3067347
Threaded Plug
Cummins®

Introduction

The Cummins 3067347 Threaded Plug is a critical component in the maintenance and operation of commercial trucks. It serves a specific function within the truck’s systems, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and significance is essential for maintaining the truck’s performance and longevity.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components designed to seal openings in various systems, such as engines, hydraulic systems, and fuel lines. They function by creating a secure, leak-proof seal when screwed into place. In automotive and industrial settings, threaded plugs are used to prevent fluid leaks, protect against contaminants, and maintain system pressure. They are integral to ensuring the integrity and efficiency of the systems they serve ¹.

Purpose of the Cummins 3067347 Threaded Plug

The Cummins 3067347 Threaded Plug plays a role in sealing specific ports within a truck’s engine or other systems. Its primary function is to prevent the escape of fluids or gases, ensuring that the system operates under the correct pressure and without leaks. This plug is typically used in applications where a temporary or permanent seal is required, such as during maintenance procedures or as a part of the engine’s design ².

Key Features

The Cummins 3067347 Threaded Plug is engineered with specific features to enhance its performance and durability. It is made from high-quality materials that resist corrosion and wear, ensuring a long service life. The plug features a precise thread type that matches the port it is designed to seal, providing a secure fit. Its design specifications are tailored to withstand the pressures and temperatures encountered in commercial truck applications.

Benefits

Using the Cummins 3067347 Threaded Plug offers several advantages. It contributes to improved system integrity by providing a reliable seal, preventing fluid leaks that could lead to system failure or contamination. Additionally, by maintaining proper system pressure, it enhances the overall performance and efficiency of the engine or other systems it serves.

Installation Process

Installing the Cummins 3067347 Threaded Plug requires careful attention to detail to ensure a secure fit. The process involves cleaning the port to remove any debris, applying a compatible sealant if necessary, and screwing the plug into place using the appropriate tools. It is important to follow the manufacturer’s guidelines for torque specifications to avoid over-tightening, which could damage the plug or the port.

Troubleshooting Common Issues

Common issues with threaded plugs include leaks due to improper seating or damage to the plug or port. To address these problems, it is important to inspect the plug and port for signs of wear or damage. If a leak is detected, the plug should be removed, the port cleaned, and the plug re-installed with care, ensuring a proper seal. In some cases, replacing the plug may be necessary to resolve the issue.

Maintenance Tips

Regular maintenance of the Cummins 3067347 Threaded Plug involves periodic inspection for signs of wear, corrosion, or damage. Cleaning the plug and port during maintenance procedures can help prevent leaks and ensure a secure seal. If the plug shows signs of significant wear or if leaks persist, it may be time to consider replacement to maintain system integrity.

Compatibility and Usage

The Cummins 3067347 Threaded Plug is designed for use in specific applications within various truck models and engine types. Its compatibility ensures that it can be relied upon to perform its function effectively across a range of commercial truck systems.

Manufacturer Information - Cummins

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 strong reputation in the commercial truck industry, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product range and expertise make it a trusted partner for commercial truck manufacturers and operators worldwide.

Compatibility with Cummins Engines

The Cummins 3067347 Threaded Plug is compatible with various Cummins engine models, ensuring proper sealing and functionality in different engine configurations.

Small Bore Engines

The 3067347 threaded plug is compatible with several small bore engines, including:

• B5.9 G
• G855
• K19
• K38
• K50
• KTA19GC CM558
• QSK19 CM2350 K114
• QSK19 CM500
• QSK19 CM850 MCRS
• QSK19G
• QSN14 CM876 N103

Medium Bore Engines

For medium bore engines, the 3067347 threaded plug is suitable for:

• L10 CELECT
• L10 MECHANICAL
• M11 CELECT PLUS
• M11 MECHANICAL
• N14 CELECT PLUS
• N14 MECHANICAL
• NH/NT 855

V-Type Engines

The 3067347 threaded plug also fits into V-type engines, such as:

• V28

Role of the 3067347 Threaded Plug in Engine Systems

The 3067347 Threaded Plug is an essential component in various engine systems, providing sealing and protection in different applications. Here’s how it integrates with the provided components:

Aftercooler Plumbing

In aftercooler systems, the 3067347 Threaded Plug is used to seal openings where connections are not required, ensuring that the system remains airtight and efficient. This helps maintain the integrity of the aftercooling process, which is vital for reducing the temperature of compressed air before it enters the engine.

Cooler and Lubricating Oil Cooler

For both engine oil coolers and lubricating oil coolers, the 3067347 Threaded Plug is employed to cap off unused ports. This prevents contaminants from entering the cooling system and ensures that the cooling process is unimpeded, thereby maintaining optimal engine temperature.

Engine Oil and Full Flow Oil Filter

In engine oil systems, the 3067347 Threaded Plug is utilized to seal off any unnecessary openings in the oil passages. This ensures that oil flows smoothly through the full flow oil filter, enhancing filtration efficiency and prolonging the life of the engine components.

Fuel System Components

In the fuel pump housing and fuel top-level assembly pump, the 3067347 Threaded Plug seals ports that are not in use. This is important for maintaining fuel pressure and preventing leaks, which ensures consistent fuel delivery to the engine.

Lubricating Oil and Fuel Tubing

For lubricating oil and fuel tubing systems, the 3067347 Threaded Plug is used to close off any extra connections, ensuring that the tubing system remains sealed and efficient. This is particularly important in high-pressure fuel systems where any leak can affect engine performance.

Water Manifold and Water Outlet Connection

In water manifolds and water outlet connections, the 3067347 Threaded Plug seals off ports that are not required for the current configuration. This helps in maintaining the efficiency of the cooling system by preventing water loss and ensuring consistent coolant flow.

Oil Control Valve and Pressure-Time Pacer Mounting Module

The 3067347 Threaded Plug is also used in oil control valves and pressure-time pacer mounting modules to seal off any unnecessary openings. This ensures that the valve operates efficiently and that the pressure-time pacing system functions correctly, contributing to overall engine performance.

Modified Centry (24V) and Electronic Step (24V) Kit

In electrical systems such as the modified centry (24V) and electronic step (24V) kit, the 3067347 Threaded Plug is used to seal off any unused electrical connections. This prevents short circuits and ensures that the electrical systems operate safely and efficiently.

Pump and Fuel Injection System

In pump and fuel injection systems, the 3067347 Threaded Plug is used to seal any unnecessary openings, ensuring that the system remains pressurized and leak-free. This is essential for maintaining the precision and reliability of fuel injection.

Spare Parts Kit and Performance Parts

In spare parts kits and performance parts, the 3067347 Threaded Plug is included as a versatile component that can be used across various systems to seal off unused ports, ensuring that the engine systems remain efficient and reliable.

Conclusion

The Cummins 3067347 Threaded Plug is a versatile and essential component in the maintenance and operation of commercial trucks. Its role in sealing various ports within engine systems ensures the integrity, efficiency, and reliability of the vehicle. Proper installation, maintenance, and understanding of its compatibility with different engine types are crucial for maximizing its benefits and ensuring the longevity of the truck’s systems.