3903946
Hexagon Head Cap Screw
Cummins®

The Cummins 3903946 Flexible Hose is a component designed for use in commercial trucks. It serves a specific function within the truck’s systems, facilitating the transfer of fluids or gases. Its role is significant for the efficient operation of the vehicle, ensuring that various systems can perform their intended functions without interruption.

Basic Concepts of Flexible Hoses

Flexible hoses are components used in automotive and other systems to transfer fluids or gases. They are designed to accommodate movement and vibration, which are common in vehicle operations. These hoses are essential for connecting different parts of a system, allowing for the transfer of substances under varying conditions without the risk of leaks or damage ¹.

Purpose of the 3903946 Flexible Hose in Truck Operation

The 3903946 Flexible Hose is utilized in truck operations to connect specific systems, enabling the transfer of fluids or gases between them. This hose plays a role in maintaining the functionality of these systems by providing a reliable connection that can withstand the dynamic environment of a commercial truck.

Key Features of the 3903946 Flexible Hose

The design and construction of the 3903946 Flexible Hose include features that enhance its performance. It is made from materials that offer flexibility and durability, allowing it to adapt to the movements of the truck while resisting wear and tear. Its construction ensures that it can maintain a secure connection under various operating conditions ².

Benefits of Using the 3903946 Flexible Hose

Utilizing the 3903946 Flexible Hose provides several advantages. Its flexibility allows for greater movement and vibration absorption, which can help prevent damage to the hose and the systems it connects. Additionally, its durability ensures long-term use, reducing the need for frequent replacements. The hose’s design also contributes to safer fluid transfer operations by minimizing the risk of leaks ³.

Installation Considerations

When installing the 3903946 Flexible Hose, it is important to follow guidelines and best practices to ensure proper fitting and secure connections. This includes verifying compatibility with the truck’s existing systems and using appropriate methods to secure the hose in place. Careful installation helps maintain the integrity of the hose and the systems it serves.

Troubleshooting Common Issues

Common issues with the 3903946 Flexible Hose may include leaks or reduced flexibility. Addressing these problems involves identifying the source of the issue and taking steps to resolve it, such as tightening connections or replacing damaged sections of the hose. Regular inspections can help detect potential problems before they lead to more significant issues.

Maintenance Tips

To ensure the longevity and optimal performance of the 3903946 Flexible Hose, regular maintenance is recommended. This includes conducting inspections to check for signs of wear or damage, cleaning the hose as needed, and following a schedule for replacement based on the manufacturer’s guidelines or the condition of the hose.

Cummins: A Brief Overview

Cummins Inc. is a company with a history of providing quality products to the commercial truck industry. Its range of offerings includes engines, components, and technologies designed to enhance the performance and efficiency of trucks. Cummins is known for its commitment to innovation and quality, which is reflected in its products, including the 3903946 Flexible Hose.

Cummins Engine Part 3903946: Flexible Hose Compatibility

The Cummins part number 3903946, a Flexible Hose, is designed to fit seamlessly with a variety of Cummins engines. This part is engineered to provide a reliable connection between different components within the engine system, ensuring optimal performance and durability.

Cummins 4B3.9 and 6B5.9 Engines

The 3903946 Flexible Hose is compatible with both the 4B3.9 and 6B5.9 engines. These engines are known for their robust construction and are often used in heavy-duty applications. The flexible hose ensures that the connection between various parts of the engine remains secure and flexible, accommodating the natural movements and vibrations that occur during operation.

Cummins M11 MECHANICAL and N14 CELECT PLUS Engines

The M11 MECHANICAL and N14 CELECT PLUS engines also benefit from the use of the 3903946 Flexible Hose. These engines are widely used in both on-highway and off-highway applications, including trucks, buses, and construction equipment. The flexible hose provides a critical link in the engine’s system, ensuring that the connection remains intact despite the dynamic nature of these applications.

Cummins QSK60 CM500 and QSM11 CM570 Engines

For the more advanced QSK60 CM500 and QSM11 CM570 engines, the 3903946 Flexible Hose is engineered to meet the stringent demands of these high-performance engines. These engines are designed for demanding applications, such as power generation and marine use, where reliability and efficiency are paramount. The flexible hose ensures that the connection between components remains flexible and secure, even under the most challenging conditions.

Role of Part 3903946 Flexible Hose in Engine Systems

The Part 3903946 Flexible Hose is an integral component in various engine systems, facilitating the efficient transfer of fluids and gases while accommodating the dynamic movements and vibrations inherent in engine operation. Its applications span across multiple subsystems, enhancing both performance and reliability.

Fuel System Integration

In the fuel system, the Flexible Hose connects the Fuel Pump EBM to the engine, ensuring a secure and leak-free passage for fuel. This connection is vital for maintaining consistent fuel pressure and flow, which are essential for optimal engine performance. The hose’s flexibility allows it to withstand the vibrations generated by the engine without compromising the fuel line’s integrity.

Cooling System Functionality

Within the cooling system, the Flexible Hose plays a significant role by linking the Radiator to the engine. This connection enables the circulation of coolant, which absorbs heat from the engine and transfers it to the radiator for dissipation. The hose’s flexibility accommodates the thermal expansion and contraction of the coolant, ensuring a reliable cooling process even under varying operating conditions.

Air Intake and Exhaust Systems

In the air intake system, the Flexible Hose is used to connect the Air Cleaner to the engine. This setup ensures that clean, filtered air reaches the combustion chambers, promoting efficient fuel combustion and reducing emissions. Similarly, in the exhaust system, the hose connects various components, allowing for the smooth flow of exhaust gases while absorbing vibrations from the engine.

Electrical and Accessory Connections

The Flexible Hose also facilitates connections in the electrical and accessory systems. For instance, it may be used to route Wiring Harnesses around the engine bay, protecting wires from abrasion and heat. Additionally, it can connect accessories such as the Alternator to its mounting location, ensuring a secure and flexible attachment that can endure the engine’s movements.

Air Management Components

In air management systems, the Flexible Hose connects the Air Shut Down Device to the engine, allowing for the controlled introduction or restriction of air flow as needed. This is particularly important in scenarios where the engine needs to be quickly shut down or when specific air-fuel ratios are required for optimal performance.

Fan and Drive Systems

The Flexible Hose is also employed in fan and drive systems, where it connects the Fan to its bracket and support structure. This connection ensures that the fan can operate efficiently while withstanding the vibrations and movements of the engine. Additionally, it may be used in the drive system to connect various components, ensuring smooth operation and durability.

Mounting and Support Applications

Finally, the Flexible Hose is utilized in various mounting applications, such as connecting the Alternator or Fuel Pump to their respective mounting points. This ensures that these components remain securely attached while allowing for the necessary flexibility to accommodate engine vibrations and movements.

Conclusion

Overall, the Part 3903946 Flexible Hose is a versatile and essential component in engine systems, contributing to the efficient and reliable operation of various subsystems. Its compatibility with a wide range of Cummins engines and its role in facilitating the transfer of fluids and gases make it a critical part of maintaining engine performance and durability.