3336639
Threaded Plug
Cummins®

The 3336639 Threaded Plug, a component manufactured by Cummins, is designed for use in commercial trucks. This part serves a specific function within the vehicle’s systems, contributing to the maintenance of system integrity and efficiency.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components used to seal threaded openings in various systems. They are screwed into place, creating a secure seal that prevents fluid leaks and protects against contaminants. Materials such as brass, steel, or plastic are commonly used, each offering different properties like corrosion resistance, strength, and temperature tolerance ¹.

Purpose of the 3336639 Threaded Plug

The 3336639 Threaded Plug is designed to seal specific openings within a truck’s system, ensuring that fluids remain contained and contaminants are kept out. It contributes to the overall functionality and efficiency of the truck by maintaining a secure seal ².

Key Features

This Cummins part features a design and material composition tailored to its specific application in commercial trucks. It is constructed from materials that offer durability and resistance to the operating conditions it will encounter. Unique characteristics such as its thread design and sealing properties contribute to its performance and longevity ³.

Benefits

Utilizing the 3336639 Threaded Plug offers several benefits, including improved system integrity through secure sealing, enhanced performance by preventing fluid leaks, and increased longevity due to its durable construction. These advantages translate to operational benefits for truck operators and fleet managers, such as reduced maintenance needs, improved truck reliability, and potentially lower operating costs.

Installation Process

Proper installation of the 3336639 Threaded Plug is crucial for its effective performance and safety. The installation process involves screwing the plug into the designated opening, ensuring it is aligned correctly and tightened to the specified torque. Adhering to the correct torque specifications is important to achieve an optimal seal without over-tightening, which could damage the plug or the surrounding components.

Troubleshooting and Maintenance

Common issues with threaded plugs include leaks due to improper installation or wear over time. Identifying these issues early can prevent more significant problems. Troubleshooting may involve checking the plug’s alignment and tightness, inspecting for damage, or replacing the plug if necessary. Regular maintenance, including periodic inspections and following replacement guidelines, can ensure the longevity and proper function of the 3336639 Threaded Plug.

Cummins: A Brief Overview

Cummins Inc. is a leader in the commercial truck industry, known for its commitment to quality and innovation in manufacturing truck components. With a rich history of providing reliable and high-performance parts, Cummins plays a significant role in enhancing the efficiency and reliability of commercial trucks. The company’s dedication to excellence is evident in its products, including the 3336639 Threaded Plug, which embodies Cummins’ standards for quality and performance.

Compatibility with Cummins Engines

The Cummins Threaded Plug part number 3336639 is designed to fit seamlessly with a variety of Cummins engines. This plug is essential for maintaining the integrity of the engine’s fuel and lubrication systems, ensuring that there are no leaks or disruptions in the flow of fluids.

Grouping of Compatible Engines

• QSV81G and QSV91G Engines: The Threaded Plug 3336639 is compatible with the QSV81G and QSV91G engines, ensuring secure and leak-proof threaded connections.
• QSW/QSV82 Engines: For the QSW/QSV82 engines, the Threaded Plug 3336639 provides a tight seal, preventing any fluid from escaping and maintaining the engine’s operational efficiency.
• QSW27 and QSW36 Engines: The Threaded Plug 3336639 is also compatible with the QSW27 and QSW36 engines, ensuring smooth operation without leaks.
• QSW73 Engine: The QSW73 engine benefits from the Threaded Plug 3336639, which fits into the threaded connections, ensuring sealed and operational fluid systems.
• QSZ90 Engine: Lastly, the QSZ90 engine is compatible with the Threaded Plug 3336639, providing a secure seal crucial for the engine’s performance and longevity.

Role of Part 3336639 Threaded Plug in Various Engine Systems

The 3336639 Threaded Plug serves as a vital component in numerous engine systems, ensuring the integrity and functionality of these systems. Its applications across different components include:

1. Coolant Heater Starting Assembly: Seals openings to prevent coolant leakage, ensuring optimal pressure and temperature for efficient engine starting in cold conditions.
2. Flange Assembly: Closes off unused ports to prevent contaminants from entering the system and maintains structural integrity.
3. Expansion Assembly Tank: Seals bleed ports to manage pressure within the cooling system, allowing for safe expansion and contraction of the coolant.
4. Filter and Fuel Systems: Seals off unused ports in fuel filter assembly, fuel assembly plumbing, and fuel assembly pump, maintaining a clean and contaminant-free fuel system.
5. Flywheel Housing Plumbing: Seals passages not required for operation, directing fluid flow accurately and preventing leaks.
6. Heat Assembly Exchanger: Seals off unused ports in the heat exchange process, ensuring efficient heat transfer between fluids.
7. Lubricating Oil Systems: Seals off ports in lubricating oil assembly plumbing and pump systems, preventing oil leaks and maintaining proper pressure.
8. Oil Assembly Pan and Pre-Lube Pump: Seals openings to contain oil within the system, particularly important during engine start-up.
9. Plumbing and Pump Systems: Seals off unnecessary passages in fuel transfer and lubricating oil pumps, ensuring correct fluid direction and operational efficiency.
10. Engine Monitoring System: Seals unused sensor ports to ensure accurate engine condition readings.
11. Tank Expansion Assembly: Seals bleed ports to manage pressure within the tank as the fluid expands and contracts with temperature changes.

Conclusion

The 3336639 Threaded Plug plays a significant role in maintaining the functionality and efficiency of various engine systems by ensuring proper sealing and preventing leaks. Its compatibility with a range of Cummins engines and its application across different engine components highlight its importance in the commercial truck industry.