3930135
Fuel Transfer Pump
Cummins®

Introduction

The Cummins 3930135 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 under various operating conditions. This pump is integral to the efficient operation of the truck’s fuel system, contributing to 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’s fuel injection system. It operates by creating a pressure differential that allows fuel to flow through the system. In the context of a truck, this pump ensures that the engine receives a steady supply of fuel, which is crucial for consistent performance. The pump typically consists of an electric motor and a pumping mechanism, which may include gears, impellers, or pistons ¹.

Purpose of the Cummins 3930135 Fuel Transfer Pump

The Cummins 3930135 Fuel Transfer Pump serves to transfer fuel from the truck’s fuel tank to the engine. It plays a role in maintaining the required fuel pressure and flow rate necessary for the engine’s operation. This pump is designed to handle the demands of commercial truck applications, ensuring that the engine receives fuel efficiently even under varying load conditions.

Key Features

The Cummins 3930135 Fuel Transfer Pump is characterized by its robust design and the use of high-quality materials. It features a durable housing that protects the internal components from wear and environmental factors. The pump’s design includes precision-engineered parts that ensure efficient fuel transfer and minimal energy loss. Additionally, it may incorporate features such as built-in filters to prevent contaminants from entering the fuel system.

Benefits of Using the Cummins 3930135 Fuel Transfer Pump

Utilizing the Cummins 3930135 Fuel Transfer Pump can lead to improved fuel efficiency, as it ensures a consistent and adequate fuel supply to the engine. The pump’s reliable operation contributes to the overall durability of the truck’s fuel system. Its design also enhances the pump’s longevity, reducing the need for frequent replacements and maintenance.

Installation and Integration

When installing the Cummins 3930135 Fuel Transfer Pump, it is important to follow the manufacturer’s guidelines to ensure proper integration into the truck’s fuel system. This may involve connecting the pump to the fuel tank and the engine’s fuel lines, as well as securing it in place. It is also important to verify that the electrical connections are secure and that the pump is compatible with the truck’s existing fuel system components.

Troubleshooting Common Issues

Common issues with Fuel Transfer Pumps may include insufficient fuel delivery, unusual noises, or pump failure. When troubleshooting the Cummins 3930135 model, it is important to check for proper electrical connections, ensure that the pump is receiving power, and inspect the fuel lines for blockages or leaks. If the pump is not functioning correctly, it may be necessary to replace worn-out components or the entire pump.

Maintenance Tips

To ensure the longevity and optimal performance of the Cummins 3930135 Fuel Transfer Pump, regular maintenance is recommended. This includes checking the pump for signs of wear or damage, ensuring that the electrical connections are secure, and inspecting the fuel lines for leaks. It is also beneficial to follow the manufacturer’s recommended service intervals for more comprehensive maintenance procedures.

Cummins Overview

Cummins Inc. is a well-established manufacturer with a history of producing diesel engines and related components. The company is recognized for its expertise in the industry, providing reliable and high-performance products for various applications, including commercial trucks. Cummins’ commitment to quality and innovation is reflected in its range of fuel system components, including the 3930135 Fuel Transfer Pump ².

Role of Part 3930135 Fuel Transfer Pump in Engine Systems

The Fuel Transfer Pump (part 3930135) is integral to the efficient operation of various engine systems, particularly in marine applications where reliability and performance are paramount. This component is designed to ensure a consistent and adequate fuel supply to the engine, enhancing overall system functionality.

Integration with Lift Pump

In systems that incorporate a Lift Pump, the Fuel Transfer Pump works in tandem to maintain optimal fuel pressure. The Lift Pump initially draws fuel from the tank, and the Fuel Transfer Pump then takes over to deliver this fuel at the required pressure to the engine’s fuel injection system. This sequential operation ensures that the engine receives a steady fuel flow, which is essential for smooth operation and performance.

Role in Marine Spare Parts Kit

When included in a Marine Spare Parts Kit, the Fuel Transfer Pump is a key component for maintaining the operational readiness of marine engines. Its presence in the kit allows for quick replacement in the event of a failure, minimizing downtime and ensuring that the vessel can continue its journey without significant interruptions. This is particularly important in remote or harsh marine environments where immediate repairs are necessary.

General Pump Functionality

As a general Pump within the fuel system, the Fuel Transfer Pump is responsible for overcoming the resistance in the fuel lines and filters. It ensures that fuel is delivered efficiently to the engine, even under varying load conditions. This consistent fuel delivery is vital for the engine’s combustion process, directly influencing its power output and fuel efficiency.

Fuel Transfer Process

The primary function of the Fuel Transfer Pump is to facilitate the Fuel Transfer from the storage tank to the engine. This process involves drawing fuel from the tank, filtering it to remove any impurities, and then delivering it to the engine at the correct pressure. Efficient fuel transfer is essential for preventing engine starvation, which can lead to misfires, reduced performance, and potential damage to the engine components.

Conclusion

The Cummins 3930135 Fuel Transfer Pump plays a significant role in ensuring the reliable and efficient operation of engine systems, particularly in marine applications. Its integration with other components like the Lift Pump and its inclusion in marine spare parts kits underscores its importance in maintaining engine performance and operational readiness.