3679139
O Ring Seal
Cummins®

Introduction

The Cummins 3679139 O Ring Seal is a critical component for commercial trucks, manufactured by Cummins, a renowned name in the automotive and heavy-duty truck industry. This part is essential for maintaining the efficiency and reliability of truck systems.

Basic Concepts of O Ring Seals

An O Ring Seal is a type of gasket that creates a seal by being compressed within a groove. It functions by filling the gap between two or more parts, preventing the leakage of fluids or gases. O Rings are typically made from elastomers, which provide flexibility and resilience. The principle of sealing in fluid systems relies on the O Ring’s ability to deform under compression, creating a tight seal that can withstand pressure and temperature variations ¹.

Role of the 3679139 O Ring Seal in Truck Operation

The 3679139 O Ring Seal ensures the integrity of seals in various systems and components, commonly used in fuel systems, hydraulic systems, and engine components where fluid or gas containment is necessary. By maintaining these seals, the O Ring contributes to the overall efficiency and safety of the truck’s operation ².

Key Features

This Cummins part is characterized by its robust design and material properties. It is crafted from high-quality elastomers that offer excellent resistance to wear, chemical exposure, and temperature fluctuations. The seal’s design ensures a snug fit within its designated groove, providing a reliable barrier against leaks. Additionally, its material properties allow it to maintain flexibility and sealing capability under a range of operating conditions ³.

Benefits

The use of the 3679139 O Ring Seal offers several benefits. It provides improved sealing efficiency, which is crucial for maintaining system integrity and performance. The seal’s durability ensures long-term reliability, reducing the need for frequent replacements. Furthermore, its resistance to various operating conditions, including exposure to chemicals and extreme temperatures, enhances its performance and longevity.

Troubleshooting and Maintenance

Common issues with O Ring Seals include wear, deformation, and failure due to exposure to incompatible fluids or excessive temperatures. Troubleshooting seal failures involves inspecting the seal for signs of damage, ensuring proper installation, and verifying compatibility with the system’s fluids and operating conditions. Regular maintenance practices, such as checking for wear and replacing seals as needed, are vital for ensuring the longevity and optimal performance of the O Ring Seal.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial and industrial applications.

Cummins Engine Part 3679139 O Ring Seal Compatibility

The Cummins part number 3679139, an O Ring Seal, is designed to fit a variety of Cummins engines. This seal is crucial for maintaining the integrity of the engine’s sealing systems, ensuring that there are no leaks and that the engine operates efficiently.

Compatible Engines

• 15N CM2380 M104B
• 4B3.9
• 6B5.9
• 6C8.3
• B4.5 CM2350 B129B
• B4.5 RGT
• B5.6 CM2670 B152B
• 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
• B6.7S
• 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

This O Ring Seal is engineered to fit seamlessly into the specified engines, providing a reliable seal that is essential for the engine’s performance and longevity. It is important to ensure that the correct size and type of O Ring Seal is used for each engine to maintain optimal sealing and prevent any potential issues.

Role of Part 3679139 O Ring Seal in Engine Systems

The Part 3679139 O Ring Seal is instrumental in ensuring the integrity and efficiency of various engine systems. Its application spans across multiple components, each playing a distinct role in the overall functionality of the engine.

Accessory Drive

In the accessory drive system, the O ring seal prevents lubricant leakage, ensuring that the drive components remain well-lubricated and operate smoothly.

Aftertreatment Arrangement

Within the aftertreatment arrangement, the O ring seal is used to maintain the seal between various components, ensuring that exhaust gases are effectively treated before being released.

Air Cleaner Assembly

The O ring seal in the air cleaner assembly helps to create a tight seal, preventing unfiltered air from entering the engine and ensuring optimal air-fuel mixture.

Auxiliary Cooling Plumbing

In the auxiliary cooling plumbing, the O ring seal is vital for maintaining the integrity of the coolant flow, preventing leaks that could lead to overheating.

Control Operating Engine

For the control operating engine, the O ring seal ensures that hydraulic fluids are contained within their pathways, allowing for precise control operations.

Drain Location

At the drain location, the O ring seal prevents coolant or oil from leaking out, ensuring that the drainage process is clean and efficient.

Engine Coolant Plumbing

In the engine coolant plumbing, the O ring seal is essential for maintaining the coolant’s pathway, preventing leaks that could lead to engine overheating.

Engine Monitoring System

The O ring seal in the engine monitoring system components ensures that sensors and gauges remain accurately calibrated by preventing fluid contamination.

Exhaust Recirculation

Within the exhaust recirculation system, the O ring seal helps to maintain the seal around recirculated exhaust gases, enhancing emission control.

Filter Shell and Gas Mixers

In filter shells and gas mixers, the O ring seal ensures that the mixing process is efficient and that there are no leaks in the system.

Front Gear Housing

The O ring seal in the front gear housing prevents lubricant leakage, ensuring that gears operate smoothly and efficiently.

Gas Pipes Assembly

In the gas pipes assembly, the O ring seal ensures that gas flow is uninterrupted and that there are no leaks in the system.

Hardware Certification Kit

Within the hardware certification kit, the O ring seal is used to ensure that all certified components are properly sealed, maintaining their integrity and performance.

Heat Exchanger/Water Cooler Turbocharger

In the heat exchanger and water cooler turbocharger, the O ring seal prevents coolant leaks, ensuring efficient heat exchange and turbocharger performance.

Injector Leak Test Kit

The O ring seal in the injector leak test kit ensures that the test environment is sealed, providing accurate leak detection results.

Kit, TA Luft Turbocharger

In the TA Luft turbocharger kit, the O ring seal ensures that all connections are sealed, maintaining the turbocharger’s efficiency and performance.

Leak Test Kit

Within the leak test kit, the O ring seal is used to create a sealed environment, allowing for accurate detection of leaks in various engine components.

Lubricating Oil Pump Assembly Plumbing

In the lubricating oil pump assembly plumbing, the O ring seal prevents oil leaks, ensuring that the lubrication system functions correctly.

Oil Assembly Cooler

The O ring seal in the oil assembly cooler ensures that the cooling process is efficient and that there are no oil leaks.

Oil Pressure Assembly Lubricating

In the oil pressure assembly lubricating system, the O ring seal maintains the integrity of the oil pressure, ensuring consistent lubrication.

Single Assembly Mounting

For single assembly mounting, the O ring seal ensures that mounted components are securely sealed, preventing fluid leaks and ensuring stability.

Thermostat (Top Level Assembly) Housing

In the thermostat housing, the O ring seal ensures that coolant flow is regulated effectively, maintaining engine temperature.

Threaded Plug

The O ring seal in threaded plugs ensures that these plugs are tightly sealed, preventing fluid leaks in various engine components.

Vacuum Pump

In the vacuum pump system, the O ring seal ensures that the vacuum is maintained, allowing the pump to function efficiently.

Water Manifold

Finally, in the water manifold, the O ring seal ensures that coolant distribution is even and that there are no leaks in the system.

Conclusion

The Cummins 3679139 O Ring Seal is a vital component in the maintenance and operation of commercial trucks. Its robust design, material properties, and compatibility with a wide range of Cummins engines make it an essential part for ensuring the efficiency, reliability, and safety of truck systems. Regular maintenance and proper installation are key to maximizing the benefits of this part.