3904470
O Ring Plug
Cummins®

Introduction

The Cummins 3904470 O-Ring Plug is a critical component for maintaining the integrity of fluid systems in commercial trucks. This part ensures reliable sealing, preventing leaks and enhancing system efficiency. Its importance is underscored by its role in the overall performance and reliability of the truck’s engine and associated systems.

Basic Concepts of O-Ring Plugs

An O-Ring Plug is a seal that uses a circular rubber ring to prevent fluid or gas leakage. It works by being compressed between two surfaces, creating a tight seal that maintains system pressure and prevents contamination. In mechanical systems, O-Ring Plugs are essential for applications requiring secure seals.

Purpose of the 3904470 O-Ring Plug

The Cummins 3904470 O-Ring Plug is designed to fit into specific ports within a truck’s engine or other systems. Its main function is to seal these ports, ensuring that fluids remain contained within the system. This helps maintain engine efficiency and prevents damage from leaks.

Key Features

The Cummins 3904470 O-Ring Plug is made from high-quality materials that resist various fluids and operating conditions. Its design ensures a precise fit for effective sealing. The durable material composition enhances its performance, providing a reliable seal under different conditions.

Benefits

Using the Cummins 3904470 O-Ring Plug offers several advantages. It improves sealing efficiency, reducing the risk of leaks that could cause system failure. Its durability ensures long-term performance, even under demanding conditions. Additionally, the plug contributes to the overall reliability of the truck’s systems, supporting consistent operation.

Installation Process

To install the Cummins 3904470 O-Ring Plug, ensure the port is clean and free of debris. Carefully place the O-Ring into the port, ensuring it is seated correctly. Use the appropriate tools to secure the plug, ensuring a snug fit without over-tightening, which could damage the O-Ring. Verify the seal by checking for any signs of leakage after installation.

Troubleshooting Common Issues

Common issues with O-Ring Plugs include leaks due to wear or improper installation. To address these problems, inspect the O-Ring for signs of damage or deformation. If the O-Ring appears worn, replace it with a new one. Ensure the port is clean and free of debris before reinstalling the plug. If leaks persist, verify that the plug is correctly seated and secured.

Maintenance Tips

Regular maintenance of the Cummins 3904470 O-Ring Plug involves periodic inspection for signs of wear or damage. It is recommended to check the plug during routine system inspections and replace it if any deterioration is observed. Following manufacturer guidelines for replacement intervals can help prolong the lifespan of the O-Ring Plug and ensure continued system reliability.

Cummins 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. 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 durability of commercial vehicles ¹.

Cummins Engine Compatibility with Part 3904470 O-Ring Plug

The Cummins part 3904470 O-Ring Plug is designed to fit a variety of Cummins engines, ensuring a secure seal in various applications. This part is essential for maintaining the integrity of the engine’s systems by preventing leaks and ensuring proper fluid containment.

Compatible Engines

• 4B3.9
• 6B5.9
• 6C8.3
• B3.9 G
• B5.9 G
• B5.9 GAS PLUS CM556
• C GAS PLUS CM556
• C8.3 G
• G5.9
• G5.9 CM558
• G8.3
• ISB5.9G CM2180

Grouping of Compatible Engines

• B Series Engines

  • B3.9 G
  • B5.9 G
  • B5.9 GAS PLUS CM556

• C Series Engines

  • C GAS PLUS CM556
  • C8.3 G

• G Series Engines

  • G5.9
  • G5.9 CM558
  • G8.3

• 4B Series Engines

  • 4B3.9

• 6B Series Engines

  • 6B5.9

• 6C Series Engines

  • 6C8.3

• ISB Series Engines

  • ISB5.9G CM2180

This O-Ring Plug is engineered to meet the specific sealing requirements of each engine model, ensuring compatibility and performance across the range of Cummins engines listed.

Role of Part 3904470 O-Ring Plug in Engine Systems

The 3904470 O-Ring Plug is a vital component in various engine systems, ensuring the integrity and efficiency of several key parts.

In the context of the flywheel, the O-Ring Plug is used to seal any potential gaps or openings, preventing the ingress of contaminants that could compromise the flywheel’s performance. This seal is particularly important in maintaining the precision and balance required for smooth engine operation.

Within the housing, the O-Ring Plug plays a significant role in creating a tight seal between different sections of the housing. This is vital for preventing leaks and ensuring that fluids or gases remain contained within their designated pathways. The integrity of the seal directly impacts the overall efficiency and reliability of the housing.

When it comes to the Powertrain Control Module (PDC), the O-Ring Plug is employed to protect sensitive electronic components from moisture and debris. This protection is essential for the longevity and accurate functioning of the PDC, which is responsible for managing various engine operations.

In orifice plugs, the 3904470 O-Ring Plug ensures that the flow of fluids is regulated correctly without any bypass or leakage. This regulation is key to maintaining the proper pressure and flow rates necessary for optimal engine performance.

Lastly, in engine kits, the O-Ring Plug is often included to provide a comprehensive sealing solution for multiple components within the kit. This ensures that all parts work in unison, contributing to the overall efficiency and durability of the engine system.

Conclusion

The Cummins 3904470 O-Ring Plug is an essential component for maintaining the integrity and efficiency of fluid systems in commercial trucks. Its reliable sealing capabilities prevent leaks, enhance system performance, and contribute to the overall reliability of the truck’s engine and associated systems. Regular maintenance and proper installation are crucial for ensuring the longevity and effectiveness of this part.