3930733
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3930733 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks. It ensures a steady and reliable fuel supply from the tank to the engine, which is essential for maintaining engine performance and efficiency ².

Purpose and Function

The Fuel Supply Tube is designed to deliver fuel from the tank to the engine, ensuring consistent fuel pressure and flow. This stability is vital for optimal engine performance and efficiency ¹.

Design and Construction

Constructed from high-quality materials, the Cummins 3930733 Fuel Supply Tube offers durability and resistance to the harsh conditions within a heavy-duty truck’s fuel system. Protective coatings or reinforcements may be included to enhance longevity and performance, helping the tube withstand operational pressures and temperatures ².

Installation Process

Installing the Cummins 3930733 Fuel Supply Tube requires careful attention to detail. The process includes:

1. Ensuring the fuel system is depressurized and the engine is off.
2. Disconnecting the old fuel supply tube from the fuel tank and engine.
3. Inspecting the fuel lines and connections for damage or wear.
4. Installing the new Fuel Supply Tube, ensuring all connections are secure and tight.
5. Repressurizing the fuel system and checking for leaks. Tools required may include wrenches, fuel line disconnect tools, and a pressure gauge. Safety considerations include wearing protective gloves and eyewear, and ensuring proper ventilation when working with fuel ².

Maintenance and Troubleshooting

Regular maintenance of the Fuel Supply Tube involves inspecting it for signs of wear, leaks, or damage. Common issues may include fuel leaks, inconsistent fuel pressure, or blockages within the tube. Troubleshooting steps include:

• Checking all connections for tightness.
• Inspecting the tube for cracks or damage.
• Ensuring the fuel filter is clean and functioning properly. Addressing these issues promptly helps maintain the efficiency and reliability of the fuel system ¹.

Benefits of Using Cummins 3930733

Using the Cummins 3930733 Fuel Supply Tube offers several advantages, including improved fuel efficiency due to consistent fuel delivery, enhanced reliability thanks to its durable construction, and compatibility with Cummins engines, ensuring seamless integration into the fuel system ².

Common Applications

The Cummins 3930733 Fuel Supply Tube is commonly used in various heavy-duty trucks and engines. It is compatible with a range of Cummins engine models, making it a versatile component for fleet operators and maintenance professionals ².

Safety Considerations

When working with the Fuel Supply Tube, it is important to follow safety guidelines. This includes handling fuel with care to avoid spills and ensuring that high-pressure systems are managed properly. Wearing appropriate personal protective equipment (PPE) and ensuring proper ventilation are also crucial safety measures ².

Cummins Overview

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industry. With a history of innovation and quality, Cummins has established a reputation for producing reliable and high-performance engine components. The company’s commitment to excellence is reflected in its wide range of products, including the Cummins 3930733 Fuel Supply Tube ².

Application in Cummins Engines

The Cummins Fuel Supply Tube part number 3930733 is a critical component in the fuel delivery system of several Cummins engine models. This part ensures that fuel is efficiently and accurately delivered from the fuel tank to the engine’s fuel injection system.

6B5.9 Engine Series

The 6B5.9 engine series is known for its robust design and reliability, often used in heavy-duty applications. The Fuel Supply Tube part 3930733 is integral to maintaining the engine’s performance by ensuring a steady and clean fuel supply.

Grouped Applications

The part 3930733 is also compatible with other Cummins engines that share similar fuel delivery system configurations. This includes engines used in various industrial and commercial applications, where consistent fuel flow is crucial for optimal engine operation ².

Importance of the Fuel Supply Tube

The proper functioning of the fuel supply tube is essential for several reasons:

• Fuel Efficiency: Ensures that the engine receives the correct amount of fuel, which is vital for maintaining fuel efficiency and reducing unnecessary fuel consumption ¹.
• Engine Performance: A well-functioning fuel supply tube contributes to consistent engine performance by preventing fuel starvation or contamination, which can lead to engine misfires or reduced power output ¹.
• Durability: Made from high-quality materials, this part is designed to withstand the rigors of continuous use in demanding environments, ensuring longevity and reliability ².

Installation and Maintenance

When installing or replacing the Fuel Supply Tube part 3930733, it is important to follow proper procedures to ensure a secure and leak-free connection. Regular maintenance checks should be conducted to inspect for any signs of wear, corrosion, or damage, which could compromise the integrity of the fuel delivery system ².

Role of Part 3930733 Fuel Supply Tube in Engine Systems

The part 3930733 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. It is responsible for transporting fuel from the fuel tank to the fuel filter and subsequently to the engine’s fuel injectors or carburetor.

In the context of plumbing, the Fuel Supply Tube acts as a conduit that ensures a steady and uninterrupted flow of fuel. It is designed to withstand the pressures and temperatures associated with fuel transport, ensuring that the fuel reaches the engine in the right quantity and at the correct pressure. This is particularly important in high-performance engines where fuel demand can fluctuate rapidly ².

When considering the fuel filter, the Fuel Supply Tube plays a supportive yet significant role. It delivers fuel to the filter, where contaminants are removed before the fuel proceeds to the engine. This ensures that only clean fuel enters the engine, promoting efficient combustion and reducing wear on internal components ¹.

Overall, the integration of the Fuel Supply Tube within these systems highlights its importance in maintaining the overall efficiency and reliability of the engine ².

Conclusion

The Cummins 3930733 Fuel Supply Tube is a vital component in the fuel systems of heavy-duty trucks, ensuring a steady and reliable fuel supply to the engine. Its durable construction, compatibility with various Cummins engines, and role in maintaining fuel efficiency and engine performance make it an essential part for fleet operators and maintenance professionals. Regular maintenance and proper installation are crucial to ensure the longevity and reliability of this component ².