3966128
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3966128 Fuel Supply Tube is a component designed for use in the fuel systems of heavy-duty trucks. Its primary role is to facilitate the transfer of fuel from the tank to the engine, ensuring a steady and reliable supply of fuel under various operating conditions.

Purpose and Function

The Fuel Supply Tube plays a role in the fuel system by delivering fuel from the tank to the engine. It ensures consistent fuel pressure and flow, which are vital for the engine’s performance and efficiency. By maintaining a stable fuel supply, the tube helps in optimizing the combustion process within the engine ¹.

Key Features

The Cummins 3966128 Fuel Supply Tube is constructed using durable materials that are resistant to the corrosive effects of diesel fuel. It features secure connection types that ensure a tight seal, preventing fuel leaks. The design includes specific attributes that enhance its performance and durability, such as reinforced sections to withstand high pressure and flexible segments to accommodate movement within the vehicle’s chassis ².

Benefits

Using the Cummins 3966128 Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent fuel supply to the engine. The tube’s reliable construction enhances the overall reliability of the fuel system. Additionally, it is designed to be compatible with Cummins engines, ensuring seamless integration and optimal performance ³.

Installation and Compatibility

Proper installation of the Fuel Supply Tube involves following specific procedures to ensure a secure and leak-free connection. Tools required may include wrenches and sealants compatible with diesel fuel systems. It is important to refer to the manufacturer’s guidelines for the correct installation process. The tube is designed to be compatible with a range of Cummins engine models, ensuring it can be used across different heavy-duty truck applications.

Maintenance and Troubleshooting

To ensure the longevity and optimal performance of the Fuel Supply Tube, regular maintenance is recommended. This includes inspecting the tube for signs of wear, checking connections for leaks, and ensuring that there are no obstructions in the fuel line. Common issues that may arise include leaks at connection points or blockages within the tube, which can be addressed by tightening connections or cleaning the fuel line as necessary.

Common Issues and Solutions

Frequent problems associated with the Fuel Supply Tube may include leaks due to worn seals or connections, and blockages caused by debris or fuel contaminants. Solutions to these issues involve inspecting the tube and connections regularly, replacing worn seals, and ensuring the fuel system is clean and free of contaminants. In cases of severe damage, the tube may need to be replaced to maintain the integrity of the fuel system.

Safety Considerations

When working with the Fuel Supply Tube, it is important to follow safety practices to prevent accidents. This includes handling fuel with care to avoid spills and ensuring that the fuel system is depressurized before starting any work. Additionally, wearing appropriate personal protective equipment (PPE) is recommended to protect against fuel exposure and potential hazards during maintenance or repair procedures.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins is committed to innovation and sustainability in the diesel engine and components industry. The company’s product range includes a variety of engines and components designed for heavy-duty applications, ensuring reliability and performance across diverse industries.

Cummins Engine Compatibility with Fuel Supply Tube Part 3966128

The Cummins Fuel Supply Tube part number 3966128 is designed to fit a variety of Cummins engines, ensuring a secure and efficient fuel supply system. This part is integral to the proper functioning of the engine’s fuel delivery mechanism. Below is a detailed description of the engines that are compatible with this fuel supply tube.

ISC Series Engines

The ISC series engines include:

• ISC CM850
• ISC8.3 CM2250
• QSC8.3 CM850 (CM2850)

These engines are known for their robust design and are commonly used in various industrial applications. The Fuel Supply Tube part 3966128 is engineered to fit seamlessly with these models, ensuring optimal fuel flow and engine performance.

ISL Series Engines

The ISL series engines include:

• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138

These engines are recognized for their high power output and reliability. The Fuel Supply Tube part 3966128 is specifically designed to match the fuel system requirements of these models, providing a reliable connection for fuel delivery.

QSL Series Engines

The QSL series engines include:

• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250

These engines are often used in heavy-duty applications and are known for their durability and efficiency. The Fuel Supply Tube part 3966128 is compatible with these engines, ensuring that the fuel supply system operates smoothly and efficiently.

By ensuring that the Fuel Supply Tube part 3966128 is used with the appropriate Cummins engines, users can maintain the integrity and performance of their fuel delivery systems. This compatibility is crucial for the longevity and efficiency of the engines in various applications.

Role of Part 3966128 Fuel Supply Tube in Engine Systems

The Part 3966128 Fuel Supply Tube is an essential component in the fuel delivery system of an engine. It is responsible for transporting fuel from the fuel tank to the engine’s fuel injectors or carburetor. This ensures a consistent and reliable fuel supply, which is necessary for optimal engine performance.

Interaction with Plumbing

In the context of engine plumbing, the Fuel Supply Tube connects to various fuel lines and components within the fuel system. It interfaces with the fuel pump, fuel filter, and fuel rail, creating a continuous pathway for fuel to travel. The tube’s design allows it to withstand the pressure and temperature variations within the fuel system, ensuring a leak-free and efficient fuel delivery.

Coordination with Engine Control Module (ECM)

The Fuel Supply Tube also plays a role in the coordination with the Engine Control Module (ECM). The ECM monitors and controls various engine parameters, including fuel delivery. By ensuring a consistent fuel supply, the tube supports the ECM’s ability to make precise adjustments to fuel injection timing and quantity. This interaction is vital for maintaining the engine’s efficiency, performance, and emissions compliance.

Conclusion

The Cummins 3966128 Fuel Supply Tube is a critical component in the fuel delivery system of heavy-duty engines. Its durable construction, reliable performance, and compatibility with various Cummins engines make it an essential part for maintaining optimal engine operation. Regular maintenance and proper installation are key to ensuring the longevity and efficiency of this Cummins part.