3406904
Flexible Hose
Cummins®

Introduction

The Cummins 3406904 Flexible Hose is a component designed for use in commercial truck systems. Its purpose is to facilitate the transfer of fluids or gases between various parts of the truck, accommodating the movement and vibration inherent in vehicle operation. This part is integral to maintaining the efficiency and reliability of the truck’s systems.

Basic Concepts of Flexible Hoses

Flexible hoses are utilized in automotive systems to connect different components, allowing for necessary movement and vibration without compromising the integrity of the connection. They are typically made from materials that offer durability, flexibility, and resistance to the specific fluids or gases they transport. In commercial trucks, flexible hoses play a vital role in ensuring that systems can operate smoothly under varying conditions ¹.

Purpose of the 3406904 Flexible Hose

This Cummins part serves a specific function within the truck’s system by connecting components that require fluid or gas transfer. It is designed to handle the dynamic environment of a commercial truck, ensuring that the transfer of substances occurs efficiently and reliably. This hose may be part of systems such as the fuel, coolant, or air intake, contributing to the overall performance and safety of the vehicle.

Key Features

The 3406904 Flexible Hose is characterized by several key features that enhance its functionality. These include a material composition that provides durability and resistance to the elements it encounters, design elements that allow for flexibility and movement, and unique characteristics that may include reinforced layers or specific fittings to ensure a secure connection. These features contribute to the hose’s ability to perform under the demanding conditions of commercial truck operation ².

Benefits

The advantages of using the 3406904 Flexible Hose include improved system reliability due to its design, which accommodates movement and vibration. It also offers a reduced risk of leaks, thanks to its durable construction and secure fittings. The hose’s enhanced durability in harsh operating conditions ensures long-term performance, potentially contributing to the overall efficiency and reliability of the truck.

Installation Considerations

Proper installation of the 3406904 Flexible Hose is crucial for ensuring optimal performance and longevity. Installation techniques should follow manufacturer guidelines, including the use of appropriate tools and methods to secure connections. Attention to detail during installation can prevent common issues such as leaks or improper fitting, ensuring the hose functions as intended within the truck’s system.

Troubleshooting and Maintenance

Regular inspection and maintenance of the 3406904 Flexible Hose can help identify common issues such as leaks, cracks, or kinks early, allowing for timely repairs or replacements. Maintenance practices should include checking for signs of wear or damage, ensuring connections are secure, and replacing the hose as needed to maintain safe and efficient truck operation.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its wide range of products including engines, filtration systems, and aftermarket parts. The company’s reputation for quality and reliability is reflected in its offerings, such as the 3406904 Flexible Hose, which is designed to meet the rigorous demands of commercial truck applications ³.

Compatibility with Cummins Engines

ISM Series Engines

ISM CM570 and ISM CM570/870

The Flexible Hose part 3406904 is compatible with the ISM CM570 and ISM CM570/870 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The hose ensures that the fluid dynamics within these engines are maintained, preventing leaks and ensuring optimal engine performance.

ISM CM876

The ISM CM876 engine also integrates the Flexible Hose part 3406904. This engine variant is designed for high-performance applications, and the hose plays a crucial role in maintaining the fluid pathways necessary for its operation.

ISM11 CM876 SN

The ISM11 CM876 SN engine is another variant that utilizes the Flexible Hose part 3406904. This engine is engineered for demanding conditions, and the hose’s flexibility and durability are essential for its performance.

QSM Series Engine

QSM11 CM570

The QSM11 CM570 engine is also compatible with the Flexible Hose part 3406904. This engine is designed for applications requiring high power output and efficiency, and the hose ensures that the fluid systems operate smoothly and without leaks.

Flexible Hose Component Usage in Engine Systems

The 3406904 Flexible Hose is an essential component in various engine systems, facilitating the transfer of fluids and gases under dynamic conditions. Its role is particularly significant in the following applications:

Brake Systems

In brake systems, the Flexible Hose allows for the conveyance of brake fluid from the master cylinder to the brake calipers or wheel cylinders. This flexibility accommodates the movement and vibration inherent in vehicle operation, ensuring consistent brake performance and safety.

Engine Systems

Within engine systems, the Flexible Hose is utilized to connect various components that require fluid or gas transfer. This includes:

• Engine Brake 411 D 12 / 24 V Kit: The hose facilitates the movement of fluids or gases necessary for the operation of the engine brake system, accommodating the engine’s dynamic movements and ensuring efficient performance.

• Engine Brake 411 E Kit: Similar to the 411 D kit, the Flexible Hose in this application ensures the smooth transfer of fluids or gases, contributing to the reliable functioning of the engine brake system.

• Engine Brake Kit: In general engine brake applications, the Flexible Hose plays a key role in connecting components that require fluid or gas transfer, enhancing the system’s durability and performance under varying operational conditions.

The Flexible Hose’s ability to adapt to the movement and vibration of engine components makes it an invaluable part in maintaining the integrity and efficiency of these systems.

Conclusion

The Cummins 3406904 Flexible Hose is a critical component in commercial truck systems, designed to ensure efficient and reliable fluid and gas transfer under dynamic conditions. Its compatibility with various Cummins engines, including the ISM and QSM series, underscores its versatility and importance in maintaining system integrity and performance. Regular maintenance and proper installation are key to maximizing the benefits of this part, contributing to the overall efficiency and safety of commercial truck operations.