3867646
O Ring Seal
Cummins®

The 3867646 O-Ring Seal, manufactured by Cummins, is a component used in the maintenance and operation of commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of parts designed to enhance the efficiency and reliability of truck systems. This Cummins part plays a role in ensuring the proper functioning of various truck systems.

Basic Concepts of O-Ring Seals

An O-Ring Seal is a type of gasket with a circular cross-section, designed to create a seal between two or more parts ¹. In mechanical systems, O-Ring Seals are used to prevent the leakage of fluids and gases, ensuring the integrity of the system. They operate by deforming slightly when compressed between two surfaces, creating a tight seal that can withstand pressure and environmental factors.

Purpose of the 3867646 O-Ring Seal in Truck Operation

This part is utilized in specific applications within commercial trucks. It is employed in systems where fluid or gas sealing is required to maintain system efficiency and prevent leaks. This O-Ring Seal supports various truck systems by ensuring that seals remain intact under operational conditions, contributing to the overall performance and reliability of the truck.

Key Features of the 3867646 O-Ring Seal

The 3867646 O-Ring Seal is characterized by its design and material properties, which are tailored to meet the demands of truck applications. It is made from materials that offer resistance to a range of environmental factors, including temperature variations, chemical exposure, and mechanical stress. These features contribute to the seal’s effectiveness and durability in demanding truck environments.

Benefits of Using the 3867646 O-Ring Seal

The use of this part offers several advantages. It provides improved sealing performance, ensuring that systems operate efficiently without leaks. Its durability and resistance to environmental factors contribute to its longevity, reducing the need for frequent replacements. Additionally, the seal’s design allows for easy installation and maintenance, further enhancing its value in truck applications.

Installation Guidelines

To ensure optimal performance and longevity of the 3867646 O-Ring Seal, it is important to follow proper installation procedures. This includes ensuring the mating surfaces are clean and free from debris, using the correct amount of lubrication during installation, and avoiding over-tightening which can damage the seal. Careful installation helps maintain the integrity of the seal and the systems it supports.

Troubleshooting Common Issues

Common problems with O-Ring Seals in truck applications can include leaks, seal deformation, and failure due to environmental factors. Troubleshooting these issues involves inspecting the seal and mating surfaces for damage, ensuring proper installation, and replacing the seal if necessary. Regular checks can help identify potential issues before they lead to system failures.

Maintenance Tips

Regular maintenance and inspection of the 3867646 O-Ring Seal are recommended to prevent failures and extend its service life. This includes checking for signs of wear or damage, ensuring that mating surfaces remain clean, and replacing the seal according to the manufacturer’s guidelines or when signs of degradation are observed. Proper maintenance helps maintain system efficiency and reliability.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions ². With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. Its product range is designed to meet the diverse needs of truck operators, focusing on performance, reliability, and efficiency.

Cummins O-Ring Seal 3867646 Compatibility

The Cummins O-Ring Seal part number 3867646 is a component designed to ensure a tight seal in various engine applications. This seal is engineered to fit seamlessly within the engine systems, providing a reliable barrier against leaks and maintaining system integrity. Below is a detailed overview of the engines with which this O-Ring Seal is compatible.

B4.5 Series Engines

• B4.5 CM2350 B129B
• B4.5 RGT

B6.7 Series Engines

• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125

D4.0 Series Engines

• D4.0 CM2620 D103B

F3.8 Series Engines

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102

F4.5 Series Engines

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISB/ISD Series Engines

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

ISC and ISL Series Engines

• ISC CM554
• ISL CM554

ISF Series Engines

• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

This O-Ring Seal is meticulously designed to fit the specific dimensions and requirements of each engine model, ensuring optimal performance and longevity. Its compatibility across a wide range of Cummins engines underscores its versatility and importance in maintaining engine efficiency and reliability.

Role of Part 3867646 O-Ring Seal in Engine Systems

The part 3867646 O-Ring Seal is integral to maintaining the integrity and efficiency of various engine components. Its application spans across multiple systems, ensuring that each part functions optimally without leaks or inefficiencies.

Air Intake and Shutdown Systems

In the air intake connection, the O-Ring Seal prevents air leaks, ensuring that the correct amount of air enters the engine for combustion. Similarly, in the air shutdown device, it maintains a secure seal, which is essential for the device to function correctly during engine shutdown procedures.

Cam Housing and Modules

For the cam housing and cam housing module, the O-Ring Seal is used to create a tight seal around the housing, preventing oil leaks and ensuring that the camshaft operates within a lubricated environment. This is vital for the longevity and performance of the camshaft.

Cylinder Block and Fuel Systems

In the cylinder block, the O-Ring Seal is employed to seal various passages and connections, maintaining the integrity of the combustion chamber and preventing coolant or oil leaks.

For the fuel injection pump and fuel pump, the seal is critical in maintaining pressure within the fuel lines and preventing fuel leaks, which ensures efficient fuel delivery to the engine.

Comprehensive Engine Gasket and Overhaul Kits

The full engine gasket set and overhaul kit often include O-Ring Seals to replace worn-out seals during engine rebuilds. These seals are essential in re-establishing the necessary seals between various engine components.

Seal and Turbocharger Kits

In the seal kit, O-Ring Seals are a common component used to replace seals in various parts of the engine.

For the turbocharger actuator kit, turbocharger arrangement, turbocharger gasket kit, and turbocharger kit, the O-Ring Seal ensures that the turbocharger operates efficiently by preventing air leaks and maintaining the necessary pressure differentials.

Upper Engine Gasket Sets

Finally, in the upper engine gasket kit and upper engine gasket set, O-Ring Seals are used to ensure that the upper components of the engine, such as the cylinder head and intake manifold, are properly sealed. This is important for maintaining engine performance and preventing leaks that could lead to engine damage.

Conclusion

The 3867646 O-Ring Seal by Cummins is a critical component in the maintenance and operation of commercial trucks. Its role in preventing leaks and ensuring the integrity of various engine systems underscores its importance in maintaining engine efficiency and reliability. Proper installation, regular maintenance, and understanding its applications across different engine models are key to maximizing the benefits of this part.