring is a critical component for maintaining the efficiency and performance of heavy-duty truck engines. Its design and features contribute to sealing the combustion chamber, reducing oil consumption, and enhancing engine durability. Proper installation, regular maintenance, and understanding its role in engine systems are essential for maximizing the benefits of this part.