4927980
Threaded Plug
Cummins®

Introduction

The Threaded Plug 4927980 is a component manufactured by Cummins, a prominent entity in the commercial truck industry. This plug is integral to the operational framework of commercial trucks, ensuring the integrity and efficiency of various systems. Cummins, recognized for its robust and reliable parts, offers this threaded plug as part of its extensive range of automotive components.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components used to seal openings in various systems, such as engines, fuel lines, and hydraulic systems. They function by creating a secure, leak-proof seal that prevents the escape of fluids or gases. These plugs are commonly used in automotive applications to maintain system pressure, prevent contamination, and ensure the smooth operation of mechanical systems ¹.

Purpose of the 4927980 Threaded Plug

The 4927980 Threaded Plug plays a role in the operation of a truck by sealing specific ports within the engine or other systems. Its primary function is to prevent the leakage of fluids or gases, thereby maintaining system integrity and efficiency. This plug is often used in applications where temporary sealing is required, such as during maintenance or testing procedures ².

Key Features

The 4927980 Threaded Plug is characterized by several key features that enhance its performance and durability. It is typically made from high-quality materials such as brass or stainless steel, which provide excellent corrosion resistance and strength. The plug features a specific thread type that ensures a secure fit within the designated port. Additionally, its design specifications are tailored to meet the rigorous demands of commercial truck applications, ensuring reliable performance under various operating conditions ³.

Benefits

Using the 4927980 Threaded Plug offers several advantages. It contributes to improved system integrity by providing a reliable seal that prevents fluid leaks. This, in turn, helps maintain system pressure and efficiency. The plug’s durable construction ensures long-term performance, reducing the need for frequent replacements. Additionally, its precise design allows for easy installation and removal, facilitating maintenance procedures.

Installation Process

Proper installation of the 4927980 Threaded Plug is crucial to ensure a secure fit and optimal performance. The process involves the following steps:

1. Preparation: Ensure the port is clean and free of debris.
2. Thread Lubrication: Apply a suitable lubricant to the threads of the plug to facilitate installation and prevent damage.
3. Installation: Carefully screw the plug into the port by hand until it is snug. Use a wrench to tighten it further, ensuring it is securely in place without over-tightening.
4. Verification: Check for any signs of leakage or looseness. Make any necessary adjustments to ensure a proper seal.

Common Issues and Troubleshooting

Threaded plugs, including the 4927980, may encounter issues such as leaks or difficulty in removal. Common problems include:

• Leakage: This can be caused by improper installation, damaged threads, or corrosion. Inspect the plug and port for any signs of damage or wear. Re-seat the plug or replace it if necessary.
• Difficulty in Removal: Over-tightening or corrosion can make removal challenging. Use a wrench to carefully loosen the plug. If it remains stuck, apply a penetrating lubricant and allow it to sit for a period before attempting removal again.

Maintenance Tips

Regular maintenance of the 4927980 Threaded Plug is important to ensure its longevity and optimal performance. Inspect the plug during routine maintenance checks for signs of wear, corrosion, or damage. Replace the plug if any issues are detected. Additionally, ensure that the port remains clean and free of debris to prevent installation difficulties and ensure a secure seal.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and related components. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s extensive product range and commitment to customer satisfaction have made it a preferred choice for commercial vehicle operators and maintenance professionals.

Threaded Plug 4927980 Compatibility with Cummins Engines

The Threaded Plug 4927980, manufactured by Cummins, is designed to fit a variety of their engine models. This part is integral to the engine’s operation, ensuring proper sealing and functionality. Here is a detailed look at its compatibility across different engine series:

QSK19 Series

• QSK19 CM2350 K105
• QSK19 CM2350 K114
• QSK19 CM850 MCRS

The QSK19 series engines, including the CM2350 K105, CM2350 K114, and CM850 MCRS variants, all utilize the Threaded Plug 4927980. This part is essential for maintaining the integrity of the engine’s sealing system, ensuring that the engine operates efficiently and reliably.

QSK38 Series

• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS

The QSK38 series engines, specifically the CM2150 MCRS and CM850 MCRS models, also incorporate the Threaded Plug 4927980. This part is crucial for these engines, providing a secure and leak-proof connection where needed.

QSK50 Series

• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108

The QSK50 series engines, including the CM2150 K107, CM2150 MCRS, and CM2350 K108 variants, are compatible with the Threaded Plug 4927980. This part ensures that the engine’s sealing requirements are met, contributing to the overall performance and longevity of the engine.

QSK60 Series

• QSK60 CM850 MCRS

The QSK60 series engine, specifically the CM850 MCRS model, also uses the Threaded Plug 4927980. This part is vital for the engine’s sealing needs, ensuring that the engine operates under optimal conditions.

By ensuring that the Threaded Plug 4927980 is correctly installed, engine operators can maintain the efficiency and reliability of their Cummins engines across various series and models.

Role of Part 4927980 Threaded Plug in Engine Systems

The 4927980 Threaded Plug is an essential component in various engine systems, particularly those involving fuel management. Its primary function is to seal and secure openings within these systems, ensuring the integrity and efficiency of fuel delivery.

In the Fuel Injection Pump, the 4927980 Threaded Plug is used to seal ports and passages that are not in use. This prevents fuel leakage and maintains the precise pressure required for optimal injection. By ensuring a tight seal, it contributes to the consistent performance of the injection pump, which is vital for the engine’s overall efficiency.

Within the Fuel Pump system, this threaded plug plays a similar role. It seals off any unnecessary openings, preventing fuel from escaping and ensuring that the pump can maintain the necessary pressure to deliver fuel to the engine. This is particularly important in high-pressure fuel systems where even minor leaks can significantly impact performance.

For general Pump applications, the 4927980 Threaded Plug is utilized to cap off ports that are not actively used during operation. This helps in maintaining the structural integrity of the pump housing and prevents contaminants from entering the system, which could lead to wear and reduced efficiency.

In summary, the 4927980 Threaded Plug is a fundamental component in ensuring the sealing and security of various fuel system components. Its role in maintaining system integrity and preventing leaks is indispensable for the reliable operation of engine systems.

Conclusion

The 4927980 Threaded Plug by Cummins is a critical component in the maintenance and operation of commercial truck engines. Its role in sealing various systems ensures the integrity and efficiency of engine operations. Proper installation, regular maintenance, and understanding its compatibility with different Cummins engine models are essential for maximizing the performance and longevity of this Cummins part.