3926910
Threaded Plug
Cummins®

Introduction

The Threaded Plug 3926910 is a component manufactured by Cummins, a prominent entity in the commercial trucking industry. This part is designed to fulfill specific roles within the engine and other systems of commercial trucks, contributing to the optimal performance and longevity of the vehicle.

Function and Operation

The Threaded Plug 3926910 serves to provide a secure seal in various parts of the truck’s engine and systems. It is primarily utilized to close off openings where fluids or gases need to be contained, preventing leaks and maintaining system integrity. Its design allows it to fit snugly into threaded ports, creating a barrier essential for the proper functioning of the engine and associated systems.

Key Features

This Cummins part is characterized by its robust design and high-quality materials. It features a specific thread type and size that ensures a precise fit in the designated ports. The plug may also include special coatings or treatments that enhance its durability and resistance to the harsh conditions within an engine environment.

Benefits

Utilizing the Threaded Plug 3926910 offers several advantages. It provides improved sealing efficiency, which is vital for maintaining the integrity of the engine’s fluid systems. Additionally, its resistance to corrosion ensures longevity, even in demanding operating conditions. The plug is also designed for ease of installation, which can save time during maintenance procedures.

Common Applications

This plug is typically employed in various commercial truck models, particularly within Cummins engines. It is used in systems where secure sealing is required, such as in the engine block, oil galleries, and other critical areas where fluid containment is necessary.

Installation Procedures

Proper installation of the Threaded Plug 3926910 involves several steps to ensure a secure fit. It is important to follow torque specifications provided by the manufacturer to avoid over-tightening, which could damage the plug or the port. Preparatory steps may include cleaning the port and inspecting the plug for any damage prior to installation.

Maintenance and Troubleshooting

Regular maintenance of the Threaded Plug 3926910 involves checking for signs of wear or damage that could indicate a potential leak. If issues such as leaks are detected, the plug should be inspected and replaced if necessary. Troubleshooting may also involve checking for proper torque and ensuring that the plug is correctly seated in the port.

Safety Considerations

When working with the Threaded Plug 3926910, it is important to observe safety guidelines. This includes wearing appropriate personal protective equipment and ensuring that the engine is cool before beginning any maintenance or installation procedures. Proper disposal of any old or damaged plugs should also be considered to avoid environmental contamination.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history spanning over a century, Cummins is renowned for its engines, related technologies, and customer solutions. The company’s reputation within the commercial trucking industry is built on a foundation of innovation, quality, and reliability ¹.

Compatibility with Cummins Engines

The Threaded Plug 3926910, manufactured by Cummins, is designed to fit a variety of Cummins engines. This plug is essential for sealing and securing various components within the engine system, ensuring optimal performance and preventing leaks.

Compatible Engines

• 6B5.9
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F4.5 CM2620 F141C
• ISB CM550
• ISB CM850
• ISB4.5 CM2350 B104
• ISF3.8 CM2220 AN
• QSB5.9 CM850
• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

Grouping of Compatible Engines

The engines listed can be grouped based on their series and specifications:

• F Series Engines:

  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F4.5 CM2620 F141C
  • QSF3.8 CM2350 F107
  • QSF3.8 CM2880 F112

• ISB Series Engines:

  • ISB CM550
  • ISB CM850
  • ISB4.5 CM2350 B104

• ISF Series Engines:

  • ISF3.8 CM2220 AN

• QSB Series Engines:

  • QSB5.9 CM850

The Threaded Plug 3926910 is engineered to meet the specific sealing requirements of these engines, ensuring a secure fit and reliable performance across the different engine models.

Role of Threaded Plug 3926910 in Engine Systems

The Threaded Plug 3926910 is an essential component in various engine systems, particularly in the oil management subsystem. It is strategically utilized to seal and secure openings in components such as the oil pan and other oil-related parts.

In the oil pan, the threaded plug is employed to seal threaded holes that may be used for oil level sensors, oil pressure sensors, or other monitoring devices. By providing a secure seal, it ensures that oil does not leak from these openings, maintaining the integrity of the oil system. This is particularly important in high-performance engines where oil pressure and levels must be precisely monitored and maintained ².

Additionally, the threaded plug is used in other oil-related components to seal off areas where maintenance or inspection ports are located. These ports are often used during engine servicing to check oil levels, perform oil changes, or inspect internal components without fully disassembling the engine. The threaded plug ensures that these ports are sealed when not in use, preventing oil loss and contamination.

Furthermore, in systems where oil pans are designed with multiple chambers or baffles, the threaded plug may be used to seal off these chambers, ensuring that oil flow is directed correctly through the engine. This helps in maintaining optimal oil circulation, which is vital for engine lubrication and cooling ³.

Conclusion

In summary, the Threaded Plug 3926910 plays a significant role in ensuring the reliability and efficiency of the engine’s oil management system by providing secure seals in various oil-related components. Its robust design, ease of installation, and compatibility with a wide range of Cummins engines make it a valuable component in maintaining the performance and longevity of commercial trucks.