3087740
O Ring Seal
Cummins®

Introduction

The Cummins 3087740 O Ring Seal is a component designed for use in commercial trucks. Its purpose is to provide a reliable seal in various applications within the truck’s systems, ensuring the integrity of fluid and gas pathways. This seal is integral to maintaining the efficiency and performance of the truck’s engine and other mechanical systems.

Basic Concepts of O Ring Seals

O Ring Seals are circular rings, typically made from elastomers, that create a seal when compressed within a groove. They function by blocking the passage of fluids or gases between two surfaces, preventing leaks and ensuring system efficiency. O Ring Seals are widely used in mechanical systems due to their simplicity, effectiveness, and versatility in various applications ¹.

Role of the 3087740 O Ring Seal in Truck Operation

The Cummins 3087740 O Ring Seal plays a specific role in the operation of a truck by ensuring the sealing of connections in the engine and other systems. It is placed in grooves where two surfaces meet, such as in fuel injectors or hydraulic systems. The seal’s function is to maintain pressure and prevent leaks, which is vital for the proper operation and longevity of the truck’s components.

Key Features

The Cummins 3087740 O Ring Seal is characterized by its material composition, typically a durable elastomer that can withstand high temperatures and pressures. Its design specifications include precise dimensions to ensure a snug fit within the designated grooves. Unique attributes of this seal may include resistance to specific chemicals or enhanced flexibility, which contribute to its performance in demanding environments.

Benefits

The Cummins 3087740 O Ring Seal offers several benefits, including improved sealing efficiency, which helps maintain system pressure and prevent leaks. Its durability ensures long-term performance, reducing the need for frequent replacements. Additionally, the seal contributes to the overall reliability of the truck’s systems by ensuring that connections remain secure under various operating conditions.

Troubleshooting and Maintenance

Common issues with O Ring Seals include wear, deformation, or failure due to exposure to extreme conditions. Troubleshooting these problems involves inspecting the seal for signs of damage and ensuring that it is properly seated within the groove. Maintenance practices for the Cummins 3087740 O Ring Seal include regular checks for wear and tear, proper installation to avoid damage, and replacement when signs of degradation are observed to ensure continued system integrity ².

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry for producing reliable and efficient components that contribute to the performance and longevity of vehicles.

Compatibility with Cummins Engines

The O Ring Seal part number 3087740, manufactured by Cummins, is designed to ensure the integrity of various engine systems. This seal is engineered to fit seamlessly with several Cummins engine models, providing essential sealing properties to prevent leaks and maintain system pressure.

ISB CM850 and QSB5.9 CM850

The ISB CM850 and QSB5.9 CM850 engines both benefit from the 3087740 O Ring Seal. This seal is crucial in maintaining the efficiency and reliability of these engines by ensuring that critical components remain sealed and protected from contaminants.

N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL

The N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines are equipped with the 3087740 O Ring Seal to provide a dependable seal in various applications. This seal is particularly important in maintaining the performance and longevity of these engines, ensuring that they operate smoothly under different conditions.

NH/NT 855

The NH/NT 855 engine also utilizes the 3087740 O Ring Seal. This seal is essential in maintaining the operational integrity of the engine, providing a reliable barrier against leaks and ensuring that the engine components function as intended.

QSN14 CM876 N103

The QSN14 CM876 N103 engine incorporates the 3087740 O Ring Seal to ensure that the engine’s various systems remain sealed and protected. This seal is vital in maintaining the engine’s performance and reliability, ensuring that it operates efficiently and effectively.

Role of Part 3087740 O Ring Seal in Engine Systems

The part 3087740 O Ring Seal is instrumental in maintaining the integrity and efficiency of various engine systems. Its application spans across multiple components, ensuring optimal performance and longevity.

Integration with Engine Components

• Base Parts and Short Blocks: The O Ring Seal is utilized in base parts and short blocks to prevent leaks between mating surfaces. This is particularly important in the Block Short Kit and Cylinder Short Block where precise sealing is required to maintain compression and prevent coolant or oil leaks.

• NTC-350 and NTC-400 Cylinder Blocks: In the Cyl Short NTC-350 and Cyl Short NTC-400, the O Ring Seal ensures that the cylinder block interfaces correctly with other components, such as the Cylinder Head and Upper Engine Gasket Set, thereby maintaining the engine’s overall sealing efficiency.

• Camshaft and Connecting Rod and Piston Assemblies: The seal is also employed in the Camshaft and Connecting Rod and Piston assemblies to ensure that lubricants remain contained, reducing friction and wear on moving parts.

• Cylinder Head and EBM-Head: When installed in the Cylinder Head or EBM-Head, the O Ring Seal helps in maintaining the integrity of the combustion chamber, ensuring that gases do not escape and that coolant pathways remain sealed.

• Fuel System Components: In the Fuel Connection and Fuel Crossover, the seal prevents fuel leaks, which is essential for maintaining fuel efficiency and safety.

• HVT Injector Lub Oil Supply and Injectors: The O Ring Seal is critical in the HVT Inj. Lub Oil Supply and Injector systems to ensure that oil and fuel pathways are sealed, preventing contamination and ensuring consistent fuel delivery.

• Main Bearing Shell and Service Kit: Within the Main Bearing Shell and comprehensive Service Kit, the seal plays a role in maintaining the lubrication system’s integrity, which is vital for the longevity of the crankshaft and other rotating components.

• Short Assembly Block and Short Block Kit: In the Short Assembly Block and Short Block Kit, the O Ring Seal ensures that all interfaces are properly sealed, contributing to the engine’s overall reliability.

• Turbocharger and Valve Cover: The seal is also found in the Turbocharger and Valve Cover, where it helps maintain the pressure integrity of the turbo system and prevents oil leaks from the valvetrain area.

The consistent application of the part 3087740 O Ring Seal across these components underscores its importance in ensuring the engine operates efficiently and reliably.

Conclusion

The Cummins 3087740 O Ring Seal is a critical component in the maintenance and operation of commercial truck engines. Its role in preventing leaks, maintaining system pressure, and ensuring the integrity of various engine systems cannot be overstated. Regular maintenance and proper installation of this seal are essential for the longevity and efficiency of the engine. Cummins’ commitment to quality and innovation is evident in the design and functionality of this part, making it a reliable choice for ensuring the performance and reliability of commercial truck engines ³.