3913759
Flexible Hose
Cummins®

Introduction

The Cummins 3913759 Flexible Hose is a component designed for use in commercial trucks. It serves as a vital link in various systems, facilitating the transfer of fluids and contributing to the overall efficiency and reliability of the vehicle.

Basic Concepts of Flexible Hoses

Flexible hoses are used in automotive systems to connect different components, allowing for movement and vibration without compromising the integrity of the fluid pathways. They are typically made from materials that offer flexibility, durability, and resistance to the fluids they transport. In automotive applications, flexible hoses play a role in fuel, coolant, brake, and hydraulic systems, among others ¹.

Purpose of the Cummins 3913759 Flexible Hose

The Cummins 3913759 Flexible Hose is employed in commercial trucks to connect various systems and transport fluids such as coolant, fuel, or hydraulic fluid. It enables the transfer of these fluids between components that may move relative to each other, ensuring a consistent and reliable flow ².

Key Features

The Cummins 3913759 Flexible Hose is characterized by several key features:

• Material Composition: Constructed from high-quality materials that offer resistance to the specific fluids it transports, as well as to environmental factors such as temperature fluctuations and chemical exposure.
• Flexibility: Designed to accommodate the movement and vibration inherent in commercial truck operations without kinking or leaking.
• Durability: Built to withstand the rigors of heavy-duty use, including exposure to harsh conditions and repeated stress.
• Design Specifications: Features precise dimensions and connection types to ensure a secure and leak-free fit within the truck’s systems.

Benefits

The Cummins 3913759 Flexible Hose offers several advantages:

• Improved Flexibility: Allows for greater movement between connected components, reducing the risk of damage or failure.
• Reduced Risk of Leaks: Its design and material properties minimize the likelihood of leaks, ensuring a consistent fluid flow.
• Enhanced Durability: Built to last under demanding conditions, contributing to the longevity of the truck’s systems.
• Ease of Installation: Designed for straightforward installation, reducing downtime and simplifying maintenance procedures.

Installation Considerations

When installing the Cummins 3913759 Flexible Hose, it is important to follow guidelines and best practices:

• Proper Alignment: Ensure that the hose is correctly aligned with the components it connects to prevent stress and potential damage.
• Securing Methods: Use appropriate clamps and fasteners to secure the hose in place, ensuring a tight and leak-free connection.
• Torque Specifications: Adhere to manufacturer-recommended torque specifications when tightening connections to avoid over-tightening, which can damage the hose or fittings.

Maintenance and Troubleshooting

To maintain the Cummins 3913759 Flexible Hose and ensure its optimal performance:

• Regularly inspect the hose for signs of wear, cracks, or leaks.
• Replace the hose if it shows signs of degradation or if a leak is detected.
• Follow manufacturer guidelines for maintenance intervals and procedures.

Common Applications

The Cummins 3913759 Flexible Hose is typically used in various systems within commercial trucks, including:

• Coolant systems for engine temperature management.
• Fuel systems for delivering fuel to the engine.
• Hydraulic systems for operating brakes, transmissions, and other components.

Safety Precautions

When handling, installing, or maintaining the Cummins 3913759 Flexible Hose, observe the following safety measures:

• Wear appropriate personal protective equipment (PPE) to protect against fluid exposure and potential injuries.
• Ensure the truck is turned off and the engine is cool before beginning any work on the hose.
• Follow all manufacturer safety guidelines and recommendations.

Cummins Engine Compatibility with Part 3913759

The Cummins part 3913759, a Flexible Hose, is designed to fit seamlessly with a range of Cummins engines. This part is engineered to provide a reliable connection in various applications, ensuring optimal performance and durability. Below is a detailed look at how this flexible hose integrates with specific Cummins engine models.

Cummins 4B3.9 and 6C8.3 Engines

The Cummins 4B3.9 and 6C8.3 engines are part of the B Series family, known for their robust performance in a variety of applications. The part 3913759 is specifically engineered to fit these engines, providing a flexible connection that can withstand the rigors of heavy-duty operations. This hose ensures that the fluid flow remains uninterrupted, enhancing the overall efficiency and longevity of the engine.

Cummins B4.5 Engine

The Cummins B4.5 engine is another member of the B Series engines, designed for applications that require reliable and efficient power. The part 3913759 is compatible with the B4.5 engine, offering a flexible connection that can adapt to the engine’s movements and vibrations. This compatibility ensures that the engine operates smoothly and efficiently, with minimal risk of leaks or failures.

Cummins QSB3.9 and QSB6.7 Engines

The Cummins QSB3.9 and QSB6.7 engines are part of the Quantum Series, known for their advanced technology and performance. The part 3913759 is designed to fit these engines, providing a flexible connection that can handle the high-pressure fluid systems found in these models. This compatibility ensures that the engines can operate at peak performance, with the added benefit of reduced maintenance needs.

Cummins 30 CM550 Engine

The Cummins 30 CM550 engine is a high-performance model designed for demanding applications. The part 3913759 is engineered to fit this engine, providing a flexible connection that can withstand the extreme conditions these engines often encounter. This compatibility ensures that the engine can operate reliably and efficiently, even in the most challenging environments.

By ensuring compatibility with these engines, the Cummins part 3913759 provides a reliable and durable solution for maintaining the performance and efficiency of Cummins engines across various applications.

Role of Part 3913759 Flexible Hose in Engine Systems

The part 3913759 Flexible Hose is an essential component in various engine systems, facilitating the transfer of fluids and gases under dynamic conditions. Its application spans across several key areas:

Plumbing Systems

In engine plumbing, the Flexible Hose allows for the conveyance of coolant, oil, and other fluids. Its flexibility accommodates the vibrations and movements inherent in engine operation, ensuring a secure and leak-free connection between rigid plumbing components. This adaptability is particularly important in high-stress environments where traditional rigid pipes might fail ³.

Turbocharger Systems

When integrated into turbocharger systems, the Flexible Hose plays a significant role in managing the flow of exhaust gases. It connects the turbocharger to the exhaust manifold, withstanding high temperatures and pressures. The hose’s flexibility mitigates the thermal expansion and contraction that occur during engine operation, maintaining a robust seal and efficient gas flow.

Turbocharger Oil Plumbing

In turbocharger oil plumbing, the Flexible Hose is used to route lubrication oil to and from the turbocharger. This ensures that the turbocharger’s bearings and other moving parts receive consistent lubrication, even as the engine and turbocharger undergo thermal and mechanical stresses. The hose’s durability and flexibility are vital for prolonged turbocharger lifespan and performance.

Turbocharger Plumbing

For general turbocharger plumbing, the Flexible Hose is employed to connect various components within the turbocharger system. Whether it’s routing intercooler lines, boost pressure lines, or other fluid pathways, the hose’s ability to flex and adapt to movement is essential. This reduces the risk of leaks and failures, contributing to the overall reliability and efficiency of the turbocharger system.

Conclusion

The Cummins 3913759 Flexible Hose is a critical component in the maintenance and operation of commercial trucks and various engine systems. Its design, featuring high-quality materials, flexibility, and durability, ensures reliable fluid transfer and contributes to the overall efficiency and longevity of the vehicle. Proper installation, regular maintenance, and adherence to safety precautions are essential to maximize the benefits of this part.