3930201
Fuel Transfer Pump
Cummins®

Introduction

The Cummins 3930201 Fuel Transfer Pump is a component designed for use in commercial trucks. It facilitates the movement of fuel from the tank to the engine, ensuring a consistent supply of fuel for combustion. This part is integral to the efficient operation of the vehicle, contributing to its overall performance and reliability.

Basic Concepts of Fuel Transfer Pumps

A fuel transfer pump is a device that moves fuel from the storage tank to the engine. It operates by creating a pressure differential that allows fuel to flow through the system. In the context of a truck, the fuel transfer pump plays a role in maintaining the necessary fuel pressure and flow rate required for the engine to function optimally ¹.

Purpose of the Cummins 3930201 Fuel Transfer Pump

This Cummins part is designed to transfer fuel from the tank to the engine in commercial trucks. It ensures that the engine receives a steady supply of fuel, which is crucial for consistent performance. By maintaining the required fuel pressure, this pump contributes to the efficient operation of the engine.

Key Features

The Cummins 3930201 Fuel Transfer Pump is characterized by several key features that enhance its performance. These include a robust design that ensures durability, the use of high-quality materials to withstand the harsh conditions of commercial truck operations, and unique characteristics such as precise engineering to maintain optimal fuel flow and pressure.

Benefits of Using the Cummins 3930201 Fuel Transfer Pump

Utilizing this part offers several advantages. These include improved fuel efficiency due to consistent fuel delivery, enhanced reliability as a result of its durable construction, and increased durability that ensures long-term performance in demanding environments ².

Installation Process

Installing the Cummins 3930201 Fuel Transfer Pump involves several steps. It is important to ensure that the truck is on a level surface and that the fuel system is depressurized before beginning. The installation process includes securing the pump in place, connecting it to the fuel lines, and ensuring all connections are tight and secure. Tools such as wrenches and screwdrivers may be required.

Common Issues and Troubleshooting

Fuel transfer pumps may encounter issues such as fuel leaks, inconsistent fuel delivery, or pump failure. Troubleshooting these problems involves checking for loose connections, inspecting the pump for signs of wear or damage, and ensuring that the fuel lines are free from obstructions. Solutions may include tightening connections, replacing worn parts, or, in some cases, replacing the pump entirely.

Maintenance Tips

Regular maintenance of the Cummins 3930201 Fuel Transfer Pump is important for ensuring its longevity and optimal performance. This includes periodic inspection of the pump and fuel lines for signs of wear or damage, ensuring that all connections are tight, and replacing the pump if it shows signs of significant wear or failure.

Safety Considerations

When working with the Cummins 3930201 Fuel Transfer Pump, it is important to follow safety guidelines to prevent accidents. This includes ensuring that the fuel system is depressurized before beginning any work, wearing appropriate personal protective equipment, and following all manufacturer recommendations for installation and maintenance.

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 strong reputation in the commercial truck industry, Cummins is known for producing high-quality, reliable components that contribute to the efficient operation of vehicles.

Cummins Fuel Transfer Pump 3930201 Compatibility

The Cummins Fuel Transfer Pump, part number 3930201, is a critical component in the fuel system of various diesel engines. This pump is designed to ensure a steady and efficient flow of fuel from the fuel tank to the engine, which is essential for maintaining optimal engine performance.

Engine Compatibility

The 3930201 Fuel Transfer Pump is compatible with several Cummins engine models, including:

• 4B3.9: This engine model benefits from the reliable operation of the 3930201 pump, ensuring consistent fuel delivery and preventing issues such as fuel starvation or engine stalling.
• 6C8.3: Similarly, the 6C8.3 engine relies on the 3930201 pump to maintain a steady fuel supply, which is crucial for its performance and longevity.

These engines, while differing in size and application, share a common need for efficient fuel transfer, making the 3930201 pump a versatile and essential component across these models.

Role of Part 3930201 Fuel Transfer Pump in Engine Systems

The part 3930201 Fuel Transfer Pump is an integral component in the fuel delivery system of various engine setups. Its primary function is to ensure a consistent and reliable flow of fuel from the fuel tank to the engine’s main fuel pump, commonly referred to as the lift pump.

In a typical engine system, the Fuel Transfer Pump is positioned between the fuel tank and the high-pressure fuel pump. This placement allows it to draw fuel from the tank and deliver it under pressure to the lift pump. The lift pump then further pressurizes the fuel before it reaches the engine’s fuel injection system.

The Fuel Transfer Pump operates by creating a steady stream of fuel, which is essential for maintaining the engine’s performance, especially under varying load conditions. It helps in reducing the strain on the high-pressure pump by ensuring a continuous supply of fuel, thus enhancing the overall efficiency of the fuel delivery system.

Moreover, the Fuel Transfer Pump plays a significant role in fuel filtration. As it draws fuel from the tank, it passes through a fuel filter, which removes any impurities or contaminants. This clean fuel is then delivered to the lift pump, ensuring that only filtered fuel enters the engine’s fuel system. This process is vital for protecting the sensitive components of the fuel injection system from damage due to contaminants.

Conclusion

In summary, the part 3930201 Fuel Transfer Pump is a key component that ensures a reliable and clean fuel supply to the engine, supporting the efficient operation of the fuel delivery system. Regular maintenance and proper installation are crucial for maximizing the performance and longevity of this part.