4988747
Fuel Transfer Pump
Cummins®

Introduction

The Cummins 4988747 Fuel Transfer Pump is a component designed for use in commercial trucks. Its purpose is to facilitate the movement of fuel from the tank to the engine, ensuring a consistent supply of fuel under various operating conditions. This part plays a role in maintaining the truck’s operational efficiency and performance by providing the necessary fuel pressure and volume required by the engine ².

Basic Concepts of Fuel Transfer Pumps

A fuel transfer pump is a device that moves fuel from the storage tank to the engine’s fuel injection system. It operates by creating a pressure differential that allows fuel to flow through the system. The significance of a fuel transfer pump in a truck’s fuel system lies in its ability to deliver fuel at the correct pressure and volume, which is essential for the engine’s combustion process ¹. There are various types of fuel transfer pumps, including mechanical, electric, and high-pressure pumps, each suited to different applications based on the truck’s engine requirements and design.

Role of the 4988747 Fuel Transfer Pump in Truck Operation

The Cummins 4988747 Fuel Transfer Pump performs several functions within the truck’s fuel system. It ensures that fuel is delivered to the engine at the required pressure and volume, which is vital for the engine’s combustion efficiency. By maintaining a consistent fuel supply, the pump contributes to the truck’s overall efficiency and performance. It also helps in reducing the risk of fuel starvation, which can lead to engine misfires or stalling.

Key Features

The Cummins 4988747 Fuel Transfer Pump is characterized by several design elements and materials that enhance its performance and durability. It is constructed using high-quality materials to withstand the harsh conditions of commercial truck operations. The pump’s design includes features that improve fuel delivery efficiency and reliability, such as precision-machined components and robust seals. These characteristics ensure that the pump can operate effectively under a wide range of temperatures and pressures.

Benefits

The advantages provided by the Cummins 4988747 Fuel Transfer Pump include improved fuel delivery, which leads to enhanced engine performance. The pump’s design allows for consistent fuel pressure and volume, which is crucial for optimal engine operation ². Additionally, the pump’s durability and reliability contribute to increased uptime for the truck, reducing the likelihood of unexpected breakdowns due to fuel system issues.

Troubleshooting and Maintenance

Common issues that may arise with the 4988747 Fuel Transfer Pump include fuel leaks, reduced fuel pressure, and pump failure. Troubleshooting steps may involve checking for leaks, ensuring proper fuel line connections, and verifying the pump’s electrical connections. Regular maintenance, such as inspecting for wear and tear, cleaning the fuel filter, and ensuring the pump is free from contaminants, can help ensure the longevity and optimal performance of the pump.

About Cummins

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 strong reputation in the industry, Cummins is committed to producing high-quality automotive components. The company’s focus on reliability, performance, and customer satisfaction is evident in its wide range of products, including the Cummins 4988747 Fuel Transfer Pump.

Compatibility of Cummins 4988747 Fuel Transfer Pump

The Cummins Fuel Transfer Pump part number 4988747 is designed to fit a variety of engine models, ensuring efficient fuel delivery across different engine configurations. Here’s a breakdown of its compatibility:

Cummins 4B3.9 Engines

The 4988747 fuel transfer pump is compatible with the Cummins 4B3.9 engines. This model is known for its reliability and performance, making the fuel transfer pump an essential component for maintaining optimal fuel flow.

Cummins 6B5.9 Engines

Similarly, the 4988747 fuel transfer pump is also suitable for the Cummins 6B5.9 engines. This engine variant benefits from the pump’s precise fuel delivery, ensuring consistent performance and efficiency.

Cummins 6C8.3 Engines

The Cummins 6C8.3 engines are another model that can utilize the 4988747 fuel transfer pump. This compatibility ensures that the engine receives the necessary fuel supply to operate smoothly and efficiently.

Cummins L8.9 Engines

The Cummins L8.9 engines are compatible with the 4988747 fuel transfer pump. This engine model, known for its power and durability, relies on the pump to maintain a steady fuel supply, enhancing overall performance.

Cummins L8.9 L121 Engines

The Cummins L8.9 L121 engines also fit the 4988747 fuel transfer pump. This specific variant of the L8.9 engine benefits from the pump’s ability to deliver fuel accurately, ensuring reliable operation.

Cummins L9.3 L105 Engines

The Cummins L9.3 L105 engines are compatible with the 4988747 fuel transfer pump. This engine model, designed for high performance, requires the pump’s precise fuel delivery to maintain efficiency and power.

Cummins L9.5 L117 Engines

Lastly, the Cummins L9.5 L117 engines can also use the 4988747 fuel transfer pump. This engine variant, known for its robust performance, relies on the pump to ensure a consistent and reliable fuel supply.

By ensuring compatibility with these various engine models, the Cummins 4988747 fuel transfer pump provides a versatile solution for maintaining optimal fuel delivery across different engine configurations.

Role of Part 4988747 Fuel Transfer Pump in Engine Systems

The 4988747 Fuel Transfer Pump is an essential component in various engine systems, facilitating the efficient movement of fuel from the main tank to the engine. This part operates in conjunction with several other components to ensure optimal engine performance.

Integration with Fuel System Components

1. Fuel Tank: The pump draws fuel from the main tank, ensuring a consistent supply for the engine. It is typically submerged in the fuel to maintain a steady intake.

2. Fuel Lines: Once the fuel is drawn from the tank, it travels through the fuel lines. The pump maintains the necessary pressure to push the fuel through these lines without interruption.

3. Fuel Filter: Before reaching the engine, the fuel passes through a filter. The pump ensures that the fuel moves through the filter efficiently, removing any impurities that could harm the engine.

4. Fuel Injectors: The pump delivers fuel to the injectors at the required pressure. This ensures that the fuel is atomized properly for combustion, leading to better engine efficiency and performance.

5. Return Line: Excess fuel not used by the injectors is sent back to the tank via the return line. The pump helps manage this return flow, maintaining a balanced fuel system.

6. Fuel Pressure Regulator: This component works in tandem with the pump to maintain the correct fuel pressure within the system. The pump provides the initial pressure, which the regulator then fine-tunes.

7. Engine Control Unit (ECU): The ECU monitors the fuel system and sends signals to the pump to adjust its operation based on engine demand. This ensures that the fuel supply is always optimal for the current operating conditions.

By effectively coordinating with these components, the 4988747 Fuel Transfer Pump plays a significant role in maintaining the overall efficiency and reliability of the engine system.

Conclusion

The Cummins 4988747 Fuel Transfer Pump is a critical component in the fuel system of commercial trucks, ensuring efficient and reliable fuel delivery to the engine. Its design and features contribute to the overall performance and durability of the truck, making it a valuable part for maintaining optimal engine operation.