4989804
Fuel Supply Tube
Cummins®

Introduction

The Cummins 4989804 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 efficient engine operation ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit in the fuel delivery system that transports fuel under pressure from the tank to the engine. It must be robust to withstand the fuel’s demands and maintain the fuel’s integrity and pressure as it moves toward the engine’s fuel injection system ².

Purpose of the Cummins 4989804 Fuel Supply Tube

This Cummins part is vital for delivering fuel from the tank to the engine, ensuring a steady and pressurized fuel supply. This consistent delivery is necessary for the engine to operate efficiently and reliably ³.

Key Features

The 4989804 is constructed from materials resistant to fuel corrosion and high pressures. Its design ensures a secure fit within the fuel system, minimizing the risk of leaks and ensuring efficient fuel transfer.

Benefits

This part contributes to improved fuel efficiency by ensuring fuel is delivered without unnecessary loss or degradation. Its reliable construction supports the longevity of the fuel system, reducing the need for frequent replacements and maintenance.

Installation and Integration

Proper installation of the Fuel Supply Tube is crucial for compatibility with the truck’s engine and fuel system. It should be securely fastened to prevent leaks and ensure efficient fuel delivery.

Troubleshooting and Maintenance

Common issues with this part may include leaks or blockages. Regular inspection and maintenance can help identify and address these issues before they lead to more significant problems. Maintenance practices should include checking for signs of wear or damage and ensuring all connections are secure.

Safety Considerations

When handling, installing, or maintaining the Fuel Supply Tube, it is important to adhere to safety guidelines. This includes working in a well-ventilated area, avoiding sparks or flames near the fuel system, and using appropriate personal protective equipment to prevent accidents and ensure safe operation.

Environmental Impact

The Fuel Supply Tube contributes to environmental considerations by supporting improved fuel efficiency and reducing emissions. Efficient fuel delivery minimizes waste and ensures that the engine operates at optimal efficiency, which can lead to lower emissions and a reduced environmental footprint.

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 a commitment to quality, Cummins serves customers in approximately 190 countries and territories, providing reliable and efficient power solutions for a variety of applications, including heavy-duty trucks.

Compatibility

This Cummins part is compatible with the following engines:

• QSC9 CM2250/QSL9 CM2250
• QSL9 CM2250
• QSL9 CM2350 L102

For the QSC9 CM2250/QSL9 CM2250 and QSL9 CM2250 engines, the 4989804 ensures a precise fit, facilitating the smooth transfer of fuel from the fuel tank to the engine. For the QSL9 CM2350 L102 engine, it is engineered to meet the specific requirements of this model, ensuring that fuel supply is consistent and uninterrupted.

Role in Engine Systems

This part is an integral component in the fuel delivery system of various engine setups. It is responsible for transporting fuel from the fuel tank to the engine’s fuel injectors or carburetor, ensuring a consistent and regulated fuel flow, which is essential for the engine’s performance and efficiency.

Interaction with Plumbing

In the context of engine plumbing, the Fuel Supply Tube interfaces with various fuel lines and connectors. It is typically connected to the fuel pump on one end and the fuel rail or carburetor on the other. The tube must be securely fastened to prevent fuel leaks and ensure that the fuel pressure remains consistent throughout the system.

Coordination with Engine Control Module (ECM)

The Engine Control Module (ECM) plays a significant role in monitoring and controlling the fuel supply to the engine. The Fuel Supply Tube works in conjunction with the ECM by providing a pathway for fuel to reach the injectors. The ECM uses sensors to monitor various parameters such as engine load, temperature, and air-fuel ratio. Based on this data, the ECM adjusts the fuel injectors’ operation to maintain optimal combustion. The Fuel Supply Tube must be in good condition to ensure that the fuel reaches the injectors as commanded by the ECM, thereby contributing to efficient engine operation and reduced emissions.

Conclusion

The Cummins 4989804 Fuel Supply Tube is a vital component in the fuel delivery system of heavy-duty trucks. Its reliable construction, efficient fuel delivery, and compatibility with various engines make it an essential part for maintaining engine performance and efficiency. Regular maintenance and proper installation are key to ensuring the longevity and effectiveness of this part.