4943940
Fuel Drain Tube
Cummins®

Introduction

The Cummins 4943940 Fuel Drain Tube is a component designed for use in the fuel systems of heavy-duty trucks. Its role is to facilitate the draining of fuel from the system, which is necessary for routine maintenance or in emergency situations. The proper functioning of this tube is significant for maintaining the efficiency and safety of the truck’s fuel system ¹.

Purpose and Function

The Cummins 4943940 Fuel Drain Tube serves a specific role within the fuel system of a truck. It is designed to allow for the controlled release of fuel from the system. This function is vital for several reasons: it enables the removal of water or contaminants that may have accumulated in the fuel, allows for the safe disposal of fuel during maintenance procedures, and can be used in emergency situations to quickly depressurize the fuel system. The tube is an integral part of ensuring that the fuel system operates cleanly and efficiently ².

Key Features

The design and construction of the Cummins 4943940 Fuel Drain Tube incorporate several features that enhance its performance and durability. The tube is typically made from high-quality materials that are resistant to corrosion and the effects of fuel. It features secure connection types that ensure a tight seal, preventing fuel leaks. Additionally, the tube may have unique attributes such as a built-in filter to catch debris during the draining process, or a design that simplifies the connection and disconnection for ease of use ³.

Benefits

Utilizing the Cummins 4943940 Fuel Drain Tube offers several advantages. It contributes to improved fuel system maintenance by providing a straightforward method for draining fuel, which helps in removing contaminants and ensuring the system’s cleanliness. The tube enhances safety during fuel draining procedures by offering a controlled and secure way to release fuel. Furthermore, it is designed to be compatible with Cummins engines, ensuring that it meets the specific requirements and standards of these engines ¹.

Installation and Usage

Proper installation and usage of the Cummins 4943940 Fuel Drain Tube are crucial for its optimal performance and safety. Installation guidelines typically include ensuring that all connections are secure and that the tube is correctly positioned within the fuel system. Usage procedures may involve specific steps for safely draining fuel, such as ensuring the engine is off and the system is depressurized. Following these guidelines helps maintain the integrity of the fuel system and ensures the safe handling of fuel ³.

Troubleshooting and Maintenance

Common issues with the Cummins 4943940 Fuel Drain Tube may include leaks, blockages, or wear and tear over time. Troubleshooting these issues involves checking for secure connections, clearing any blockages, and inspecting the tube for signs of damage. Regular maintenance practices, such as periodic inspection and cleaning, can help prolong the life of the component and ensure reliable operation. It is also important to replace the tube if it shows significant wear or if it fails to function correctly ².

Safety Considerations

When working with the Cummins 4943940 Fuel Drain Tube, it is important to observe several safety guidelines and precautions. These include handling flammable materials with care, ensuring proper ventilation when draining fuel, and following correct procedures for the disposal of drained fuel. It is also crucial to wear appropriate personal protective equipment (PPE) when performing maintenance or repairs on the fuel system to protect against fuel splashes or spills ¹.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the automotive and heavy-duty truck industry for producing reliable and high-performance engines and components. The company’s product range includes a variety of engines and parts designed to meet the demanding requirements of heavy-duty applications, ensuring efficiency, durability, and performance ¹.

Cummins Engine Compatibility with Fuel Drain Tube Part 4943940

The Cummins Fuel Drain Tube part number 4943940 is designed to fit a variety of Cummins engines, ensuring efficient fuel management and maintenance. This part is crucial for the proper functioning of the fuel system, allowing for the removal of water and sediment that may accumulate in the fuel tank.

ISB/ISD4.5 CM2150 B119 and ISD4.5 CM2220 D108

The ISB/ISD4.5 CM2150 B119 and ISD4.5 CM2220 D108 engines are part of Cummins’ lineup of medium-duty diesel engines. These engines are known for their reliability and performance in various applications, from vocational to commercial use. The Fuel Drain Tube part 4943940 is compatible with these engines, ensuring that the fuel system remains clean and free from contaminants ³.

ISBE4 CM850

The ISBE4 CM850 engine is another member of Cummins’ robust engine family, designed for heavy-duty applications. This engine is engineered to deliver high power output and efficiency, making it suitable for a range of industries. The Fuel Drain Tube part 4943940 is specifically designed to fit the ISBE4 CM850, facilitating the removal of water and sediment from the fuel tank ³.

QSB4.5 CM850 (CM2850)

The QSB4.5 CM850 (CM2850) engine is a versatile and powerful option in Cummins’ portfolio, often used in agricultural and industrial applications. This engine is built to withstand demanding conditions and provide consistent performance. The Fuel Drain Tube part 4943940 is engineered to fit the QSB4.5 CM850 (CM2850), ensuring that the fuel system operates smoothly and efficiently ³.

By using the Cummins Fuel Drain Tube part 4943940, owners of these engines can maintain the integrity of their fuel systems, preventing potential issues caused by water and sediment accumulation. This part is a critical component in the maintenance and longevity of these engines, ensuring they continue to perform at their best ¹.

Role of Part 4943940 Fuel Drain Tube in Engine Systems

The 4943940 Fuel Drain Tube is an integral component in the fuel system of various engine setups. Its primary function is to facilitate the safe and efficient drainage of fuel from the system, ensuring that any excess or contaminated fuel is removed to maintain optimal engine performance ².

Integration with Fuel System Components

1. Fuel Tank: The Fuel Drain Tube is typically connected to the fuel tank, allowing for the periodic removal of fuel. This is essential for maintenance purposes, such as when the fuel tank needs to be cleaned or inspected ³.

2. Fuel Lines: The tube interfaces with the fuel lines, providing a dedicated pathway for draining fuel without disrupting the regular flow of fuel to the engine. This ensures that the engine continues to operate smoothly during the drainage process ³.

3. Fuel Filters: In systems where fuel filters are present, the Drain Tube may be positioned downstream of the filter. This allows for the removal of fuel that may have bypassed the filter, reducing the risk of contaminants reaching the engine ³.

4. Fuel Pump: The Drain Tube may also be connected near the fuel pump. This setup enables the drainage of fuel that has been pumped but not yet delivered to the engine, aiding in the maintenance of the fuel pump and associated components ³.

5. Plumbing System: The integration of the Fuel Drain Tube within the plumbing system ensures that fuel can be directed to a safe collection point. This is particularly important in scenarios where fuel needs to be disposed of in compliance with environmental regulations ³.

Operational Benefits

• Maintenance Efficiency: By providing a straightforward method for fuel drainage, the 4943940 Fuel Drain Tube enhances the efficiency of routine maintenance tasks ².

• System Integrity: Regular drainage helps in maintaining the integrity of the fuel system by preventing the buildup of contaminants that could otherwise lead to engine performance issues ².

• Safety: The controlled drainage of fuel through a dedicated tube reduces the risk of spills and accidents during maintenance procedures ¹.

Conclusion

In summary, the 4943940 Fuel Drain Tube plays a significant role in the fuel system by ensuring safe and efficient fuel drainage, contributing to the overall reliability and performance of the engine. Its integration with various fuel system components and the operational benefits it provides make it a critical component for maintaining the efficiency and safety of heavy-duty truck fuel systems ¹²³.