4007900
Plain Hose
Cummins®

The Cummins 4007900 Plain Hose is a component designed for use in commercial trucks. It serves a specific function within the vehicle’s fluid systems, contributing to the overall operation and efficiency of the truck. Understanding its purpose and role is fundamental for maintaining the vehicle’s performance and longevity.

Basic Concepts of Plain Hoses

Plain hoses are flexible tubes used to transport fluids within various systems ¹. In the context of heavy-duty trucks, these hoses facilitate the movement of liquids and gases between different components, ensuring the systems operate smoothly. They are constructed to withstand pressure, temperature variations, and the corrosive nature of the fluids they carry ².

Purpose of the Cummins 4007900 Plain Hose

This Cummins part is integral to the truck’s fluid transport system. It is designed to convey specific types of fluids, supporting various systems within the truck. Its role is to provide a reliable pathway for these fluids, ensuring they reach their intended destinations without leakage or contamination.

Key Features

This part is characterized by several key features that enhance its performance and durability. These include a robust material composition that resists wear and tear, flexibility to accommodate the dynamic movements of the truck, and design specifications that ensure a secure fit within the system. These attributes contribute to the hose’s longevity and efficiency.

Benefits of Using Cummins 4007900 Plain Hose

Utilizing this Cummins part offers several advantages. It provides improved reliability in fluid transport, exhibits resistance to the wear and tear associated with heavy-duty use, and is compatible with Cummins systems. These benefits contribute to the overall efficiency and maintenance of the truck’s systems.

Installation Considerations

When installing the 4007900, it is important to follow guidelines and best practices to ensure proper fitting and securement. This includes verifying compatibility with existing systems, using appropriate methods to secure the hose, and ensuring all connections are tight and leak-free. Proper installation is key to the hose’s performance and the system’s integrity.

Maintenance and Care

Maintaining this part involves regular inspection routines to identify signs of wear, such as cracks or leaks. Adhering to best practices for care, such as avoiding kinks and ensuring the hose is not subjected to excessive pressure or temperature, can prolong its service life and maintain system efficiency.

Troubleshooting Common Issues

Common issues with plain hoses, such as leaks, cracks, or blockages, can often be identified through regular inspections. Addressing these problems promptly, by replacing damaged sections or clearing blockages, is important for maintaining the integrity of the fluid transport system and ensuring the truck operates efficiently.

Cummins: A Brief Overview

Cummins Inc. is a leader in the commercial truck industry, known for its commitment to quality and innovation. With a diverse product range that includes engines, filtration systems, and aftermarket parts, Cummins has established a reputation for reliability and performance. The company’s dedication to advancing technology and meeting the needs of its customers underscores its position in the industry.

Cummins Engine Compatibility with Part 4007900

The Plain Hose part number 4007900, manufactured by Cummins, is a critical component in the engine systems of the QSB5.9 CM850 and QSK78 CM500 engines. This hose is integral to the engine’s operation, ensuring the proper flow of fluids and gases within the engine’s system.

In the QSB5.9 CM850 engine, the Plain Hose 4007900 is designed to connect various parts of the engine’s cooling system, ensuring that coolant flows efficiently and maintains the engine’s optimal operating temperature. This hose is also used in the fuel system, where it facilitates the transfer of fuel from the tank to the engine, ensuring a steady and uninterrupted fuel supply.

Similarly, in the QSK78 CM500 engine, the Plain Hose 4007900 plays a crucial role in the engine’s lubrication system. It ensures that oil is distributed evenly throughout the engine, reducing friction and wear on engine components. Additionally, this hose is also used in the exhaust system, where it helps manage the flow of exhaust gases, contributing to the engine’s overall efficiency and performance.

The compatibility of the Plain Hose 4007900 with both the QSB5.9 CM850 and QSK78 CM500 engines underscores its versatility and importance in maintaining the engine’s functionality. This hose is engineered to withstand the high temperatures and pressures typical of these engines, ensuring durability and reliability over time.

Role of Part 4007900 Plain Hose in Engine Systems

The 4007900 Plain Hose is an essential component in various engine systems, facilitating the smooth operation and efficiency of several key elements.

In the breather system, the 4007900 Plain Hose is utilized to manage the airflow within the crankcase. It allows for the release of pressure and the circulation of air, which is vital for maintaining a clean and efficient crankcase environment. This helps in reducing the accumulation of contaminants and ensuring that the engine operates within optimal conditions.

When it comes to crankcase ventilation, the hose plays a significant role in connecting the crankcase to the intake system. This connection enables the evacuation of gases and moisture that accumulate during engine operation. By doing so, it prevents the buildup of harmful substances that could lead to engine wear and decreased performance.

In terms of connections, the 4007900 Plain Hose is often employed to link various components within the engine system. Whether it’s connecting the breather to the air intake or other auxiliary systems, this hose ensures a secure and reliable pathway for fluids and gases. This is particularly important in maintaining the integrity of the engine’s sealed systems, preventing leaks, and ensuring consistent performance.

At the exhaust outlet, the hose may be used in certain configurations to manage the flow of exhaust gases. Although less common, its application here ensures that the exhaust system operates efficiently, contributing to the overall performance and emissions control of the engine.

Overall, the 4007900 Plain Hose is a versatile component that enhances the functionality and reliability of various engine systems through its role in managing airflow, ventilation, and connections.

Conclusion

The Cummins 4007900 Plain Hose is a critical component in the fluid transport systems of commercial trucks, particularly in the QSB5.9 CM850 and QSK78 CM500 engines. Its robust design, compatibility with Cummins systems, and role in various engine functions highlight its importance in maintaining the efficiency and reliability of these engines. Proper installation, maintenance, and prompt troubleshooting of common issues are essential for ensuring the longevity and performance of this hose.