3910150
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3910150 Fuel Supply Tube is a component designed for use in the fuel systems of heavy-duty trucks. Its primary role is to facilitate the transfer of fuel from the tank to the engine, ensuring a consistent and reliable fuel supply that supports optimal engine performance ².

Purpose and Function

This Cummins part plays a role in the fuel system by delivering fuel from the tank to the engine. It ensures a steady flow of fuel, which is vital for maintaining engine performance under various operating conditions. By providing a direct and unobstructed pathway for fuel, it helps in achieving efficient combustion and overall engine reliability.

Key Features

The 3910150 is constructed from durable materials that are resistant to the corrosive effects of diesel fuel. Its design includes features that enhance its longevity and performance, such as reinforced connections and a smooth interior that minimizes fuel flow resistance. The tube is engineered to withstand the pressures and temperatures encountered in heavy-duty truck fuel systems ¹.

Benefits

Using the Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent fuel supply to the engine. The tube’s reliable construction enhances the overall reliability of the fuel system. Additionally, it is specifically designed for compatibility with Cummins engines, ensuring seamless integration and performance.

Installation Process

Installing the 3910150 requires careful attention to detail. The process involves disconnecting the old tube, ensuring the fuel system is depressurized, and then fitting the new tube into place. Tools such as wrenches and possibly a fuel line disconnect tool may be required. It is important to follow the manufacturer’s instructions to ensure a secure and leak-free connection.

Common Issues and Troubleshooting

Typical problems with Fuel Supply Tubes can include leaks or blockages. Leaks may occur at connection points or due to damage to the tube itself, while blockages can result from debris or fuel contaminants. Troubleshooting involves inspecting the tube and connections for signs of wear or damage, and cleaning or replacing components as necessary to resolve issues.

Maintenance Tips

Regular maintenance of the 3910150 is important for prolonging its lifespan. This includes periodic inspections for signs of wear, corrosion, or leaks. Cleaning the tube and its connections can help prevent blockages. Following the manufacturer’s recommended maintenance schedule ensures the tube continues to perform effectively.

Safety Considerations

When working with the Fuel Supply Tube, it is important to adhere to safety protocols. This includes handling fuel with care to avoid spills and ensuring that any work on the fuel system is conducted in a well-ventilated area. Recognizing and mitigating potential hazards, such as fuel leaks or pressurized fuel lines, is crucial for safe maintenance and repair practices.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the manufacturing of diesel engines and components, including fuel system parts like the 3910150 ².

Cummins Fuel Supply Tube 3910150 in Engine Applications

The 3910150 is a component in the fuel delivery system of certain Cummins engines. This part is designed to ensure the efficient and reliable transfer of fuel from the fuel tank to the engine’s fuel injection system.

Application in 4B3.9 Engines

In the 4B3.9 engine, the Fuel Supply Tube plays a pivotal role in maintaining the integrity of the fuel supply line. This engine is known for its robust performance and reliability, often used in heavy-duty applications. The tube ensures that fuel is delivered consistently, which is crucial for the engine’s operation under varying load conditions.

Application in 6B5.9 Engines

Similarly, in the 6B5.9 engine, the Fuel Supply Tube is integral to the fuel delivery mechanism. This engine is another example of Cummins’ engineering excellence, often utilized in demanding environments. The tube’s design allows for smooth fuel flow, which is essential for the engine’s performance and longevity.

Grouping of Engines

Both the 4B3.9 and 6B5.9 engines benefit from the use of the Cummins Fuel Supply Tube. These engines, while distinct in their specifications and applications, share a common requirement for a reliable fuel supply system. The use of this part across these engines highlights its versatility and importance in ensuring optimal engine performance.

Importance of the Fuel Supply Tube

The Fuel Supply Tube is not just a simple connector; it is engineered to withstand the rigors of continuous use in demanding conditions. Its design ensures minimal fuel leakage and maintains the pressure required for efficient fuel injection. This is crucial for the overall efficiency and reliability of the engine.

Role of Part 3910150 Fuel Supply Tube in Engine Systems

The 3910150 is an integral component in the fuel delivery system of various engine setups. Its primary function is to transport fuel from the fuel tank to the engine’s fuel injection system or carburetor. This ensures a consistent and reliable fuel supply, which is essential for the engine’s performance and efficiency.

Integration with Lift Pump

When integrated with a lift pump, the 3910150 works in tandem to maintain the necessary fuel pressure. The lift pump draws fuel from the tank and sends it through the tube to the engine. This setup is particularly important in systems where the fuel tank is located below the engine, as the lift pump compensates for the gravitational pull, ensuring a steady fuel flow.

Coordination with Main Pump

In systems equipped with a main pump, the Fuel Supply Tube connects the output of the lift pump (if present) to the input of the main pump. The main pump then pressurizes the fuel to the levels required by the fuel injectors or carburetor. This pressurized fuel is then distributed to the combustion chambers, where it is mixed with air and ignited to produce power.

Fuel Transfer Applications

In fuel transfer applications, the 3910150 is used to move fuel between different tanks or systems. This could involve transferring fuel from a secondary tank to the primary tank or from one vehicle to another. The tube’s durable construction and precise fitting ensure that fuel is transferred efficiently and without leaks, maintaining the integrity of the fuel system.

Overall System Functionality

The seamless integration of the 3910150 with these components ensures that the engine receives a consistent and pressurized fuel supply. This reliability is vital for the engine’s performance, whether it’s powering a vehicle, machinery, or any other application where consistent fuel delivery is required.

Conclusion

The Cummins 3910150 Fuel Supply Tube is a vital component in the fuel systems of heavy-duty trucks and engines. Its design and construction ensure a reliable and efficient fuel supply, contributing to the overall performance and reliability of the engine. Regular maintenance and adherence to safety protocols are essential for maximizing the lifespan and effectiveness of this part.