3966131
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3966131 Fuel Supply Tube is a component designed for use in the fuel systems of heavy-duty trucks. Its purpose is to facilitate the transfer of fuel from the tank to the engine, ensuring a consistent and reliable fuel supply that is vital for the engine’s operation.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit within the fuel delivery system that carries fuel from the tank to the engine. It operates under pressure generated by the fuel pump and must be capable of withstanding the demands of the engine’s fuel requirements. In the context of a truck’s engine, the fuel supply tube is a critical link in the chain of components that deliver fuel efficiently and effectively ¹.

Purpose of the Cummins 3966131 Fuel Supply Tube

The Cummins 3966131 Fuel Supply Tube plays a role in the operation of a truck by delivering fuel from the tank to the engine. It ensures that the engine receives a steady flow of fuel, which is necessary for combustion and power generation. The tube’s design and construction are tailored to meet the specific demands of Cummins engines, ensuring compatibility and optimal performance ².

Key Features

The Cummins 3966131 Fuel Supply Tube is constructed from materials that offer durability and resistance to the corrosive effects of fuel. Its design includes features that enhance its performance, such as precise fittings for secure connections and a smooth interior to minimize fuel flow resistance. These attributes contribute to the tube’s longevity and reliability in demanding applications ³.

Benefits

The Cummins 3966131 Fuel Supply Tube provides several advantages, including improved fuel efficiency due to its efficient design, which minimizes fuel loss and ensures a consistent fuel supply. Its reliability is enhanced by the robust construction, which is less prone to failure under the stress of heavy-duty use. Additionally, the tube is compatible with Cummins engines, ensuring seamless integration into the fuel system.

Installation Process

Installing the Cummins 3966131 Fuel Supply Tube requires following a series of steps to ensure proper fit and function. The process involves disconnecting the old tube, cleaning the fuel system, and connecting the new tube with the appropriate fittings. Tools such as wrenches and fuel line disconnect tools may be required. Safety precautions, including working in a well-ventilated area and avoiding sparks, should be observed throughout the installation.

Common Issues and Troubleshooting

Fuel supply tubes can encounter issues such as leaks or blockages. These problems can be diagnosed by inspecting the tube for visible damage or by testing the fuel system for pressure drops. Troubleshooting may involve replacing damaged sections of the tube or cleaning out blockages to restore proper fuel flow.

Maintenance Tips

To ensure the longevity and optimal performance of the Cummins 3966131 Fuel Supply Tube, routine maintenance practices should be followed. This includes regular inspections for signs of wear or damage, cleaning the tube to remove any contaminants, and replacing the tube if it shows signs of significant degradation. Adhering to manufacturer-recommended inspection intervals will help maintain the tube’s condition.

Safety Considerations

When working with fuel system components, it is important to follow safety protocols and best practices. This includes proper handling and storage of fuel to prevent accidents. Fuel is flammable, and precautions must be taken to avoid sparks or open flames near the fuel system. Additionally, personal protective equipment should be worn to protect against fuel spills or splashes.

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 quality, Cummins has established a strong reputation in the automotive industry, particularly for its diesel engines and components. The company’s commitment to excellence is reflected in its product offerings, which are designed to meet the rigorous demands of various applications.

Cummins Fuel Supply Tube Part 3966131 Compatibility

The Cummins part number 3966131, a Fuel Supply Tube, is designed to fit a variety of Cummins engine models. This part is integral in ensuring the proper delivery of fuel to the engine’s combustion chamber, which is crucial for optimal engine performance and efficiency.

ISC CM2150 and ISL CM2150

The ISC CM2150 and ISL CM2150 engines are part of Cummins’ mid-range power series. The Fuel Supply Tube part 3966131 is specifically engineered to integrate seamlessly with these engines, ensuring a reliable fuel supply that meets the demands of these robust power units.

ISL9 CM2150 SN

The ISL9 CM2150 SN engine, a variant of the ISL series, also benefits from the precise engineering of the Cummins Fuel Supply Tube part 3966131. This part is tailored to fit the unique specifications of the ISL9 series, ensuring that the engine operates at peak efficiency.

QSC8.3 CM850 (CM2850) and QSL8.9 CM2150 L141

The QSC8.3 CM850 (CM2850) and QSL8.9 CM2150 L141 engines are part of Cummins’ heavy-duty lineup. The Fuel Supply Tube part 3966131 is designed to handle the higher demands of these engines, providing a durable and reliable fuel supply system that can withstand the rigors of heavy-duty applications.

QSL9 CM850 (CM2850)

The QSL9 CM850 (CM2850) engine, another member of Cummins’ heavy-duty series, is also compatible with the Cummins Fuel Supply Tube part 3966131. This part is engineered to meet the stringent requirements of the QSL9 series, ensuring that the engine receives a consistent and reliable fuel supply.

ISC CM850

The ISC CM850 engine, a part of Cummins’ mid-range power series, is another engine model that is compatible with the Cummins Fuel Supply Tube part 3966131. This part is designed to fit the ISC CM850 engine, ensuring that the fuel supply system operates efficiently and reliably.

Role of Part 3966131 Fuel Supply Tube in Engine Systems

The fuel supply tube, identified by part number 3966131, is an integral component in the fuel delivery system of an engine. Its primary function is to transport fuel from the fuel tank to the fuel filter and subsequently to the engine’s fuel injection system or carburetor.

Integration with Plumbing

In the context of engine plumbing, the fuel supply tube connects various sections of the fuel system, ensuring a continuous and uninterrupted flow of fuel. It interfaces with the fuel pump outlet, directing pressurized fuel towards the fuel filter. The tube is designed to withstand the pressure and temperature variations within the fuel system, maintaining fuel integrity and delivery efficiency.

Interaction with Fuel Filter

The fuel supply tube plays a significant role in the fuel filtration process. After fuel is pumped from the tank, it travels through the fuel supply tube to the fuel filter. The filter removes impurities and contaminants from the fuel, ensuring that only clean fuel reaches the engine. The tube’s connection to the fuel filter is secure and leak-proof, preventing any fuel loss or contamination.

This component ensures that the fuel system operates smoothly, providing the engine with a consistent supply of clean fuel. The reliable performance of the fuel supply tube is essential for the overall efficiency and longevity of the engine.

Conclusion

The Cummins 3966131 Fuel Supply Tube is a vital component in the fuel delivery system of heavy-duty trucks. Its design and construction are tailored to meet the specific demands of Cummins engines, ensuring compatibility and optimal performance. By facilitating the transfer of fuel from the tank to the engine, this part plays a crucial role in maintaining a consistent and reliable fuel supply, which is essential for the engine’s operation. Regular maintenance and adherence to safety protocols are necessary to ensure the longevity and efficiency of the fuel supply tube.