4939940
Flexible Hose
Cummins®

The Cummins 4939940 Flexible Hose is a component designed for use in commercial truck operations. Its purpose is to facilitate the transfer of fluids or gases within the truck’s systems, ensuring efficient and reliable performance. The significance of this hose in truck operations lies in its ability to connect various systems and transport essential fluids, contributing to the overall functionality and durability of the vehicle ¹.

Basic Concepts of Flexible Hoses

Flexible hoses are components used in automotive systems to transfer fluids or gases. They are designed to accommodate movement and vibration, which are common in vehicle operations. Flexible hoses function by providing a durable and flexible connection between different parts of a system, allowing for the transfer of substances under varying conditions without compromising the integrity of the system ².

Purpose of the 4939940 Flexible Hose in Truck Operations

This Cummins part plays a specific role in the operation of a commercial truck by connecting various systems and transporting fluids. It is integral to systems that require fluid transfer, such as the engine cooling system, fuel system, or hydraulic systems. The hose ensures that fluids are transferred efficiently and reliably, even under the dynamic conditions experienced by commercial trucks ³.

Key Features

The 4939940 Flexible Hose is characterized by several key features that enhance its performance and longevity. These include its material composition, which is designed to withstand the pressures and temperatures encountered in truck operations. The hose’s flexibility allows it to accommodate movement and vibration, while its durability ensures long-term reliability. Design specifications, such as reinforced layers and precise fitting dimensions, further contribute to its effectiveness in commercial truck applications.

Benefits of Using the 4939940 Flexible Hose

The advantages provided by this part include improved flexibility, which allows it to adapt to the movements of the truck without compromising the fluid transfer. Its resistance to wear and tear ensures longevity, reducing the need for frequent replacements. Additionally, the hose enhances safety and efficiency in fluid transfer systems by maintaining a secure and reliable connection between components.

Installation Considerations

Proper installation of the 4939940 Flexible Hose is crucial for ensuring optimal performance and longevity. Guidelines and best practices for installation include ensuring that the hose is correctly aligned with the systems it connects, using appropriate clamps and fittings, and verifying that there are no kinks or sharp bends that could impede fluid flow or cause damage to the hose.

Troubleshooting Common Issues

Common problems associated with flexible hoses, such as leaks, cracks, or kinks, can be addressed through effective troubleshooting steps. Identifying the source of a leak may involve inspecting the hose for visible damage or using a pressure test to locate the issue. Cracks or kinks can often be prevented through proper installation and regular maintenance, ensuring the hose remains in good condition.

Maintenance Tips

Regular maintenance practices can prolong the life of the 4939940 Flexible Hose. These include routine inspections to check for signs of wear, damage, or leaks. Cleaning the hose and its connections can prevent buildup that may impede fluid flow. Replacement guidelines should be followed to ensure that the hose is replaced before it reaches the end of its service life, maintaining the efficiency and safety of the truck’s systems.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and commitment to quality, Cummins serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor facilities and more than 7,200 dealer locations. The company’s product range includes engines, components, and technologies that power commercial vehicles, equipment, and power generation systems.

Cummins Flexible Hose 4939940 Compatibility

The Cummins Flexible Hose part number 4939940 is designed to fit seamlessly with several of Cummins’ engine models. This part is engineered to provide a reliable connection in various applications, ensuring durability and performance.

QSB6.7 M CM2250

The QSB6.7 M CM2250 engine benefits from the flexibility and resilience of this hose. It is particularly useful in applications where the engine is subjected to frequent movement or vibrations, providing a secure connection that can withstand these conditions.

QSC8.3 CM850 (CM2850)

Similarly, the QSC8.3 CM850 (CM2850) engine also integrates this flexible hose effectively. Given the robust nature of this engine, the hose’s ability to flex and maintain a tight seal is crucial for maintaining optimal performance and preventing leaks.

Both engines, while differing in specifications and applications, share the need for a reliable and flexible connection point. The Cummins Flexible Hose 4939940 is engineered to meet these requirements, ensuring that the engines operate smoothly and efficiently.

Role of Part 4939940 Flexible Hose in Various Systems

Drain System

In the drain system, the 4939940 Flexible Hose facilitates the smooth transfer of fluids from the engine to the designated drain point. Its flexibility allows it to navigate tight spaces and around obstacles, ensuring a secure and leak-free connection. This is particularly important in systems where space is at a premium and traditional rigid piping would be impractical.

Remote Oil System

For remote oil systems, the 4939940 Flexible Hose is integral in connecting the engine to external oil reservoirs or filters. Its flexibility accommodates the necessary movements and vibrations of the engine without compromising the integrity of the oil flow. This ensures consistent lubrication and cooling, which are essential for the engine’s longevity and performance.

Plumbing System

In plumbing applications, the 4939940 Flexible Hose serves as a versatile connector between various components such as pumps, valves, and tanks. Its ability to bend and twist without kinking makes it ideal for complex layouts where traditional pipes would be cumbersome. This flexibility also aids in reducing stress on connected components, thereby enhancing the overall reliability of the plumbing system.

Marine Gear Oil Cooler

For marine gear oil coolers, the 4939940 Flexible Hose plays a key role in circulating oil through the cooling system. The hose’s flexibility allows it to fit within the confined spaces typical of marine environments, ensuring efficient heat dissipation. This helps maintain optimal oil temperature, which is vital for the performance and durability of marine gear systems.

Conclusion

The Cummins 4939940 Flexible Hose is a vital component in commercial truck operations, offering flexibility, durability, and reliable fluid transfer across various systems. Proper installation, maintenance, and troubleshooting are essential to ensure its optimal performance and longevity. Cummins’ commitment to quality and innovation is evident in the design and functionality of this part, making it a reliable choice for commercial vehicle applications.