4940671
Fuel Supply Tube
Cummins®

The Cummins 4940671 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. This part is integral to the overall performance and efficiency of the vehicle’s engine.

Purpose and Function

This Cummins part plays a role in the fuel system by delivering fuel from the tank to the engine. It ensures that fuel flows consistently and maintains the necessary pressure for optimal engine performance. This component is designed to handle the demands of heavy-duty applications, providing a stable fuel supply under various operating conditions.

Key Features

The 4940671 Fuel Supply Tube is constructed from high-quality materials that offer durability and resistance to the harsh conditions found in heavy-duty truck environments. Its design includes features that enhance performance, such as precise engineering to ensure a secure fit and efficient fuel transfer. The tube is also designed to withstand the pressures and temperatures associated with diesel fuel systems.

Benefits

Using this part offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent fuel flow, which can lead to better overall engine performance ¹. The tube’s reliability reduces the likelihood of fuel system failures, enhancing the vehicle’s uptime. Additionally, it is compatible with various Cummins engine models, making it a versatile choice for fleet managers and maintenance professionals.

Installation and Compatibility

Proper installation of this part involves following manufacturer guidelines to ensure a secure and efficient connection within the fuel system. This may include using specific tools and adhering to recommended procedures. The tube is designed to be compatible with a range of Cummins engine models, providing flexibility for users operating different types of heavy-duty trucks.

Maintenance and Troubleshooting

To ensure the longevity and optimal performance of the 4940671 Fuel Supply Tube, regular maintenance is recommended. This includes inspecting the tube for signs of wear or damage, checking connections for leaks, and ensuring that all components are securely fastened. Common issues such as leaks or blockages can often be addressed through routine inspections and timely repairs.

Common Issues and Solutions

Frequent problems associated with the 4940671 Fuel Supply Tube may include leaks at connection points or blockages within the tube. Solutions to these issues can range from tightening connections to replacing damaged sections of the tube. Regular maintenance and inspections can help identify and address these problems before they lead to more significant issues.

Safety Considerations

When working with this part or any fuel system component, it is important to follow safety practices. This includes ensuring that the fuel system is depressurized before beginning any work, using appropriate personal protective equipment, and handling fuel with care to avoid spills and contamination. Proper system pressure should be verified before starting the engine to ensure safe operation.

Cummins 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 a commitment to quality, Cummins has established a strong reputation in the heavy-duty truck industry. The company’s products are known for their reliability, performance, and efficiency, making them a preferred choice for commercial vehicle operators worldwide ².

Cummins Fuel Supply Tube 4940671 Compatibility

The Cummins Fuel Supply Tube part number 4940671 is designed to fit seamlessly within a variety of engine configurations. This component is integral to the proper functioning of the fuel system, ensuring that fuel is delivered efficiently and safely to the engine components.

Engine Compatibility

• 6B5.9 Series: The 4940671 Fuel Supply Tube is specifically engineered to integrate with the 6B5.9 engine series. This engine is known for its robust performance and reliability, often utilized in heavy-duty applications. The tube’s design ensures it can withstand the operational stresses and maintain the integrity of the fuel delivery system.

• Other Cummins Engines: While the primary focus here is on the 6B5.9 series, it is important to note that the 4940671 Fuel Supply Tube is also compatible with other Cummins engine models. This versatility makes it a valuable component for technicians and fleet managers who operate a diverse range of Cummins engines.

The design and material of the 4940671 Fuel Supply Tube are optimized to meet the demands of high-performance engines, ensuring durability and consistent performance across different engine types.

Role of Part 4940671 Fuel Supply Tube in Engine Systems

The 4940671 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. It is responsible for transporting fuel from the fuel tank to the fuel transfer pump, ensuring a consistent and reliable fuel supply to the engine.

Integration with Fuel Transfer Pump

The Fuel Supply Tube interfaces directly with the fuel transfer pump. This connection is vital for the pump to draw fuel efficiently from the tank. The tube’s design ensures minimal resistance, allowing the pump to operate smoothly and maintain optimal fuel flow rates. This consistent fuel delivery is necessary for the pump to function correctly, thereby supporting the engine’s performance.

Interaction with Fuel Transfer Components

In systems where a fuel transfer component is utilized, the Fuel Supply Tube plays a significant role. It ensures that fuel is adequately transferred from the main tank to any auxiliary tanks or directly to the engine. This transfer is essential in setups where fuel needs to be moved between different compartments or systems within the engine assembly.

Supporting the Pump

The Fuel Supply Tube also supports the overall operation of the pump. By providing a dedicated pathway for fuel, it helps in reducing the workload on the pump, allowing it to focus on pressurizing and delivering fuel to the engine’s injection system. This support is particularly important in high-performance engines where fuel demand is substantial.

Ensuring Reliable Fuel Delivery

In any engine system, the reliability of fuel delivery is paramount. The Fuel Supply Tube contributes to this reliability by offering a secure and efficient route for fuel to travel from the tank to the pump. This ensures that the engine receives a steady supply of fuel, which is essential for consistent performance and efficiency.

Enhancing System Efficiency

By facilitating a smooth and uninterrupted fuel flow, the Fuel Supply Tube enhances the overall efficiency of the engine system. It minimizes the risk of fuel starvation, which can lead to engine misfires or stalls. This component is, therefore, a key player in maintaining the engine’s operational integrity.

Conclusion

The Cummins 4940671 Fuel Supply Tube is a critical component in the fuel delivery system of heavy-duty trucks, ensuring consistent and reliable fuel supply to the engine. Its high-quality construction, compatibility with various Cummins engine models, and role in enhancing engine performance and efficiency make it a valuable asset for fleet managers and maintenance professionals. Regular maintenance and adherence to safety practices are essential for maximizing the longevity and performance of this part.