3920739
Fuel Transfer Tube
Cummins®

The Cummins Fuel Transfer Line, part number 3920739, is a component designed to facilitate the efficient transfer of fuel within the fuel system of commercial trucks. Its role is significant in ensuring that the engine receives a consistent and reliable supply of fuel, which is vital for the operation and performance of the vehicle ¹.

Basic Concepts of Fuel Transfer Lines

A fuel transfer line is a conduit that moves fuel from one part of the fuel system to another. It operates by maintaining a continuous flow of fuel under pressure, ensuring that the engine receives the necessary amount of fuel for combustion. This component is integral to the fuel system, as it helps maintain the pressure and flow required for efficient engine operation ².

Purpose of the 3920739 Fuel Transfer Line

The 3920739 Fuel Transfer Line plays a role in the fuel delivery system by transferring fuel from the tank to the engine. It ensures that fuel is delivered at the correct pressure and volume, which contributes to the overall performance and efficiency of the engine. By maintaining a stable fuel supply, it helps in achieving optimal engine operation ³.

Key Features of the 3920739 Fuel Transfer Line

The 3920739 Fuel Transfer Line is constructed using high-quality materials that provide durability and resistance to the corrosive effects of fuel. Its design includes features that enhance its performance, such as reinforced connections and a robust structure that can withstand the pressures and temperatures within the fuel system.

Benefits of Using the 3920739 Fuel Transfer Line

Utilizing the 3920739 Fuel Transfer Line offers several advantages, including improved fuel efficiency due to its efficient design, enhanced reliability through its durable construction, and increased longevity compared to other fuel transfer lines. These benefits contribute to the overall performance and cost-effectiveness of the vehicle.

Installation and Compatibility

Proper installation of the 3920739 Fuel Transfer Line involves following specific guidelines to ensure it functions correctly within the fuel system. It is designed to be compatible with a range of truck models and engine types, ensuring that it can be integrated into various systems without issues.

Maintenance and Troubleshooting

Regular maintenance of the 3920739 Fuel Transfer Line is recommended to ensure its continued efficiency and longevity. This includes checking for leaks, ensuring connections are secure, and inspecting the line for any signs of wear or damage. Common issues may include blockages or leaks, which can often be addressed through routine checks and timely repairs.

Safety Considerations

When working with the 3920739 Fuel Transfer Line, it is important to observe safety guidelines to prevent accidents. This includes handling fuel systems with care, ensuring that all connections are properly sealed to prevent leaks, and following manufacturer recommendations for installation and maintenance to avoid malfunctions.

Environmental Impact

The 3920739 Fuel Transfer Line contributes to reducing emissions and improving fuel efficiency, which helps minimize the environmental impact of commercial trucks. By ensuring efficient fuel delivery, it plays a part in enhancing the overall environmental performance of the vehicle.

Cummins: A Brief Overview

Cummins Inc. is a renowned manufacturer of diesel engines and related technologies, with a history of innovation and quality. The company is committed to developing products that meet the demanding requirements of commercial applications, ensuring reliability and performance in various operating conditions.

Cummins Fuel Transfer Line Part 3920739

The Cummins Fuel Transfer Line part 3920739 is a critical component in the fuel system of various Cummins engines. This part is designed to ensure the efficient and reliable transfer of fuel from the fuel tank to the engine, maintaining the necessary pressure and flow required for optimal engine performance.

Compatibility with Cummins Engines

The part 3920739 is engineered to fit seamlessly with several Cummins engine models, including but not limited to:

• 4B3.9: This engine model benefits from the precise engineering of the fuel transfer line, ensuring that fuel is delivered consistently and without interruption. The part’s design allows for easy installation and maintenance, making it a preferred choice for technicians and fleet managers.

• Other Cummins Engines: While the 4B3.9 is highlighted, the part 3920739 is also compatible with a range of other Cummins engines. Its universal design ensures that it can be used across various models, providing a reliable solution for fuel transfer needs.

The Cummins Fuel Transfer Line part 3920739 is a testament to the brand’s commitment to quality and performance. Its compatibility with multiple engine models underscores its versatility and importance in maintaining the integrity of the fuel system.

Role of Part 3920739 Fuel Transfer Line in Engine Systems

The Part 3920739 Fuel Transfer Line is an essential component in the fuel delivery system of an engine, facilitating the seamless transfer of fuel between various components. Its primary function is to ensure a consistent and reliable flow of fuel from the Base Fuel Pump to the Bosch Injection Pump.

Integration with Base Fuel Pump

The Base Fuel Pump is responsible for drawing fuel from the fuel tank and pressurizing it to the required levels for efficient engine operation. The Fuel Transfer Line connects directly to the outlet of the Base Fuel Pump, ensuring that the pressurized fuel is efficiently channeled without any significant loss in pressure or flow rate. This connection is vital for maintaining the pump’s performance and ensuring that the fuel reaches the next stage of the system under optimal conditions.

Connection to Bosch Injection Pump

Once the fuel has been pressurized by the Base Fuel Pump, it is transferred via the Fuel Transfer Line to the Bosch Injection Pump. The Bosch Injection Pump is a high-precision component that meters and injects fuel into the engine’s combustion chambers. The Fuel Transfer Line must be capable of handling the specific pressure and flow requirements of the Bosch Injection Pump to ensure that it receives a steady and consistent supply of fuel. This reliable fuel delivery is essential for the Bosch Injection Pump to operate efficiently, providing the precise fuel metering needed for optimal engine performance and emissions control.

Ensuring System Integrity

The Fuel Transfer Line plays a significant role in maintaining the integrity of the fuel delivery system. It must be designed to withstand the pressures and temperatures within the system, as well as resist any potential fuel contaminants. This ensures that the fuel remains clean and at the correct pressure as it travels from the Base Fuel Pump to the Bosch Injection Pump, contributing to the overall efficiency and reliability of the engine.

Conclusion

The Cummins Fuel Transfer Line, part number 3920739, is a vital component in the fuel system of commercial trucks. Its efficient design, durable construction, and compatibility with various engine models make it an essential part of ensuring reliable and efficient fuel delivery. Regular maintenance and adherence to safety guidelines are crucial for maximizing the performance and longevity of this Cummins part.