3931084
Retainer Plug
Cummins®

Introduction

The Cummins Retainer Plug 3931084 is a component designed for use in commercial trucks. It serves a specific function within the truck’s engine or transmission system, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and operation is key to maintaining the performance standards of heavy-duty trucks.

Basic Concepts of Retainer Plugs

Retainer plugs are mechanical components used to secure or seal parts within a system. In the context of heavy-duty trucks, they play a role in maintaining the integrity of the engine or transmission system by preventing the loss of fluids or the entry of contaminants. They operate by fitting into designated ports or openings, ensuring that the system remains closed and functions as intended ⁵.

Purpose of the Cummins Retainer Plug 3931084

The Cummins Retainer Plug 3931084 is specifically designed to fit into certain ports within a truck’s engine or transmission system. Its role is to seal these ports, thereby maintaining system pressure and preventing fluid leaks. This plug ensures that the system operates within its designed parameters, contributing to the truck’s overall performance and longevity ¹.

Key Features

The Cummins Retainer Plug 3931084 is characterized by its durable material composition, which is resistant to the high temperatures and pressures found within engine and transmission systems. Its design includes precise dimensions to ensure a snug fit within the designated ports. Additionally, it may feature unique attributes such as anti-corrosion coatings or enhanced sealing capabilities to improve its performance and longevity ².

Benefits of Using the Cummins Retainer Plug 3931084

Incorporating the Cummins Retainer Plug 3931084 into truck maintenance and operation offers several advantages. Its durable construction and precise design contribute to the system’s efficiency by ensuring a secure seal. This, in turn, helps maintain system pressure and prevent fluid leaks, leading to improved reliability and performance of the truck ³.

Installation Process

Installing the Cummins Retainer Plug 3931084 requires careful attention to ensure a proper fit and seal. The process involves cleaning the port to remove any debris, inserting the plug into the port, and securing it in place. Tools such as wrenches may be required, and it is important to follow manufacturer guidelines to avoid damage to the plug or the system ⁴.

Troubleshooting Common Issues

Common issues with retainer plugs may include leaks or difficulty in installation or removal. These problems can arise from incorrect sizing, damage to the plug or port, or contamination. Solutions may involve inspecting the plug and port for damage, ensuring the correct size is used, and cleaning the area to remove contaminants ⁵.

Maintenance Tips

Regular maintenance of the Cummins Retainer Plug 3931084 is important for ensuring its longevity and optimal performance. This includes periodic inspection for signs of wear or damage, cleaning the plug and port to remove any buildup, and replacing the plug if necessary. Adhering to recommended inspection intervals and care instructions will help maintain the efficiency and reliability of the truck’s engine or transmission system ¹.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins serves commercial truck, bus, construction, agricultural, and industrial markets. The company’s commitment to excellence is reflected in its wide range of products, including the Cummins Retainer Plug 3931084, designed to meet the demanding requirements of heavy-duty applications ².

Cummins Retainer Plug 3931084 Compatibility

The Cummins Retainer Plug part number 3931084 is designed to fit a variety of Cummins engines, ensuring a secure and reliable connection. Here is a detailed overview of the engines with which this part is compatible:

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

ISL Series Engines

• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138

L Series Engines

• L GAS PLUS CM556
• L8.9
• L8.9 CM2670 L134C
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B
• L9.3 L105
• L9.5 L117

QSC Series Engines

• QSC8.3 CM2880 C102

This part is engineered to meet the specific requirements of these engines, providing a critical function in maintaining the integrity of the engine’s systems. The compatibility across various series highlights the versatility and robustness of the 3931084 Retainer Plug in different engine configurations ⁴.

Role of Part 3931084 Retainer Plug in Engine Systems

The Retainer Plug, identified by part number 3931084, is an essential component in various engine systems, ensuring the efficient operation and longevity of the engine. Its role can be observed in the following components:

Cooler Systems

In cooler systems, particularly those designed for engine oil, the Retainer Plug plays a significant role. It secures the connections within the cooler, preventing leaks and ensuring that the oil is effectively cooled before it returns to the engine. This is vital for maintaining optimal engine temperature and performance ⁵.

Engine Oil Systems

Within the engine oil system, the Retainer Plug is utilized to maintain the integrity of connections and fittings. It ensures that the oil flow is consistent and unimpeded, which is essential for the lubrication of moving parts and the reduction of friction within the engine ¹.

Head Assemblies

In the context of head assemblies, such as the oil filter cooler head or the lubricating oil filter head, the Retainer Plug is employed to secure the filter elements in place. This ensures that the filtration process is effective, removing contaminants from the oil and prolonging the life of the engine components ².

Oil Filter Cooler

The oil filter cooler often incorporates the Retainer Plug to secure the cooler’s components, ensuring that the oil is both filtered and cooled efficiently. This dual function is important for maintaining the oil’s quality and the engine’s performance ³.

Lubricating Oil Filter Kit

In lubricating oil filter kits, the Retainer Plug is used to ensure that all components are securely fastened. This is important for the kit’s overall effectiveness in filtering the oil and protecting the engine from wear and damage ⁴.

Mounting Kits

Finally, in mounting kits for various engine components, the Retainer Plug is used to secure fittings and connections. This ensures that the components are properly installed and that the engine system operates smoothly and efficiently ⁵.

Conclusion

In summary, the Retainer Plug (part 3931084) is a versatile component that enhances the functionality and reliability of various engine systems. Its role in securing connections and preventing leaks is fundamental to the efficient operation of these systems. Regular maintenance and proper installation are crucial for ensuring the longevity and performance of the Cummins Retainer Plug 3931084 in heavy-duty truck applications.