3979091
Plain Hose
Cummins®

The Cummins 3979091 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 key to maintaining the truck’s performance.

Basic Concepts of Plain Hoses

Plain hoses are a type of tubing used in fluid systems to transport liquids or gases from one point to another. They are characterized by their simple, unadorned design, which distinguishes them from other types of hoses that may have reinforcements or specialized coatings. Plain hoses are valued for their flexibility and ease of installation, making them suitable for a variety of applications within automotive and industrial settings ¹.

Purpose of the Cummins 3979091 Plain Hose

The Cummins 3979091 Plain Hose is integral to the operation of a truck, particularly within its fluid systems. It is responsible for transporting specific fluids, ensuring they reach their intended destinations without leakage or contamination. This hose is part of a system that maintains the truck’s operational integrity, playing a role in functions such as cooling, lubrication, or fuel delivery ².

Key Features

The Cummins 3979091 Plain Hose boasts several key features that enhance its performance and durability. It is constructed from high-quality materials that offer resistance to wear and tear, as well as compatibility with the fluids it transports. Its design specifications include a certain diameter and length, tailored to fit within the truck’s existing system. The hose’s flexibility allows it to navigate the contours of the truck’s undercarriage, while its smooth interior facilitates efficient fluid flow ³.

Benefits

Incorporating the Cummins 3979091 Plain Hose into a truck’s fluid system can lead to improved performance and reliability. Its durable construction ensures longevity, reducing the frequency of replacements. The hose’s design contributes to the efficiency of fluid transport, which in turn supports the truck’s overall operational effectiveness ⁴.

Installation

When installing the Cummins 3979091 Plain Hose, it is important to follow guidelines and best practices to ensure a secure and proper fit. This may involve using specific tools to connect the hose to fittings or other components. Careful attention to detail during installation helps prevent leaks and ensures the hose functions as intended within the truck’s system ⁵.

Maintenance

Regular maintenance of the Cummins 3979091 Plain Hose is recommended to ensure its longevity and optimal performance. This includes periodic inspections for signs of wear, such as cracks or softening, and cleaning as necessary to remove any buildup that could impede fluid flow. Adhering to a maintenance schedule helps identify potential issues before they lead to more significant problems ⁶.

Troubleshooting

Common issues with the Cummins 3979091 Plain Hose may include leaks or degradation over time. Troubleshooting these problems involves a systematic approach to identify the source of the issue, whether it be a faulty connection, material wear, or exposure to incompatible fluids. Once identified, appropriate steps can be taken to resolve the problem, which may include repairing or replacing the hose ⁷.

Safety Considerations

When working with the Cummins 3979091 Plain Hose, it is important to observe safety considerations to protect both the technician and the equipment. This includes handling the hose with care to avoid damage, using appropriate personal protective equipment, and being aware of the potential hazards associated with the fluids being transported ⁸.

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 a commitment to quality, Cummins has established itself as a trusted name in the commercial truck industry. The company’s products, including the Cummins 3979091 Plain Hose, are designed with a focus on reliability and performance, contributing to the success of commercial trucking operations worldwide ⁹.

Cummins Engine Part 3979091: Plain Hose Compatibility

The Cummins part 3979091, a Plain Hose, is designed to fit seamlessly within the engine systems of various Cummins engines. This hose is engineered to ensure reliable fluid transfer and maintain system integrity across different engine models.

Engine Compatibility

• 6C8.3 Engine Series

  • The Plain Hose 3979091 is specifically engineered to integrate with the 6C8.3 engine series. It is crucial for maintaining the fluid pathways necessary for optimal engine performance. This hose ensures that the fluid flow remains uninterrupted, which is vital for the engine’s cooling and lubrication systems.

• Other Cummins Engines

  • While the primary focus is on the 6C8.3 engine series, the Plain Hose 3979091 is also compatible with other Cummins engines. Its design allows for flexibility and ease of installation across various engine models, ensuring that it meets the stringent requirements of Cummins’ engine systems.

Installation and Usage

• Fluid Pathways

  • The Plain Hose 3979091 is integral to the fluid pathways within the engine. It connects various components, ensuring that fluids such as coolant and oil are circulated efficiently. This hose is designed to withstand the high pressures and temperatures typical of engine environments.

• Durability and Performance

  • Constructed from high-quality materials, the Plain Hose 3979091 offers durability and long-lasting performance. It is resistant to wear and tear, ensuring that it maintains its integrity over time and under various operating conditions.

• Ease of Maintenance

  • The design of the Plain Hose 3979091 facilitates easy maintenance and replacement. Technicians can quickly identify and replace the hose if necessary, minimizing downtime and ensuring that the engine continues to operate smoothly.

By integrating the Plain Hose 3979091 into the engine systems, Cummins ensures that the fluid pathways remain efficient and reliable, contributing to the overall performance and longevity of the engine.

Role of Part 3979091 Plain Hose in Engine Systems

The 3979091 Plain Hose is an essential component in various engine systems, facilitating the smooth operation and maintenance of critical engine functions.

Breather System Integration

In the breather system, the 3979091 Plain Hose plays a significant role by connecting the breather valve to the air intake system. This hose allows for the release of pressure build-up within the crankcase, ensuring that contaminants and moisture are effectively vented. By maintaining a consistent pressure within the crankcase, the hose helps in reducing the risk of oil leaks and enhances the overall efficiency of the breather system.

Crankcase Ventilation

Within the crankcase ventilation system, the 3979091 Plain Hose is responsible for channeling crankcase gases to the intake manifold. This process not only helps in reducing emissions but also ensures that the engine operates within optimal parameters. The hose aids in the removal of blow-by gases, which are a mixture of air, fuel, and combustion byproducts that escape past the piston rings. By efficiently managing these gases, the hose contributes to the longevity and performance of the engine.

System Maintenance and Performance

The integration of the 3979091 Plain Hose in these systems is vital for maintaining engine health. Regular inspection and replacement of the hose, when necessary, ensure that the breather and crankcase ventilation systems function without interruption. This proactive maintenance approach helps in preventing potential issues such as oil contamination, reduced engine performance, and increased emissions.

Conclusion

In summary, the 3979091 Plain Hose is a key component in the breather and crankcase ventilation systems, playing a significant role in ensuring the engine operates efficiently and reliably. Its integration into Cummins engines highlights the importance of reliable fluid pathways and the impact on overall engine performance and longevity.