4994939
Fuel Drain Tube
Cummins®

Introduction

The Cummins 4994939 Fuel Drain Hose is a component designed for use in the fuel systems of commercial trucks. Its primary role is to facilitate the safe and efficient drainage of fuel from the system, which is necessary for routine maintenance or in emergency situations where fuel needs to be removed quickly ¹.

Purpose and Function

This Cummins part plays a role in the fuel system by providing a pathway for fuel to be drained from the tank or other components. This function is vital for maintenance procedures, such as filter changes or system cleaning, and can also be important in emergency scenarios where fuel must be removed to address a leak or other issue. The hose allows for controlled drainage, minimizing the risk of spills and ensuring that the process is conducted safely and efficiently ².

Key Features

The Fuel Drain Hose is constructed with high-quality materials that ensure durability and reliability. It is designed to withstand the pressures and temperatures encountered in heavy-duty truck fuel systems. The hose features a robust construction that includes reinforced ends to prevent leaks and ensure a secure connection. Additionally, the hose is designed with flexibility to accommodate the movements and vibrations typical in truck operations, which helps maintain a consistent and reliable seal ³.

Benefits

Using this part offers several advantages. It simplifies fuel system maintenance by providing a dedicated pathway for fuel drainage, which can reduce downtime during service intervals. The hose enhances safety during fuel drainage by containing the fuel within a controlled environment, reducing the risk of spills. Its reliable performance in various operating conditions ensures that it can be depended upon in both routine and emergency situations.

Installation and Usage

Proper installation of the Fuel Drain Hose involves connecting it securely to the fuel system components. This typically requires ensuring that all connections are tight and that the hose is routed in a manner that avoids sharp bends or abrasions. When using the hose for fuel drainage, it is important to follow manufacturer guidelines to ensure safe and efficient operation. This includes verifying that the drainage area is well-ventilated and that any spills are contained and cleaned up promptly.

Troubleshooting and Maintenance

Common issues with the Fuel Drain Hose may include leaks at the connection points or damage to the hose itself. Troubleshooting these issues involves inspecting the hose and connections for signs of wear or damage and making repairs or replacements as necessary. Regular maintenance of the hose includes checking for cracks or deterioration and ensuring that all connections remain secure. Keeping the hose clean and free from debris can also help maintain its performance.

Safety Considerations

When working with the Fuel Drain Hose, it is important to follow safety practices to prevent accidents. This includes ensuring that the work area is well-ventilated to avoid the buildup of fuel vapors, which can be hazardous. It is also important to handle fuel with care to prevent spills, which can create a fire hazard. Using appropriate personal protective equipment, such as gloves and safety glasses, is recommended when working with fuel systems.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions technologies. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. The company is committed to providing reliable and efficient components that meet the demanding requirements of heavy-duty applications.

Cummins Engine Compatibility with Fuel Drain Hose Part 4994939

The Cummins Fuel Drain Hose part number 4994939 is designed to fit a variety of Cummins engines, ensuring efficient fuel management and maintenance. This part is important for the proper functioning of the fuel system, helping to prevent contamination and ensuring the longevity of the engine.

B6.7 Series Engines

The B6.7 series engines, including the B6.7 CM2670 and QSB6.7 CM850 (CM2850), are equipped with the 4994939 fuel drain hose. This hose is integral to the fuel system’s drainage process, allowing for the removal of water and sediment that can accumulate in the fuel tank. Proper drainage is important for maintaining engine performance and preventing potential damage from contaminants.

ISB/ISD 6.7 Series Engines

The ISB/ISD 6.7 series engines, such as the ISB/ISD6.7 CM2150 SN, also utilize the 4994939 fuel drain hose. This hose is designed to fit seamlessly into the fuel system architecture of these engines, ensuring that the fuel remains clean and free of impurities. The compatibility of this part with the ISB/ISD 6.7 series engines highlights its versatility and importance in maintaining engine efficiency.

ISBE Series Engines

The ISBE series engines, including the ISBE CM2150 and ISBE4 CM850, are another set of engines that benefit from the 4994939 fuel drain hose. This hose is engineered to fit these engines, providing a reliable means of draining water and sediment from the fuel system. The use of this part in the ISBE series engines underscores its important role in engine maintenance and performance.

QSB7 Series Engine

The QSB7 CM2880 B117 engine is also compatible with the 4994939 fuel drain hose. This hose is designed to integrate with the fuel system of the QSB7 series engine, ensuring that the fuel remains clean and free of contaminants. The compatibility of this part with the QSB7 engine further demonstrates its importance in maintaining engine health and performance.

By ensuring that the 4994939 fuel drain hose is used with the appropriate Cummins engines, maintenance professionals can help to maintain the integrity and efficiency of the fuel system, ultimately contributing to the overall performance and longevity of the engine.

Role of Part 4994939 Fuel Drain Hose in Fuel Plumbing Systems

The 4994939 Fuel Drain Hose is an important component in the fuel plumbing 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.

In the context of fuel plumbing, the 4994939 hose connects to the fuel tank and other critical components such as the fuel filter, fuel pump, and fuel injectors. It provides a dedicated pathway for draining fuel, which is particularly important during maintenance procedures or when the fuel system needs to be purged of impurities.

The hose interfaces with the fuel tank by attaching to a designated drain port, allowing for the controlled release of fuel. This connection is vital for routine maintenance, such as when changing the fuel filter or performing a fuel system clean. The hose also connects to the fuel filter housing, enabling the drainage of any sediment or water that may have accumulated, thereby preventing these contaminants from reaching the fuel injectors and compromising engine efficiency.

Furthermore, the 4994939 hose plays a role in the fuel pump system by providing a means to drain fuel from the pump cavity. This is important for ensuring that the fuel pump operates within specified parameters and avoids potential damage from contaminated fuel.

In fuel injection systems, the hose is used to drain fuel from the injectors and fuel rails. This is particularly relevant in direct injection engines where fuel quality directly impacts injector performance and longevity. By providing a reliable drainage path, the 4994939 hose helps in maintaining the cleanliness and efficiency of the fuel injection system.

Overall, the 4994939 Fuel Drain Hose is a key component in the fuel plumbing system, ensuring that the engine receives clean, uncontaminated fuel while allowing for easy maintenance and system purging.

Conclusion

The Cummins 4994939 Fuel Drain Hose is a vital component in the fuel systems of commercial trucks, designed to facilitate safe and efficient fuel drainage. Its robust construction, compatibility with various Cummins engines, and role in maintaining engine performance make it an essential part for both routine maintenance and emergency situations. Proper installation, regular maintenance, and adherence to safety practices are crucial for maximizing the benefits of this part.