3964646
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3964646 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks. It ensures a consistent and reliable fuel supply from the tank to the engine, which is essential for the engine’s performance and efficiency.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube serves as a conduit for transporting fuel from the fuel tank to the engine. It ensures that fuel travels under pressure, maintaining the necessary fuel delivery for engine operation. The role of a fuel supply tube is vital in ensuring proper fuel delivery, which directly impacts the engine’s performance and efficiency ¹.

Purpose and Role of the 3964646 Fuel Supply Tube

This Cummins part is designed to ensure consistent fuel flow and pressure in heavy-duty trucks. It connects the fuel tank to the engine, providing a direct route for fuel. This component maintains the required fuel pressure and flow rate, which are essential for the engine’s combustion process and overall performance ².

Key Features

The 3964646 is constructed from durable materials resistant to fuel corrosion. Its design includes reinforced connections and a smooth interior to reduce flow resistance. These features enhance the tube’s performance and longevity, allowing it to withstand the demands of heavy-duty truck operation ³.

Benefits of Using the Cummins 3964646 Fuel Supply Tube

Using this part offers several advantages. It improves fuel efficiency by ensuring a consistent fuel supply to the engine. The tube’s design and construction enhance the reliability of the fuel system, reducing the likelihood of leaks or failures. Its compatibility with Cummins engines ensures optimal performance and integration within the fuel system.

Installation and Compatibility

Proper installation of this part involves securing it within the fuel system, ensuring all connections are tight and secure. It is designed to be compatible with various Cummins engine models, facilitating its use across a range of heavy-duty truck applications.

Maintenance and Troubleshooting

Maintaining the 3964646 includes regular inspections for wear, damage, or leaks. Cleaning procedures may involve flushing the tube to remove contaminants. Troubleshooting common issues, such as leaks or blockages, involves identifying the problem source and applying the appropriate solution, which may include repairs or replacement.

Common Issues and Solutions

Frequent problems with fuel supply tubes include leaks and blockages. Solutions range from tightening connections or replacing damaged sections to cleaning the tube or fuel system to remove contaminants.

Safety Considerations

When working with the 3964646, it is important to follow safety precautions. This includes wearing appropriate personal protective equipment, ensuring the fuel system is depressurized before maintenance, and following manufacturer guidelines for installation and maintenance.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. The 3964646 is part of Cummins’ extensive lineup of components designed to enhance the performance and efficiency of heavy-duty trucks.

Cummins Engine Compatibility with Fuel Supply Tube Part 3964646

The 3964646 is designed to fit seamlessly within a range of Cummins engines, ensuring optimal fuel delivery and performance. It is engineered to meet the specific needs of the ISB CM550 and QSB5.9 44 CM550 engines, providing a reliable connection for fuel supply.

For the ISB CM550 engine, the 3964646 is integral to maintaining the efficiency and reliability of the fuel system. Its precise fit ensures consistent fuel delivery, which is essential for the engine’s performance and longevity.

Similarly, the QSB5.9 44 CM550 engine benefits from the use of the 3964646. This part is designed to integrate smoothly with the engine’s architecture, ensuring that the fuel supply remains uninterrupted and efficient. The compatibility of this part with both engines highlights Cummins’ commitment to providing high-quality components that enhance engine performance and durability.

Role of Part 3964646 Fuel Supply Tube in Engine Systems

The Fuel Supply Tube (part 3964646) is an integral component in the fuel delivery system of an engine, ensuring a consistent and reliable flow of fuel from the fuel tank to the engine’s fuel injection system or carburetor. This component interfaces with several key elements within the engine system, each playing a specific role in the overall functionality and performance of the engine.

Integration with Plumbing

The Fuel Supply Tube is designed to connect seamlessly with the engine’s fuel plumbing. This includes the fuel lines that run from the fuel tank to the engine compartment. The tube’s precise fit and secure connections are essential for maintaining the integrity of the fuel system, preventing leaks, and ensuring that fuel is delivered under the correct pressure and flow rate. The tube’s material and design are tailored to withstand the pressures and temperatures within the fuel system, providing a durable and reliable connection point.

Interaction with Fuel Filter

Another significant interaction occurs between the Fuel Supply Tube and the fuel filter. The tube delivers fuel from the tank to the filter, where contaminants and impurities are removed before the fuel reaches the engine. This ensures that only clean fuel enters the engine, protecting sensitive components such as fuel injectors and carburetors from damage. The Fuel Supply Tube’s role in this process is to provide a consistent and uninterrupted flow of fuel to the filter, enhancing the filter’s efficiency and prolonging its lifespan.

Ensuring System Efficiency

By facilitating a smooth and reliable transfer of fuel, the Fuel Supply Tube contributes to the overall efficiency of the engine system. Its integration with the fuel plumbing and fuel filter ensures that the engine receives a steady supply of clean fuel, which is essential for optimal combustion and performance. This component’s design and functionality are critical in maintaining the engine’s efficiency, reliability, and longevity.

Conclusion

The Cummins 3964646 Fuel Supply Tube is a vital component in the fuel systems of heavy-duty trucks. Its role in ensuring a consistent and reliable fuel supply is crucial for the engine’s performance and efficiency. With its durable construction, compatibility with various Cummins engines, and ease of installation, this part enhances the reliability and efficiency of the fuel system, contributing to the overall performance of heavy-duty trucks.