3945679
Flexible Hose
Cummins®

Introduction

The Cummins 3945679 Flexible Hose, a component designed for use in commercial trucks, is manufactured by Cummins Inc. This hose is integral to the truck’s system, facilitating the transfer of fluids between various parts of the vehicle. Its design and construction are tailored to meet the demanding requirements of heavy-duty applications.

Basic Concepts of Flexible Hoses

Flexible hoses are conduits used in fluid transfer systems to connect different components, allowing for movement and vibration without compromising the integrity of the fluid pathway. They are typically constructed from a combination of materials, including rubber, synthetic polymers, and reinforcing fibers, which provide flexibility, durability, and resistance to various environmental factors. The choice of materials is crucial, as it determines the hose’s ability to withstand pressure, temperature variations, and chemical exposure ¹.

Purpose of the 3945679 Flexible Hose

The Cummins 3945679 Flexible Hose serves a specific role in the operation of a truck by connecting systems and transporting fluids essential for the vehicle’s function. It is designed to link components that may move relative to each other, ensuring a continuous and secure fluid pathway. The hose transports fluids such as coolant, fuel, or hydraulic fluid, depending on the application, contributing to the efficient operation of the truck’s systems.

Key Features

The Cummins 3945679 Flexible Hose is characterized by its robust design and the materials used in its construction. It incorporates high-quality rubber and synthetic compounds for the inner layer, providing resistance to the fluids it carries. The outer layer is reinforced with textile or wire braids to enhance durability and protect against abrasion and external pressures. Unique characteristics of this hose include its flexibility, which accommodates the dynamic movements of the truck, and its resistance to wear and tear, ensuring long-term reliability.

Benefits

Utilizing the Cummins 3945679 Flexible Hose in truck systems offers several advantages. Its flexibility allows for greater movement between connected components, reducing the risk of damage from vibration or shifting. The hose’s resistance to wear and tear, along with its ability to withstand high pressures and temperatures, contributes to enhanced safety and efficiency in fluid transfer. Additionally, its durable construction minimizes the need for frequent replacements, offering cost savings over time.

Troubleshooting and Maintenance

Regular inspection and maintenance of the Cummins 3945679 Flexible Hose are recommended to ensure its longevity and optimal performance. Common issues that may arise include signs of wear, such as cracks or abrasions, leakage, or failure due to fatigue. It is advisable to check the hose for any visible damage, ensure connections are secure, and replace the hose if signs of degradation are present. Adhering to a maintenance schedule can prevent unexpected failures and ensure the hose continues to perform its intended function effectively ².

About Cummins

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 itself as a pioneer in diesel engine technology and related components. The company is committed to quality, innovation, and sustainability, providing solutions that meet the evolving needs of the automotive and heavy-duty truck industries.

Cummins Engine Part 3945679: Flexible Hose Compatibility

The Cummins part 3945679, a Flexible Hose, is designed to fit seamlessly within a variety of Cummins engine models. This part is engineered to provide reliable connections and flexibility, ensuring smooth operation and durability across different engine configurations.

ISC CM554 and QSC8.3 CM554

The Flexible Hose part 3945679 is compatible with the ISC CM554 and QSC8.3 CM554 engines. These engines benefit from the hose’s flexibility, which helps in managing the stresses and movements inherent in engine operations. The hose’s design ensures that it can withstand the operational demands of these engines, providing a secure and efficient connection.

ISC CM850, QSB4.5 CM850(CM2850), QSB6.7 CM850(CM2850)

The ISC CM850, QSB4.5 CM850(CM2850), and QSB6.7 CM850(CM2850) engines also utilize the part 3945679 Flexible Hose. These engines, known for their robust performance, require a hose that can handle higher pressures and temperatures. The part 3945679 is engineered to meet these requirements, ensuring that the hose maintains its integrity and functionality under demanding conditions.

QSB7 CM2880 B117

The QSB7 CM2880 B117 engine is another model that integrates the Flexible Hose part 3945679. This engine, designed for heavy-duty applications, benefits from the hose’s ability to provide a flexible connection that can adapt to the engine’s movements and vibrations. The hose’s design ensures that it can endure the rigors of heavy-duty operations, maintaining a reliable connection throughout the engine’s lifecycle.

Role of Part 3945679 Flexible Hose in Engine Systems

Part 3945679 Flexible Hose is integral to the efficient operation of various engine components, particularly in the realms of plumbing and turbocharger systems.

In plumbing systems, this flexible hose facilitates the transfer of fluids, such as coolant or oil, between different parts of the engine. Its flexibility allows it to accommodate the vibrations and movements inherent in engine operation, ensuring a secure and leak-free connection. This is particularly important in high-stress areas where rigid pipes might fail or crack over time.

When it comes to turbocharger plumbing, Part 3945679 plays a significant role. Turbochargers require precise and reliable fluid dynamics to operate efficiently. The flexible hose enables the connection of the turbocharger to the engine’s plumbing system, allowing for the transfer of exhaust gases that drive the turbine. Its flexibility is essential in managing the thermal expansion and contraction that occur due to the high temperatures involved in turbocharger operation.

Overall, Part 3945679 Flexible Hose enhances the durability and reliability of engine systems by providing a robust solution for fluid transfer in dynamic environments.

Conclusion

The Cummins 3945679 Flexible Hose is a critical component in the operation of commercial trucks, offering flexibility, durability, and resistance to various environmental factors. Its design and construction are tailored to meet the demanding requirements of heavy-duty applications, ensuring efficient fluid transfer and long-term reliability. Regular maintenance and inspection are recommended to prevent unexpected failures and ensure optimal performance.