4936374
Fuel Connector Adapter
Cummins®

Introduction

The Cummins 4936374 Fuel Connector Adapter is a component designed for use in the fuel systems of commercial trucks. Its purpose is to facilitate a secure and efficient connection between various parts of the fuel delivery system, ensuring that fuel is delivered reliably from the tank to the engine.

Basic Concepts of Fuel Connector Adapters

A Fuel Connector Adapter serves as an intermediary component in the fuel delivery system. It interfaces with fuel lines, filters, and other components to create a continuous and sealed pathway for fuel flow. The adapter ensures that connections are tight and leak-free, which is vital for maintaining the integrity of the fuel system ¹.

Purpose of the 4936374 Fuel Connector Adapter

This Cummins part plays a specific role in the operation of a truck by providing a secure and efficient connection point within the fuel system. It helps maintain the pressure and flow of fuel, which is necessary for the engine to operate effectively. By ensuring a reliable connection, it contributes to the overall efficiency and performance of the truck’s fuel delivery system.

Key Features

The 4936374 Fuel Connector Adapter is constructed from durable materials that are resistant to the corrosive effects of fuel. Its design includes features such as O-rings or gaskets to ensure a tight seal, preventing fuel leaks. The adapter is also engineered to withstand the vibrations and temperature fluctuations common in commercial truck environments, enhancing its longevity and reliability ².

Benefits

The use of the 4936374 Fuel Connector Adapter offers several benefits. It improves the efficiency of the fuel system by ensuring a consistent and leak-free fuel flow. This can lead to better engine performance and fuel economy. Additionally, the adapter reduces the risk of fuel leaks, which can be a safety hazard and lead to environmental concerns. The enhanced connection also contributes to the overall reliability of the truck’s fuel delivery system.

Installation Process

Installing the 4936374 Fuel Connector Adapter requires careful attention to ensure a proper fit and function. The process involves disconnecting the existing fuel lines, cleaning the connection points, and then attaching the adapter using the appropriate tools. It is important to follow the manufacturer’s instructions to ensure that all connections are secure and that the adapter is correctly aligned with other components.

Troubleshooting Common Issues

Common issues with the 4936374 Fuel Connector Adapter may include leaks or connection failures. These can often be traced to improper installation, wear and tear, or damage to the adapter. Troubleshooting steps may involve inspecting the connections for tightness, checking for signs of wear or damage, and ensuring that all components are correctly aligned and secured.

Maintenance Tips

Regular maintenance of the 4936374 Fuel Connector Adapter is important for ensuring long-term reliability and performance. This includes periodic inspection of the connections for signs of wear or leaks, and cleaning the adapter to remove any buildup that could affect its function. Following the manufacturer’s recommended maintenance schedule will help to prevent issues and ensure the adapter continues to perform effectively.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and fuel systems. With a history of innovation and a strong reputation in the commercial truck industry, Cummins is known for producing high-quality, reliable components that meet the demanding requirements of commercial applications. The 4936374 Fuel Connector Adapter is part of Cummins’ commitment to providing durable and efficient solutions for the fuel systems of commercial trucks.

Cummins Fuel Connector Adapter 4936374 Compatibility

The Cummins Fuel Connector Adapter part number 4936374 is designed to fit a variety of Cummins engines, ensuring a secure and reliable connection for fuel delivery. This adapter is crucial for maintaining the integrity of the fuel system and is compatible with the following engines:

ISB/ISD Series

• ISB/ISD 4.5 CM2150 B119
• ISB/ISD 6.7 CM2150 SN

These engines are part of the Cummins ISB/ISD series, known for their robust performance and reliability in various applications, from heavy-duty trucks to industrial machinery.

ISBE Series

• ISBE CM2150
• ISBE4 CM850

The ISBE series engines are designed for high-performance applications, often found in on-highway and vocational trucks. The ISBE4 CM850 is a variant of the ISBE series, tailored for specific performance needs.

QSB Series

• QSB 4.5 CM850 (CM2850)
• QSB 6.7 CM850 (CM2850)
• QSB 7 CM2880 B117

The QSB series engines are engineered for off-highway applications, including agricultural and construction equipment. The QSB 7 CM2880 B117 is a high-output engine, designed for demanding tasks requiring substantial power and durability.

This adapter is engineered to ensure compatibility across these diverse engine models, facilitating seamless integration and operation.

Role of Part 4936374 Fuel Connector Adapter in Engine Systems

The 4936374 Fuel Connector Adapter is an essential component in the integration of fuel systems within engine assemblies. This adapter facilitates the seamless connection between various fuel lines and components, ensuring efficient fuel delivery and system integrity.

Integration with Fuel System Components

Fuel Lines

The adapter plays a key role in connecting fuel lines, which transport fuel from the tank to the engine. It ensures a secure and leak-proof connection, which is vital for maintaining fuel pressure and preventing fuel leaks.

Fuel Pump

In systems where the fuel pump is located within the fuel tank, the adapter connects the pump outlet to the fuel lines leading to the engine. This connection is important for consistent fuel supply under varying engine loads and conditions.

Fuel Filter

The adapter is used to link the fuel filter to both the fuel lines coming from the tank and those leading to the engine. This ensures that filtered fuel is delivered to the engine, protecting it from contaminants.

Fuel Injectors

In fuel-injected engines, the adapter connects the fuel rail to the fuel lines. This ensures that pressurized fuel is evenly distributed to each injector, promoting precise fuel delivery and efficient combustion.

Fuel Pressure Regulator

The adapter also facilitates the connection of the fuel pressure regulator, which maintains consistent fuel pressure within the system. This is important for optimal engine performance and fuel efficiency.

Role in Plumbing Systems

Secure Connections

Within the broader context of engine plumbing, the 4936374 Fuel Connector Adapter ensures all connections are secure and leak-free. This is particularly important in high-pressure fuel systems where any leak can lead to performance issues or safety hazards.

System Integrity

By providing a reliable connection point, the adapter contributes to the overall integrity of the fuel system. This helps in maintaining the designed fuel pressure and flow rates, which are essential for engine performance.

Ease of Maintenance

The adapter allows for easier disconnection and reconnection of fuel lines during maintenance or repairs. This can significantly reduce downtime and make servicing more straightforward.

Conclusion

In summary, the 4936374 Fuel Connector Adapter is a fundamental component in the fuel system, ensuring secure, efficient, and reliable connections between various fuel system components. Its role in maintaining system integrity and facilitating maintenance makes it an indispensable part of engine systems.