3918640
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3918640 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks. It ensures a consistent and reliable fuel supply to the engine under various operating conditions.

Purpose and Function

This part facilitates the transfer of fuel from the tank to the engine, maintaining a steady flow essential for engine performance and efficiency. It is designed to handle the pressures and temperatures associated with fuel transport, contributing to the overall reliability of the fuel system ¹.

Design and Construction

The Cummins 3918640 is constructed from materials resistant to fuel corrosion and high pressures. It may include protective coatings or reinforcements to enhance durability. The tube’s design features optimize fuel flow and minimize blockages or leaks, ensuring effective performance over time ².

Integration within the Fuel System

This Cummins part connects the fuel tank to the fuel filter or injection system, ensuring controlled fuel delivery to the engine. Its integration with other components is crucial for the seamless operation of the fuel system, working in concert with filters, pumps, and injectors to maintain engine performance ³.

Benefits of Using Cummins 3918640 Fuel Supply Tube

The 3918640 offers improved fuel efficiency, reduces the risk of fuel leaks, and enhances the reliability of the truck’s fuel delivery system, leading to better engine performance and longevity.

Common Issues and Troubleshooting

Typical problems include blockages from contaminants or leaks due to wear and tear. Regular inspections and maintenance practices, such as cleaning the tube and securing connections, can prevent these issues. Repair or replacement may be necessary if problems are detected.

Maintenance and Care

Regular inspection and maintenance are vital for optimal performance and longevity. Checking for wear, corrosion, and secure connections can help identify potential issues before they lead to more significant problems.

Safety Considerations

Proper installation and maintenance of the Fuel Supply Tube are crucial to prevent fuel system failures and ensure safe truck operation. Handling fuel system components with care and following manufacturer guidelines can help maintain safe and efficient operation.

Cummins Corporation Overview

Cummins Inc. is a global leader in designing, manufacturing, and distributing engines, filtration, and power generation products. The company’s commitment to quality and innovation is evident in its product offerings, designed to meet the demanding requirements of heavy-duty applications.

Cummins Fuel Supply Tube 3918640 Compatibility

Engine Compatibility

The Fuel Supply Tube 3918640 is compatible with Cummins engines, including the 4B3.9 and 6B5.9 models. Its design ensures smooth operation, preventing leaks and maintaining consistent fuel pressure.

Installation and Usage

Following manufacturer guidelines during installation ensures proper fitment and functionality. The tube is typically integrated during assembly or maintenance, allowing for easy replacement and contributing to engine longevity and reliability.

Importance of the Fuel Supply Tube

The 3918640 plays a vital role in engine performance by providing a secure and efficient fuel pathway. Regular inspection and maintenance are recommended to prevent issues from wear and tear or damage.

Role of Part 3918640 Fuel Supply Tube in Engine Systems

Integration with Fuel Filter Plumbing

The Fuel Supply Tube connects directly to the fuel filter, ensuring contaminants are removed before fuel reaches the engine. Its precise fit and secure connection are essential for maintaining the integrity of the fuel filtration process.

Role in Fuel Pump Conversion Kits

The tube adapts the fuel delivery system to new pump configurations, ensuring a consistent fuel supply even with upgrades or modifications to the fuel pump.

General Plumbing Applications

The Fuel Supply Tube connects various parts of the fuel system, including the fuel tank, fuel lines, and fuel injectors, maintaining a cohesive and efficient fuel delivery system.

Interaction with Fuel Filter

Its connection to the fuel filter ensures fuel is delivered under the correct pressure and flow rate, vital for the filter’s effectiveness in trapping impurities and safeguarding the engine’s internal components.

Conclusion

The Cummins 3918640 Fuel Supply Tube is a key component in the fuel delivery system, essential for maintaining engine performance and longevity. Its compatibility with various engine models and integration with fuel system components underscore its importance in ensuring a reliable and efficient fuel supply.