4939500
Plain Hose
Cummins®

The Cummins 4939500 Plain Hose is a component designed for use in commercial truck systems. Its purpose is to facilitate the transfer of fluids such as fuel, coolant, or hydraulic fluid within the truck’s system. This hose plays a role in maintaining the efficiency and reliability of the truck’s operations by ensuring that fluids are transported effectively and without leakage ¹.

Basic Concepts of Plain Hoses

Plain hoses are flexible tubes used to convey fluids in various systems. They are constructed from materials that offer durability, flexibility, and resistance to the specific fluids they transport. Common materials include rubber, synthetic elastomers, and reinforced fabrics. These materials are chosen for their ability to withstand pressure, temperature variations, and chemical exposure, ensuring the hose maintains integrity and performance over time ².

Role of the 4939500 Plain Hose in Truck Operation

The Cummins 4939500 Plain Hose is integral to the operation of a truck, particularly within its fluid transfer systems. It functions by providing a pathway for fluids to travel from one component to another, such as from the fuel tank to the engine or within the coolant system. This hose ensures that the fluid transfer is smooth and uninterrupted, contributing to the overall efficiency and performance of the truck ³.

Key Features

The Cummins 4939500 Plain Hose is characterized by its design and construction materials, which are selected to enhance its performance and durability. The hose is made from high-quality materials that offer resistance to the specific fluids it is designed to transport. Its design includes features that ensure a secure fit within the truck’s system, reducing the risk of leaks and improving the efficiency of fluid transfer.

Benefits of Using the 4939500 Plain Hose

Incorporating the Cummins 4939500 Plain Hose into truck systems offers several benefits. These include improved efficiency in fluid transfer, enhanced durability due to its construction materials, and increased reliability in operation. The hose’s design and materials contribute to its ability to withstand the demands of commercial truck use, ensuring long-term performance and reducing the need for frequent replacements.

Troubleshooting and Maintenance

To ensure the longevity and optimal performance of the Cummins 4939500 Plain Hose, it is important to be aware of common issues and how to address them. Signs of wear and tear, such as cracks or leaks, should be monitored regularly. Maintenance steps include checking for proper fit and connection within the system, ensuring there are no obstructions or kinks in the hose, and replacing the hose if any signs of damage are detected. Regular inspection and maintenance can help prevent issues and ensure the hose continues to function effectively ⁴.

Compatibility of Plain Hose Part 4939500 with Cummins Engines

The Plain Hose part 4939500, manufactured by Cummins, is designed to integrate seamlessly with a range of Cummins engines. This hose is engineered to meet the specific requirements of these engines, ensuring optimal performance and reliability.

K19 Engines

For the K19 engines, the Plain Hose part 4939500 is an essential component that facilitates the smooth operation of various systems within the engine. Its design ensures that it can withstand the operational pressures and temperatures associated with these engines, providing a durable and reliable connection.

QSB6.7 M CM2250 Engines

In the QSB6.7 M CM2250 engines, the Plain Hose part 4939500 plays a critical role in maintaining the integrity of the engine’s fluid systems. This hose is specifically engineered to fit the unique design of the QSB6.7 M CM2250, ensuring that it can handle the demands of this engine’s operation.

QSC8.3 CM850 (CM2850) Engines

For the QSC8.3 CM850 (CM2850) engines, the Plain Hose part 4939500 is a key component that ensures the efficient transfer of fluids within the engine. Its design is tailored to fit the specific requirements of these engines, providing a reliable and durable connection that can withstand the operational stresses of the engine.

Grouping of Engines

The Plain Hose part 4939500 is compatible with the K19 engines as well as the QSB6.7 M CM2250 and QSC8.3 CM850 (CM2850) engines. This grouping is based on the similar design and operational requirements of these engines, ensuring that the hose can provide the necessary functionality across different engine models.

Role of Part 4939500 Plain Hose in Engine Systems

The 4939500 Plain Hose is an essential component in various engine systems, facilitating the transfer of fluids and gases under pressure. Its application spans across several key components, each playing a distinct role in the engine’s operation.

Aftercooler

In the aftercooler system, the 4939500 Plain Hose is utilized to convey cooled air from the aftercooler to the engine’s intake system. This ensures that the air entering the combustion chamber is at an optimal temperature, enhancing engine efficiency and performance.

Air Crossover Mounting

For air crossover mountings, the hose is employed to connect different sections of the air intake system. This connection is vital for maintaining a consistent airflow, which is necessary for balanced engine operation and reduced stress on individual components.

Exhaust Manifold Turbocharger Mounting

In exhaust manifold turbocharger mountings, the 4939500 Plain Hose is used to route exhaust gases from the turbocharger to the exhaust manifold. This routing is essential for efficient waste gas evacuation, which in turn optimizes turbocharger performance and overall engine efficiency.

Kit

When included in a kit, the hose serves as a universal connector for various engine components. Its flexibility and durability make it suitable for a wide range of applications, ensuring that different parts of the engine system can be effectively linked together.

Onboard Spares

As an onboard spare, the 4939500 Plain Hose provides a reliable solution for unexpected failures in the engine’s fluid and gas transfer systems. Having a spare hose readily available can significantly reduce downtime and facilitate quicker repairs.

Overhaul Kit

In an overhaul kit, the hose is a key component for restoring the engine’s fluid and gas transfer pathways to their original condition. Its inclusion ensures that all connections are secure and functioning correctly, which is essential for the engine’s longevity and performance.

Turbocharger Arrangement

Within a turbocharger arrangement, the hose is used to connect the turbocharger to other engine components, such as the intercooler or the exhaust system. This connection is vital for maintaining the turbocharger’s efficiency and ensuring that the engine operates within its designed parameters.

Conclusion

The Cummins 4939500 Plain Hose is a critical component in the efficient operation of commercial truck and engine systems. Its design and construction materials ensure durability, reliability, and optimal performance in fluid transfer applications. Regular maintenance and inspection are essential to ensure the longevity and effectiveness of this Cummins part.