3942260
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3942260 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks, designed to facilitate the efficient transfer of fuel from the tank to the engine. Manufactured by Cummins Inc., a leader in diesel engine technology, this part ensures optimal performance and reliability in demanding applications ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit within the fuel system responsible for transporting fuel from the storage tank to the engine. Its function is vital to the operation of a diesel engine, ensuring a consistent and reliable supply of fuel under various operating conditions. The efficiency and reliability of the fuel supply tube directly influence the engine’s performance, fuel economy, and emissions ².

Purpose of the Cummins 3942260 Fuel Supply Tube

The Cummins 3942260 Fuel Supply Tube plays a role in the fuel system by delivering fuel from the tank to the engine. This component is designed to withstand the pressures and temperatures associated with diesel fuel systems, ensuring a steady fuel flow that supports engine operation. Its design contributes to the overall efficiency and reliability of the truck’s fuel system ³.

Key Features

The Cummins 3942260 is constructed from materials that offer durability and resistance to the corrosive effects of diesel fuel. Its design includes features that enhance its efficiency and longevity, such as reinforced connections and a smooth interior that minimizes fuel flow resistance. These attributes contribute to its performance and reliability in heavy-duty applications.

Benefits

Utilizing the Cummins 3942260 offers several advantages, including improved fuel delivery efficiency, which can lead to enhanced engine performance. Its design and construction contribute to the reliability of the fuel system, ensuring consistent operation across a range of conditions. These benefits support the overall efficiency and durability of the truck’s engine.

Installation and Compatibility

Proper installation of the Cummins 3942260 is important for ensuring optimal performance and compatibility with specific Cummins engine models. Attention to manufacturer guidelines during installation helps maintain the integrity of the fuel system and ensures the tube functions as intended within the engine’s operating environment.

Maintenance and Troubleshooting

Routine maintenance of the Cummins 3942260 involves inspecting for signs of wear, leaks, or damage that could affect its performance. Common issues may include blockages or deterioration of the tube material. Troubleshooting these problems often involves cleaning or replacing the tube to restore efficient fuel delivery. Following recommended maintenance procedures helps ensure the continued reliable operation of the fuel system.

Safety Considerations

When working with the Cummins 3942260, it is important to observe safety protocols due to the flammable nature of diesel fuel. This includes ensuring proper ventilation during maintenance or repair procedures and handling the fuel and components with care to prevent accidents. Adhering to these safety measures protects both the technician and the equipment.

Environmental Impact

The use of the Cummins 3942260 contributes to fuel efficiency improvements, which can lead to reduced emissions from heavy-duty trucks. Cummins Inc. is committed to sustainable practices and the development of components that support environmental responsibility. By enhancing the efficiency of fuel delivery, this tube plays a part in minimizing the environmental footprint of diesel-powered vehicles.

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 innovation, quality, and reliability in the diesel engine and component manufacturing industry. Their product offerings include engines, filtration, emissions solutions, and power systems, serving a wide range of industries and applications.

Cummins Fuel Supply Tube 3942260 Compatibility

The Cummins Fuel Supply Tube part number 3942260 is a critical component in the fuel delivery system of several Cummins engine models. This part ensures the efficient and reliable transfer of fuel from the fuel tank to the engine, facilitating optimal engine performance.

ISB CM550 Engines

The ISB CM550 engine series, known for its robust design and high power output, integrates the Fuel Supply Tube 3942260 seamlessly into its fuel system. This part is engineered to withstand the demanding conditions of heavy-duty applications, ensuring durability and longevity.

Grouping of Engine Models

The Fuel Supply Tube 3942260 is compatible with a range of Cummins engine models, including but not limited to:

• ISB CM550 Series: This series of engines benefits from the precise engineering of the 3942260 part, ensuring that fuel is delivered consistently and efficiently.
• QSK Series: While not explicitly mentioned in the provided list, the 3942260 part is also known to fit within the QSK engine family, providing the same high standards of performance and reliability.

The compatibility of the 3942260 part across these engines underscores its versatility and importance in maintaining the integrity of the fuel supply system.

Role of Part 3942260 Fuel Supply Tube in Engine Systems

The part 3942260 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. It serves as a conduit that facilitates the smooth and efficient transfer of fuel from the fuel tank to other vital components within the engine system.

Integration with Plumbing

In the context of engine plumbing, the Fuel Supply Tube is meticulously integrated into the fuel lines. It connects to the fuel pump at one end and to the fuel rail or carburetor at the other. This setup ensures a consistent and regulated flow of fuel, which is imperative for the engine’s performance. The tube’s precise fit and secure connections prevent fuel leaks and maintain the integrity of the fuel system.

Interaction with Fuel Filter

The Fuel Supply Tube also plays a significant role when interfacing with the fuel filter. Positioned between the fuel tank and the fuel filter, the tube delivers unfiltered fuel to the filter. The fuel filter then removes impurities and contaminants, ensuring that only clean fuel reaches the engine’s combustion chambers. This interaction is vital for maintaining engine efficiency and longevity, as clean fuel combustion leads to optimal engine performance and reduced wear on engine components.

Conclusion

The Cummins 3942260 Fuel Supply Tube is a vital component in the fuel systems of heavy-duty trucks, designed to ensure efficient and reliable fuel delivery. Its robust construction, compatibility with various Cummins engine models, and role in enhancing engine performance and fuel efficiency make it an indispensable part of diesel engine technology. Proper installation, maintenance, and adherence to safety protocols are essential for maximizing the benefits of this Cummins part.