3979334
Fuel Supply Tube
Cummins®

The Fuel Supply Tube 3979334, manufactured by Cummins, is a component integral to the operation of commercial trucks. Cummins, a well-established name in the commercial truck industry, is known for its high-quality engine components. The 3979334 Fuel Supply Tube is designed to facilitate the efficient delivery of fuel to the engine, ensuring optimal performance and reliability ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit within the fuel system that transports fuel from the tank to the engine. Its function is vital for maintaining a consistent fuel supply, which directly impacts the engine’s performance. The tube must be capable of withstanding the pressures and temperatures within the fuel system while ensuring a smooth and uninterrupted flow of fuel ².

Purpose of the 3979334 Fuel Supply Tube

The 3979334 Fuel Supply Tube plays a role in the fuel delivery system by ensuring a steady and reliable flow of fuel to the engine. This consistent fuel delivery is crucial for maintaining engine performance under various operating conditions. The tube is engineered to handle the specific demands of commercial truck engines, providing a durable and efficient fuel supply solution ³.

Key Features

The 3979334 Fuel Supply Tube is constructed with a focus on durability and performance. It is made from high-quality materials that can withstand the pressures and temperatures encountered in the fuel system. The design includes features that enhance its resistance to wear and corrosion, ensuring long-term reliability. Additionally, the tube is engineered to minimize fuel leakage and maximize flow efficiency.

Benefits

The advantages of the 3979334 Fuel Supply Tube include improved fuel efficiency, enhanced reliability, and increased longevity. Its robust construction and precise engineering contribute to a more efficient fuel delivery system, which can lead to better overall engine performance. The tube’s durability also reduces the need for frequent replacements, offering long-term value to truck operators.

Installation Process

Proper installation of the 3979334 Fuel Supply Tube involves several steps to ensure it functions correctly within the fuel system. Begin by ensuring the fuel system is clean and free of debris. Carefully align the tube with the fuel tank and engine connections, using the appropriate fittings and seals. Tighten all connections securely to prevent leaks, and perform a pressure test to confirm the integrity of the fuel system.

Maintenance Tips

Regular maintenance of the 3979334 Fuel Supply Tube is important for ensuring its longevity and optimal performance. Inspect the tube periodically for signs of wear, corrosion, or leaks. Clean the tube and its connections as needed to remove any buildup that could impede fuel flow. Following the manufacturer’s recommended maintenance schedule will help prevent issues and ensure the tube continues to operate efficiently.

Troubleshooting Common Issues

Common problems with fuel supply tubes include leaks and blockages. To address these issues, first, identify the source of the leak or blockage. Inspect the tube and connections for damage or corrosion. If a leak is detected, tighten the connections or replace any damaged parts. For blockages, clean the tube thoroughly or replace it if necessary. Regular maintenance can help prevent these issues from occurring.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its wide range of high-quality engine components. Founded in 1919, Cummins has built a reputation for innovation, reliability, and performance. The company’s product portfolio includes engines, filtration systems, and other critical components, all designed to meet the demanding requirements of commercial trucking. The 3979334 Fuel Supply Tube is a testament to Cummins’ commitment to quality and durability in the fuel delivery system.

Cummins Engine Part 3979334: Fuel Supply Tube Compatibility

The Cummins part number 3979334, identified as a Fuel Supply Tube, is a critical component in the fuel delivery system of certain Cummins engines. This part is designed to ensure the efficient and reliable transfer of fuel from the fuel tank to the engine’s fuel injection system.

Compatibility with Cummins Engines

The Fuel Supply Tube (part number 3979334) is compatible with the following Cummins engines:

• QSC8.3 CM850 (CM2850)
• QSL8.9 CM2150 L141
• QSL9 CM850 (CM2850)

Grouping by Engine Series

QSC8.3 CM850 (CM2850) and QSL9 CM850 (CM2850)

Both the QSC8.3 CM850 (CM2850) and QSL9 CM850 (CM2850) engines share a common fuel delivery architecture, which makes the Fuel Supply Tube (part number 3979334) interchangeable between these two models. This commonality ensures that the same part can be used across these engines, simplifying maintenance and repair processes.

QSL8.9 CM2150 L141

The QSL8.9 CM2150 L141 engine, while part of a different series, also utilizes the Fuel Supply Tube (part number 3979334). This compatibility highlights the versatility of the part and its importance in maintaining the integrity of the fuel system across different engine models.

By ensuring that the Fuel Supply Tube (part number 3979334) is correctly installed and maintained, operators can help maintain the performance and longevity of these Cummins engines.

Role of Part 3979334 Fuel Supply Tube in Engine Systems

The part 3979334 Fuel Supply Tube is an integral component in the fuel delivery system of various engine setups. It serves as a conduit that facilitates the smooth and efficient transfer of fuel from the fuel tank to the engine’s fuel injection system or carburetor.

In systems equipped with a fuel filter, the Fuel Supply Tube connects downstream of the filter. This placement ensures that any contaminants or debris have been removed from the fuel before it reaches the engine. The filtered fuel then travels through the tube, minimizing the risk of engine damage due to impurities.

When considering the plumbing aspect, the Fuel Supply Tube is designed to integrate seamlessly with the engine’s fuel lines. Its precise diameter and length are tailored to match the specific requirements of the engine system, ensuring a secure and leak-free connection. This integration is vital for maintaining the integrity of the fuel delivery system and preventing any potential fuel leaks, which could pose safety hazards.

Overall, the Fuel Supply Tube plays a significant role in ensuring that the engine receives a consistent and clean fuel supply, which is essential for optimal engine performance and longevity.

Conclusion

The 3979334 Fuel Supply Tube is a critical component in the fuel delivery system of Cummins engines, ensuring efficient and reliable fuel transfer. Its robust construction, precise engineering, and compatibility with various Cummins engine models make it a valuable asset for maintaining engine performance and longevity. Proper installation, regular maintenance, and timely troubleshooting are essential for maximizing the benefits of this Cummins part.