4003256
Flexible Hose
Cummins®

Introduction

The Cummins 4003256 Flexible Hose is a vital component in commercial trucks, designed to transport various fluids within the vehicle’s systems. This part is engineered to endure the harsh conditions of commercial trucking, ensuring dependable performance and durability ¹.

Basic Concepts of Flexible Hoses

Flexible hoses in automotive applications connect different system parts, accommodating movement and vibration without compromising fluid integrity. They are made from materials offering flexibility, durability, and resistance to specific fluids. These hoses provide a dynamic connection that can adapt to the vehicle’s mechanical movements while maintaining a secure and leak-free fluid passage ².

Purpose and Role in Truck Operation

This Cummins part is crucial for truck operation, connecting various systems and transporting fluids like coolant, fuel, or hydraulic fluid. It ensures uninterrupted fluid flow between moving components, such as the engine and radiator in a cooling system, or between the fuel tank and engine in a fuel system. This functionality is essential under varying operational conditions ³.

Key Features

The 4003256 Flexible Hose features a material composition for flexibility and fluid resistance, durability for commercial use, and a reinforced design to prevent kinking and maintain shape under pressure. These attributes contribute to its reliable performance over time.

Benefits

Using the 4003256 Flexible Hose offers advantages over rigid hoses, including greater movement flexibility, reduced vibration transmission, and durable construction for harsh conditions. This results in a longer service life and fewer replacements.

Installation Considerations

Proper installation of this part is essential for its function and longevity. Compatibility with system components, using appropriate clamps and supports, and ensuring the hose is not kinked or twisted during installation are critical steps.

Troubleshooting and Maintenance

Common issues with flexible hoses include leaks, kinks, and degradation. Troubleshooting involves inspecting for damage, ensuring secure connections, and checking for proper routing. Regular inspections and timely replacements are vital for reliable performance.

Safety Precautions

When handling the 4003256 Flexible Hose, safety measures are crucial to prevent injury and ensure system integrity. This includes careful handling, checking system pressures, and using personal protective equipment as necessary.

Cummins Overview

Cummins Inc. is a global leader in power solutions, including engines, filtration, and emission solutions. With a history of innovation and quality, Cummins serves customers in approximately 190 countries, providing products that drive economic growth and improve quality of life.

Compatibility with Cummins Engines

The 4003256 Flexible Hose is designed for seamless integration with various Cummins engine models, ensuring reliable connections where flexibility and durability are essential.

K19 Series

The K19 engine series benefits from the 4003256’s design, which provides a robust connection capable of withstanding continuous operation, ensuring smooth and efficient engine performance.

Integration with Other Cummins Engines

Beyond the K19 series, this hose is compatible with other Cummins engines, offering versatility across different models and ensuring optimal performance and reliability in various applications.

Role in Marine Gear Plumbing and Mounting Cooler Systems

Marine Gear Plumbing

In marine gear systems, the 4003256 Flexible Hose facilitates the transfer of fluids like hydraulic oil, coolant, or fuel. Its flexibility is crucial in navigating complex marine gear assemblies, ensuring secure and leak-proof connections in dynamic environments.

Mounting Cooler

For mounting coolers, this hose connects the cooler to the engine’s cooling system, transporting coolant efficiently. Its flexibility is beneficial in scenarios where the cooler or engine is subject to movement, ensuring free and efficient coolant flow and aiding in heat dissipation.

Conclusion

The Cummins 4003256 Flexible Hose is a critical component in commercial trucks and marine gear systems, offering flexibility, durability, and reliable performance. Its compatibility with various Cummins engines and role in critical systems underscore its importance in maintaining efficient vehicle operation.