3694742
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3694742 Fuel Supply Tube is a critical component in the fuel delivery system of commercial trucks, designed to ensure a consistent and reliable supply of fuel to the engine. This part plays a significant role in the truck’s operation and performance by facilitating the delivery of fuel from the tank to the engine ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube, such as the Cummins 3694742, is a conduit within the fuel system that transports fuel from the tank to the engine. It is essential for maintaining the fuel’s flow and pressure, which are vital for the engine’s combustion process. The efficiency and reliability of this component directly influence the overall performance and efficiency of the truck’s engine ².

Purpose of the Cummins 3694742 Fuel Supply Tube

The primary function of this Cummins part is to ensure a steady flow of fuel to the engine, which is necessary for consistent engine performance. By maintaining the fuel’s pressure and flow, it contributes to the engine’s ability to operate efficiently under various conditions ³.

Key Features

The Cummins 3694742 is constructed from durable materials that are resistant to the corrosive effects of fuel. Its design includes features that enhance its performance and longevity, such as reinforced connections and a smooth interior to reduce flow resistance. These characteristics are intended to ensure reliable fuel delivery and withstand the demanding conditions of commercial truck operation.

Benefits

Utilizing the Cummins 3694742 can lead to improved fuel efficiency, as it helps maintain optimal fuel flow and pressure. This can result in enhanced engine performance and reliability, contributing to the overall effectiveness of the truck’s operation.

Installation Process

Installing this part requires careful attention to ensure a proper fit and seal. The process involves disconnecting the old tube, cleaning the connection points, and securing the new tube in place with the appropriate fittings. Tools such as wrenches and sealant may be necessary, and it is important to follow manufacturer guidelines to ensure correct installation.

Maintenance Tips

To ensure the longevity and optimal performance of the Cummins 3694742, regular inspections are recommended. This includes checking for signs of wear, leaks, or damage. Cleaning the tube and its connections as part of routine maintenance can help prevent issues and ensure consistent fuel delivery.

Troubleshooting Common Issues

Common problems with the Cummins 3694742 may include leaks or blockages. Troubleshooting these issues involves inspecting the tube and connections for damage or debris. Addressing these problems promptly can help maintain the fuel system’s integrity and the engine’s performance.

Compatibility and Applications

The Cummins 3694742 is designed for specific types of trucks and engine models. Its applications are tailored to meet the demands of these vehicles, ensuring compatibility and effective fuel delivery.

Safety Considerations

When handling, installing, or maintaining the Cummins 3694742, it is important to observe safety guidelines. This includes working in a well-ventilated area, wearing appropriate personal protective equipment, and following all manufacturer instructions to prevent accidents or injuries.

About Cummins

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality components and commitment to innovation. With a history of producing reliable and efficient parts, Cummins continues to be a trusted name in the field of automotive and heavy-duty truck parts.

Role of Part 3694742 Fuel Supply Tube in Engine Systems

The 3694742 Fuel Supply Tube is an integral component in the efficient operation of engine systems, facilitating the seamless transfer of fuel from the fuel tank to the engine’s fuel injection system. This tube works in conjunction with several key components to ensure optimal engine performance.

Integration with the Fuel Transfer Pump

The Fuel Supply Tube is directly connected to the Fuel Transfer Pump, which is responsible for moving fuel from the tank to the engine. The tube serves as a conduit, allowing the pump to draw fuel efficiently. This connection ensures that the pump receives a consistent flow of fuel, which is essential for maintaining the pump’s performance and longevity.

Collaboration with the Primer

In systems equipped with a Primer, the Fuel Supply Tube plays a supportive role. The Primer is used to remove air from the fuel lines, ensuring that the fuel system operates without interruptions. The Fuel Supply Tube aids in this process by providing a clear path for fuel to flow, which helps the Primer effectively purge air from the system. This collaboration is vital for achieving a smooth start-up and consistent engine operation.

Contribution to the Fuel System

Within the broader Fuel System, the Fuel Supply Tube is a fundamental link between the fuel tank and the fuel injection components. It ensures that fuel is delivered under the right pressure and in the correct quantity to the injectors. This reliable fuel delivery is essential for the precise operation of the fuel injection system, contributing to overall engine efficiency and performance.

The Fuel Supply Tube’s role in these components underscores its importance in maintaining the integrity and functionality of the engine’s fuel delivery process.

Conclusion

The Cummins 3694742 Fuel Supply Tube is a vital component in the fuel delivery system of commercial trucks, ensuring a consistent and reliable supply of fuel to the engine. Its design, features, and role in the engine system contribute to the overall performance and efficiency of the truck. Regular maintenance and proper installation are key to ensuring the longevity and optimal performance of this part.