3910260
O Ring Seal
Cummins®

The Cummins 3910260 O Ring Seal is a component designed for use in heavy-duty truck maintenance and operation. Its role is to ensure the integrity of seals within various systems of the truck, contributing to the overall efficiency and reliability of the vehicle.

Basic Concepts of O Ring Seals

An O Ring Seal is a type of gasket consisting of a jointless ring of elastomeric material used for creating seals in various mechanical systems. It operates by being compressed between two or more mating surfaces, thereby preventing the passage of fluids or gases. O Ring Seals are widely utilized due to their simplicity, effectiveness, and versatility in sealing applications ¹.

Purpose of the Cummins 3910260 O Ring Seal

This Cummins part is specifically designed to play a role in the sealing mechanisms of heavy-duty trucks. It is associated with various systems or components within the truck, ensuring that fluids and gases remain contained within their designated pathways. This helps maintain the operational integrity and efficiency of the truck’s systems ².

Key Features

The Cummins 3910260 O Ring Seal is characterized by its material composition, typically made from durable elastomers that can withstand the harsh conditions encountered in heavy-duty applications. Its design is tailored to fit specific dimensions and tolerances, ensuring a precise fit and effective seal. Additionally, it may possess unique attributes that enhance its performance and durability in demanding environments ³.

Benefits

Utilizing the Cummins 3910260 O Ring Seal offers several benefits, including improved system efficiency, longevity, and reliability. By providing a reliable seal, it helps prevent leaks and maintain the integrity of the truck’s systems, ultimately contributing to safer and more efficient operation ⁴.

Installation Considerations

Proper installation of this Cummins part is crucial to ensure optimal performance and longevity. Guidelines and best practices should be followed to achieve a secure and effective seal. This may include ensuring the mating surfaces are clean and free of debris, using the appropriate lubrication during installation, and verifying the correct orientation and seating of the O Ring Seal ⁵.

Troubleshooting Common Issues

Common problems associated with O Ring Seals, such as leaks or failures, can often be traced back to installation issues or environmental factors. Troubleshooting steps may involve inspecting the seal for signs of damage or wear, checking for proper seating and compression, and addressing any underlying issues that may be contributing to the problem ⁶.

Maintenance Tips

Regular maintenance of the Cummins 3910260 O Ring Seal is important to ensure continued performance and reliability. This may include periodic inspection for signs of wear or damage, cleaning the seal and mating surfaces as needed, and replacing the seal according to manufacturer recommendations or when signs of degradation are observed ⁷.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and related components. With a reputation for quality, reliability, and innovation, Cummins serves customers in various industries, including automotive, heavy-duty trucking, and industrial applications. The company’s commitment to excellence and customer satisfaction has earned it a prominent position in the industry.

Cummins Engine Part 3910260 O Ring Seal Compatibility

This O Ring Seal is designed to fit a variety of Cummins engines, ensuring a secure seal in critical areas. Below is a detailed breakdown of the engines that this O Ring Seal is compatible with:

Engine Families with 15N and M104B Series

• 15N CM2380 M104B
• B3.9 G
• B4.5
• B4.5 CM2350 B129B
• B4.5 RGT
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• C GAS PLUS CM556
• C8.3 G
• D4.0 CM2620 D103B
• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

Engine Families with 4B3.9 and 6B5.9 Series

• 4B3.9
• 6B5.9
• 6C8.3

This part is engineered to meet the specific requirements of these engines, ensuring a perfect fit and reliable performance across the board.

Role of Part 3910260 O Ring Seal in Engine Systems

The O Ring Seal, part number 3910260, is integral to ensuring the efficiency and reliability of various engine components. Its application spans across multiple systems, providing essential sealing functions that prevent leaks and maintain system integrity.

Cylinder Block Cover and Valve Cover Arrangement

In the cylinder block cover and valve cover arrangement, the O Ring Seal is employed to create a tight seal between mating surfaces. This prevents oil and other fluids from escaping, which is vital for maintaining proper lubrication and preventing contamination.

Engine Installation Kit and Overhaul Kit

Within the engine installation kit and overhaul kit, the O Ring Seal is used in conjunction with gaskets and seals to ensure that all connections are leak-free. This is particularly important during the installation or overhaul process, where precise sealing is required to avoid fluid loss and ensure optimal engine performance.

Exhaust Cooler Water Inlet and Outlet Tubes

For the exhaust cooler water inlet and outlet tubes, the O Ring Seal plays a key role in sealing the connections to the exhaust cooler. This ensures that coolant flows efficiently through the system without any leaks, which is essential for effective cooling and maintaining engine temperature within safe limits.

Exhaust Recirculation System

In the exhaust recirculation (EGR) system, the O Ring Seal is used to seal connections between various components, such as the EGR valve and the intake manifold. This helps in maintaining the integrity of the recirculated exhaust gases, ensuring they are properly mixed with the intake air without any leaks.

Flywheel Housing and Related Components

The flywheel housing, along with its kit and mounting components, relies on the O Ring Seal to ensure that any fluid passages within these parts are sealed correctly. This is important for maintaining the hydraulic systems that may be integrated within the flywheel housing, such as those found in vacuum/hydraulic systems.

Hydraulic Pump and Vacuum Pump

For the hydraulic pump and vacuum pump, the O Ring Seal is utilized to seal fluid passages and connections. This ensures that the pumps operate efficiently without any fluid loss, which is essential for the proper functioning of these systems.

Radiator Mounting and Seal Kit

In the context of radiator mounting and the seal kit, the O Ring Seal is used to ensure that connections between the radiator and its mounting brackets are sealed. This prevents coolant leaks and ensures that the radiator can effectively dissipate heat from the engine.

Lower and Upper Engine Gasket Kits

Both the lower and upper engine gasket kits incorporate the O Ring Seal to provide additional sealing where standard gaskets may not suffice. This is particularly important in areas where dynamic movement or high pressure is present, ensuring that all engine compartments remain sealed.

PDC and Upfit Part

For the Powertrain Control Module (PDC) and upfit parts, the O Ring Seal may be used in fluid passages or connections related to these components. This ensures that any fluids involved in these systems are contained properly, maintaining the efficiency and reliability of the powertrain.

Housing and Flywheel

In housing components, especially those related to the flywheel, the O Ring Seal is used to ensure that any fluid passages within these housings are sealed. This is crucial for maintaining the integrity of hydraulic systems that may interact with the flywheel.

Conclusion

The Cummins 3910260 O Ring Seal plays a versatile and essential role across various engine systems, ensuring that fluid passages and connections remain sealed, which is fundamental to the efficient and reliable operation of the engine.