4007956
Fuel Drain Tube
Cummins®

Introduction

The Cummins 4007956 Fuel Drain Tube is a critical component for commercial trucks, designed to enhance the efficiency and safety of the vehicle’s fuel system. Understanding its function and importance is essential for maintaining optimal truck performance and ensuring safe fuel management.

Basic Concepts of Fuel Drain Tubes

A Fuel Drain Tube is integral to the fuel system, allowing for the controlled removal of fuel. This is crucial for maintenance tasks such as changing fuel filters or draining water and contaminants from the fuel tank. Maintaining a clean fuel system is vital for engine performance and efficiency ¹.

Purpose of the Cummins 4007956 Fuel Drain Tube

This Cummins part facilitates the safe and efficient draining of fuel, which is important for regular maintenance. It ensures the fuel system remains free of contaminants that could impair engine performance. Additionally, it enhances safety during maintenance by preventing fuel spillage ².

Key Features

The Cummins 4007956 is constructed from materials resistant to fuel and the conditions within the fuel system. Its design ensures a secure fit and easy operation, making it a reliable component for fuel system maintenance.

Benefits

Using this part offers several benefits, including improved fuel system efficiency by removing contaminants, enhanced safety during maintenance, and durability to withstand commercial truck operation conditions ³.

Installation Process

Installing the Cummins 4007956 requires following a detailed process to ensure correct fitting and operation. It should be performed with the necessary tools and precautions to avoid damage to the fuel system components.

Troubleshooting Common Issues

Common issues with this part may include leaks or difficulties in operation. Troubleshooting involves checking for damage, ensuring correct installation, and verifying compatibility with the truck’s fuel system. Solutions may range from adjustments to replacement if faulty.

Maintenance Tips

Regular maintenance of the Cummins 4007956 is important for its longevity and optimal performance. This includes periodic inspections for wear or damage, ensuring secure fitting, and cleaning to remove any buildup that could affect operation.

Cummins Overview

Cummins Inc. is renowned in the commercial truck industry for its engines and components, known for innovation and quality. Cummins components, including the 4007956, are recognized for their reliability and performance.

Cummins Engine Compatibility with Part 4007956

This part is designed to fit seamlessly within several Cummins engine models, ensuring efficient fuel management and preventing contamination.

QSK78 Series

The QSK78 series engines, known for robust performance, are compatible with the Fuel Drain Tube part 4007956. This part maintains the integrity of the fuel system by allowing drainage of water or sediment, preventing engine damage.

CM500 Series

The CM500 series engines also benefit from the use of the Fuel Drain Tube part 4007956. It ensures optimal fuel flow and system cleanliness, integrating smoothly with the engine’s fuel management components.

Role of Part 4007956 Fuel Drain Tube in Engine Systems

The 4007956 Fuel Drain Tube is essential within the fuel system of various engine setups, facilitating the safe and efficient drainage of fuel to maintain optimal engine performance.

Integration with Fuel Plumbing

In fuel plumbing, the 4007956 is strategically positioned to connect with the main fuel lines, allowing for controlled fuel release during maintenance or when addressing contamination issues.

Interaction with the Fuel System

Within the fuel system, the 4007956 provides a dedicated pathway for fuel drainage, ensuring that sediment, water, or impurities are expelled, preventing them from entering the fuel injectors or carburetor.

Coordination with Fuel Drain Mechanisms

The 4007956 is often used with fuel drain mechanisms, such as drain valves or petcocks, guiding drained fuel to a collection point or disposal system. This coordination is vital for routine maintenance checks.

Ensuring System Integrity

Incorporating the 4007956 into the fuel system helps maintain engine integrity over time. Regular fuel draining prevents contaminant buildup, which could lead to decreased engine efficiency, increased emissions, or engine failure.

Conclusion

The Cummins 4007956 Fuel Drain Tube plays a vital role in the maintenance and efficiency of commercial truck fuel systems. Its design and features ensure safe and efficient fuel drainage, contributing to the overall performance and safety of the vehicle.