3679880
Threaded Plug
Cummins®

Introduction

The Cummins Threaded Plug 3679880 is a component designed for use in commercial trucks. It serves a vital role in maintaining the integrity of various systems within these vehicles. This part is specifically engineered to ensure proper sealing and pressure management, contributing to the overall efficiency and reliability of the truck’s operation.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical devices used to seal openings in automotive systems. They consist of a cylindrical body with threads that allow them to be screwed into corresponding threaded holes. These plugs are utilized in a variety of applications, including engine blocks, fuel systems, and hydraulic systems, to prevent leaks and maintain system pressure. Their design ensures a secure fit, which is crucial for the safe and efficient operation of automotive systems ¹.

Purpose of the Cummins Threaded Plug 3679880

The Cummins Threaded Plug 3679880 is designed to play a specific role in the operation of commercial trucks. It is used to seal openings within the engine or other systems, ensuring that fluids and gases remain contained under pressure. This plug helps maintain the integrity of the system by preventing leaks, which can lead to decreased performance and potential damage. Its application is essential in environments where precise pressure management is required to ensure optimal vehicle operation ².

Key Features

The Cummins Threaded Plug 3679880 is characterized by several key features that enhance its functionality. It is constructed from durable materials that can withstand the high temperatures and pressures found in commercial truck engines. The plug features a specific thread type that ensures a secure fit in the corresponding threaded holes. Its design is tailored to provide a reliable seal, which is essential for maintaining system integrity ³.

Benefits

Using the Cummins Threaded Plug 3679880 offers several advantages. Its robust construction and precise design contribute to improved system integrity, ensuring that fluids and gases are effectively contained. This part is engineered to provide longevity and reliability, even in demanding conditions. Its use helps maintain the efficiency and performance of the truck’s systems, reducing the likelihood of leaks and associated issues.

Installation Process

Proper installation of the Cummins Threaded Plug 3679880 is crucial for ensuring optimal performance and longevity. The installation process involves cleaning the threaded hole to remove any debris or old sealant. The plug should then be screwed into the hole by hand until it is snug, followed by the use of a torque wrench to achieve the manufacturer’s specified torque setting. This ensures a secure fit that will maintain the integrity of the system.

Common Issues and Troubleshooting

Threaded plugs, including the Cummins Threaded Plug 3679880, may encounter issues such as leaks or difficulty in removal. These problems can often be traced to improper installation, damage to the plug or the threaded hole, or corrosion. Diagnosing these issues involves inspecting the plug and the surrounding area for signs of damage or wear. Troubleshooting steps may include cleaning the area, reapplying sealant, or replacing the plug if necessary to restore system efficiency.

Maintenance Tips

Maintaining the Cummins Threaded Plug 3679880 involves regular inspection and cleaning to ensure its continued effectiveness. Inspecting the plug for signs of wear or damage can help identify potential issues before they lead to system failure. Cleaning the plug and the surrounding area can prevent the buildup of debris that may interfere with its function. If the plug shows signs of significant wear or if leaks are detected, it may be necessary to replace it to maintain system integrity.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. The company offers a wide range of products designed to meet the demanding requirements of commercial vehicles, ensuring reliability and performance in various applications ⁴.

Compatibility with Cummins Engines

The Threaded Plug 3679880, manufactured by Cummins, is a versatile component designed to fit a variety of Cummins engines. This plug is integral for sealing and securing various parts within the engine system, ensuring optimal performance and reliability.

ISX Series Engines

The Threaded Plug 3679880 is compatible with several variants of the ISX series engines, including:

• ISX CM570
• ISX CM870
• ISX CM871
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

These engines are known for their robust performance and are widely used in heavy-duty applications.

QSK Series Engines

The Threaded Plug also fits the following QSK series engines:

• QSK95 CM2350 K111
• QSK95 CM2350 K113

These engines are designed for high-performance applications, offering durability and efficiency.

QSV and QSW Series Engines

The Threaded Plug 3679880 is also suitable for the following QSV and QSW series engines:

• QSV81G
• QSV91-G4 CM558/CM700 V102
• QSV91G
• QSW/QSV82
• QSW27
• QSW36
• QSW73
• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

These engines are engineered for a range of applications, from medium to heavy-duty, providing reliable power and efficiency.

X15 Series Engines

The Threaded Plug is also compatible with the following X15 series engines:

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

These engines are designed for high-performance and durability, making them suitable for demanding applications.

GTA38 G CMEICS G116C

The Threaded Plug 3679880 is also compatible with the GTA38 G CMEICS G116C engine, ensuring a secure fit and optimal performance in this specific engine model.

This compatibility ensures that the Threaded Plug 3679880 can be used across a broad range of Cummins engines, providing a reliable and secure solution for sealing and securing various engine components.

Role of Part 3679880 Threaded Plug in Engine Systems

The Threaded Plug, identified as part 3679880, serves a significant function in various engine systems by ensuring the integrity and efficiency of these components. Here’s how it integrates with the provided engine systems:

Accessory Drive and Front Gear Housing

In the accessory drive and front gear housing, the Threaded Plug is utilized to seal openings where shafts or other components pass through. This prevents lubricants from leaking out and contaminants from entering, thereby maintaining the efficiency and longevity of the accessory drive and the front gear housing.

Cylinder Assembly Block and Cylinder Block

Within the cylinder assembly block and cylinder block, the Threaded Plug is essential for sealing off coolant passages or oil galleries. This ensures that the cooling and lubrication systems operate effectively, preventing any cross-contamination between systems and maintaining optimal engine performance.

Engine Oil Cooler and Oil Filter Systems

For the engine oil cooler, full flow assembly filter, full flow oil filter, and various oil filter components (such as the oil filter housing, oil filter cooler head, and lubricating oil filter head), the Threaded Plug plays a role in sealing ports that are not in use. This helps in directing the flow of oil through the intended pathways, enhancing the filtration process and ensuring that the oil remains clean and effective for lubrication.

Lubricating Oil Assembly and Mounting Filter

In the lubricating oil assembly filter and lubricating oil mounting filter, the Threaded Plug is used to seal off any unnecessary openings, ensuring that the filtration process is not compromised by bypassing oil. This maintains the quality of the lubricant and protects engine components from wear.

Thermostat Housing and Mounting

For the thermostat assembly housing, thermostat housing, and thermostat mounting housing, the Threaded Plug is employed to seal off coolant passages that are not active. This ensures that the thermostat can regulate the engine’s temperature effectively by controlling the flow of coolant through the engine.

Pressure Limiting Valve and Other Components

In systems like the pressure limiting valve, the Threaded Plug helps in maintaining the pressure integrity by sealing off any unnecessary openings. This ensures that the valve can function correctly, protecting the engine from over-pressurization.

Summary of Integration

Overall, the Threaded Plug (part 3679880) is a versatile component that enhances the functionality and reliability of various engine systems. By sealing off unnecessary openings and preventing leaks, it plays a key role in maintaining the efficiency and performance of the engine.

Conclusion

The Cummins Threaded Plug 3679880 is a critical component in the maintenance and operation of commercial truck engines. Its robust design, compatibility with a wide range of Cummins engines, and essential role in sealing and pressure management make it indispensable for ensuring the efficiency, reliability, and longevity of these vehicles.