3907739
Plain Hose
Cummins®

Introduction

The Cummins 3907739 Plain Hose is a component designed for use in commercial trucks. It serves a specific function within the truck’s fluid systems, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and significance is important for maintaining the truck’s performance.

Basic Concepts of Plain Hoses

Plain hoses are flexible tubes used to transport fluids within various systems. They are characterized by their simplicity, lacking reinforcements such as wire or fabric that are found in reinforced hoses. Plain hoses are typically used in applications where the pressure and temperature are moderate, and where flexibility and ease of installation are prioritized ¹.

Purpose of the Cummins 3907739 Plain Hose

This Cummins part plays a role in the fluid systems of commercial trucks by transporting fluids between components. It is part of systems that require a durable yet flexible connection, ensuring that fluids are delivered efficiently without leakage. The hose is designed to handle specific types of fluids, contributing to the proper functioning of the truck’s systems ².

Key Features

The Cummins 3907739 Plain Hose is constructed from materials that provide durability and resistance to the fluids it transports. Its design includes features that enhance performance, such as a smooth inner surface to reduce flow resistance and external ridges for better grip during installation. The hose’s material composition is selected to withstand the operational conditions it will encounter, ensuring longevity and reliability ³.

Benefits

This part offers several benefits, including improved reliability due to its robust construction. Its design allows for efficient fluid transport, contributing to the overall performance of the truck. Additionally, the hose’s durability means it requires less frequent replacement, providing cost savings over time.

Installation Considerations

When installing the Cummins 3907739 Plain Hose, it is important to follow guidelines to ensure compatibility with the truck’s systems. Proper installation involves selecting the correct fittings and ensuring that the hose is routed to avoid sharp bends or abrasion. Compatibility with various truck models should be verified to ensure optimal performance.

Troubleshooting Common Issues

Common issues with plain hoses include leaks and degradation over time. To address these problems, regular inspections are recommended to identify wear or damage early. If a leak is detected, the hose should be replaced to prevent fluid loss and potential system failure. Degradation can often be mitigated by ensuring the hose is installed correctly and is not exposed to excessive heat or abrasion.

Maintenance Tips

To maintain the Cummins 3907739 Plain Hose, regular inspections are advised to check for signs of wear, cracking, or leaks. Replacement schedules should be established based on the hose’s condition and the manufacturer’s recommendations. Proper maintenance will help ensure the hose continues to perform its function effectively, contributing to the truck’s reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established itself as a trusted name in the commercial truck industry. The company’s commitment to advancing technology and meeting customer needs is evident in its wide range of products, including the Cummins 3907739 Plain Hose.

Role of Part 3907739 Plain Hose in Engine Systems

Breather System Integration

In the breather system of an engine, the part 3907739 Plain Hose facilitates the release of gases and vapors that accumulate within the crankcase. This is essential for maintaining a balanced pressure environment. The hose connects to the breather valve, allowing the expelled gases to be directed away from the engine compartment, typically into the intake manifold where they can be re-burned. This not only helps in reducing emissions but also ensures that the engine operates within optimal pressure conditions, enhancing overall performance and longevity.

Crankcase Ventilation

Within the crankcase ventilation system, the part 3907739 Plain Hose plays a significant role in managing the circulation of air and gases. It connects various components such as the crankcase ventilation valve and the oil separator. By providing a conduit for these gases to travel, the hose aids in preventing the buildup of harmful contaminants within the crankcase. This is particularly important as it helps in maintaining the cleanliness of the engine oil, thereby ensuring that the lubrication system functions effectively. Proper ventilation also assists in reducing the formation of sludge and other deposits, which can adversely affect engine components over time.

Conclusion

The Cummins 3907739 Plain Hose is a vital component in the fluid systems of commercial trucks, ensuring efficient and reliable fluid transport. Its design and construction contribute to the overall performance and durability of the truck. Regular maintenance and proper installation are key to maximizing the benefits of this part.