4939473
Flexible Hose
Cummins®

The Cummins 4939473 Flexible Hose is a component designed for use in commercial trucks. It serves as a vital link in various systems within these vehicles, facilitating the transport of fluids and contributing to the overall efficiency and reliability of truck operations.

Basic Concepts of Flexible Hoses

Flexible hoses are tubes made from materials that allow them to bend and flex without breaking. In automotive applications, they are used to connect different parts of a system that may move relative to each other. These hoses enable fluid transfer between components while accommodating the movement and vibrations inherent in vehicle operation ¹.

Purpose of the Cummins 4939473 Flexible Hose

The Cummins 4939473 Flexible Hose plays a specific role in the operation of a truck by connecting various systems and transporting fluids. It is designed to link components that may not be fixed in position relative to each other, ensuring a continuous and reliable flow of fluids such as coolant, fuel, or hydraulic fluid. This connectivity is essential for the proper functioning of the truck’s systems.

Key Features

The Cummins 4939473 Flexible Hose is characterized by several key features that enhance its performance and longevity. These include its material composition, which is selected for optimal flexibility and resistance to the fluids it carries. The hose’s design incorporates elements that ensure durability under the demanding conditions found in commercial truck applications. Additionally, its flexibility allows it to accommodate the movements and vibrations typical in truck operations without compromising the integrity of the fluid transfer.

Benefits of Using the Cummins 4939473 Flexible Hose

Utilizing the Cummins 4939473 Flexible Hose offers several advantages. It provides improved system flexibility, allowing for more dynamic connections between components. This flexibility reduces stress on connections, potentially leading to fewer leaks and a more reliable system. The hose’s durable construction contributes to its longevity, offering enhanced durability in the face of harsh operating conditions. Furthermore, by ensuring a secure and flexible connection, it may contribute to increased system efficiency.

Installation Considerations

When installing the Cummins 4939473 Flexible Hose, it is important to follow guidelines and best practices to ensure proper function and longevity. This includes ensuring proper alignment with the components it connects, using appropriate securing methods to maintain its position, and verifying compatibility with the existing system to prevent issues such as leaks or restricted flow.

Troubleshooting Common Issues

Common problems associated with flexible hoses include leaks, kinks, or degradation over time. To address these issues, it is important to perform regular inspections to identify signs of wear or damage. Troubleshooting steps may involve checking for proper alignment and securing, inspecting for kinks or obstructions, and assessing the condition of the hose material for signs of degradation.

Maintenance Tips

Maintaining the Cummins 4939473 Flexible Hose involves regular inspection routines to monitor its condition and identify any signs of wear or damage. It is advisable to look for cracks, leaks, or signs of degradation that could indicate the need for replacement. Adhering to best practices for installation and operation can help prolong the hose’s service life, ensuring continued reliable performance in commercial truck applications.

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 solutions. With a history of innovation and a commitment to quality, Cummins serves customers in approximately 190 countries and territories, providing reliable and efficient power solutions for various industries, including commercial trucking ².

Cummins Engine Part 4939473: Flexible Hose Compatibility

The Cummins part number 4939473, a Flexible Hose, is designed to fit a variety of Cummins engines. This versatile part is engineered to meet the needs of different engine configurations, ensuring a secure and reliable connection. Below is a detailed look at the engines compatible with this flexible hose:

B6.7 Series

• B6.7 CM2670 B164C
• L8.9 CM2670 L134C

The B6.7 and L8.9 engines, both utilizing the CM2670 platform, benefit from the flexibility and durability of part 4939473. This hose is crucial for maintaining the integrity of fluid lines, ensuring smooth operation and longevity of these engines.

ISB/ISD Series

• ISB/ISD4.5 CM2150 B119
• ISB4.5 CM2350 B104
• ISBE CM2150
• ISBE4 CM850

The ISB/ISD and ISBE engines, including the 4.5 and 6.7 variants, are equipped with the CM2150 and CM850 platforms. The part 4939473 is integral in these configurations, providing the necessary flexibility for various fluid transfer applications within these engine models.

QSB Series

• QSB4.5 CM850(CM2850)
• QSB6.7 CM2250
• QSB6.7 CM850(CM2850)
• QSB7 CM2880 B117

The QSB series engines, ranging from 4.5 to 7 liters, utilize the CM850 and CM2850 platforms. The part 4939473 is compatible with these engines, ensuring that the flexible hose can adapt to the specific requirements of each model, facilitating efficient fluid management.

This comprehensive compatibility ensures that the part 4939473 can be reliably used across a wide range of Cummins engines, providing the necessary flexibility and durability for various applications.

Role of Part 4939473 Flexible Hose in Engine Systems

The 4939473 Flexible Hose is an essential component in various engine systems, facilitating the efficient transfer of fluids and gases between different parts. Its application spans across several key areas:

Accessories

In engine accessories, the 4939473 Flexible Hose is often used to connect components such as turbochargers, intercoolers, and air intake systems. Its flexibility allows for dynamic movement and vibration absorption, ensuring a secure and durable connection. This is particularly important in high-performance engines where components undergo significant stress and movement.

Fuel System

Within the fuel system, the 4939473 Flexible Hose plays a vital role in connecting the fuel tank to the fuel pump and from the fuel pump to the engine. Its design accommodates the necessary bends and angles required in the fuel lines, reducing the risk of leaks and improving the overall reliability of the fuel delivery system. The hose’s resistance to fuel and its ability to withstand pressure fluctuations are key factors in its effectiveness.

Plumbing

In the broader context of engine plumbing, the 4939473 Flexible Hose is utilized for coolant systems, brake lines, and other hydraulic applications. Its flexibility and durability make it ideal for situations where rigid pipes would fail due to engine vibrations or thermal expansion. The hose ensures a consistent flow of fluids, contributing to the efficient operation of cooling and braking systems.

Fuel Filter

Connecting the fuel filter to the fuel lines is another important application of the 4939473 Flexible Hose. It allows for easy installation and replacement of the fuel filter without the need for complex routing of rigid pipes. This simplifies maintenance procedures and reduces the likelihood of fuel line damage during service intervals.

Overall, the 4939473 Flexible Hose enhances the functionality and reliability of various engine systems by providing a flexible, durable, and leak-resistant connection between components.

Conclusion

The Cummins 4939473 Flexible Hose is a critical component in the operation of commercial trucks, ensuring the efficient and reliable transfer of fluids across various engine systems. Its design and material composition are tailored to withstand the demanding conditions of truck operations, providing durability and flexibility. Regular maintenance and proper installation are key to maximizing the lifespan and performance of this part, contributing to the overall efficiency and reliability of truck operations.