3990574
Elbow Hose Coupling
Cummins®

The Elbow Hose Coupling, part number 3990574, manufactured by Cummins, is a component designed for use in commercial truck systems. It facilitates the connection of hoses at an angle, which is crucial for the efficient transfer of fluids within the truck’s system.

Basic Concepts of Elbow Hose Couplings

Elbow hose couplings are fittings used to join hoses at an angle, allowing for fluid transfer in systems where straight connections are not feasible. These couplings are integral to fluid systems, enabling the redirection of fluid flow without compromising the integrity of the system. In commercial trucks, they are commonly used in various applications, including coolant, fuel, and hydraulic systems ¹.

Purpose of the 3990574 Elbow Hose Coupling

The 3990574 Elbow Hose Coupling is specifically designed to connect hoses at an angle, which is particularly useful in the confined spaces of a truck’s engine compartment. This coupling ensures that fluid transfer is maintained efficiently, even when hoses need to be routed around other components. Its role is vital in maintaining the functionality of the truck’s fluid systems.

Key Features

The 3990574 Elbow Hose Coupling boasts several key features that enhance its performance. It is constructed from durable materials, ensuring longevity and resistance to wear and tear. The design includes precise angles and secure fitting mechanisms to maintain a tight seal, which is crucial for preventing leaks and ensuring efficient fluid flow. Additionally, the coupling may feature unique characteristics such as corrosion resistance or compatibility with specific types of hoses.

Benefits

Using the 3990574 Elbow Hose Coupling offers several advantages. Its durable construction contributes to improved longevity, while its design helps to resist wear and tear, reducing the likelihood of leaks or failures. Enhanced fluid flow efficiency is another benefit, as the coupling is engineered to maintain optimal performance under various operating conditions.

Installation Considerations

When installing the 3990574 Elbow Hose Coupling, it is important to follow guidelines and best practices to ensure optimal performance. Proper alignment of the coupling is crucial to maintain the integrity of the fluid system. Secure fitting is also necessary to prevent leaks and ensure that the coupling can withstand the pressures and temperatures of the system it is part of.

Troubleshooting Common Issues

Common problems associated with elbow hose couplings include leaks, blockages, or connection failures. To troubleshoot these issues, it is important to inspect the coupling for signs of wear or damage, check for proper alignment and secure fitting, and ensure that there are no obstructions in the fluid path. Diagnosing and addressing these problems promptly can help maintain the efficiency of the truck’s fluid systems.

Maintenance Tips

To prolong the lifespan of the 3990574 Elbow Hose Coupling, regular maintenance is recommended. This includes routine inspections for signs of wear or damage, cleaning the coupling to remove any debris that could impede fluid flow, and replacing the coupling if it shows significant signs of deterioration. Adhering to these maintenance practices can help ensure the continued reliability of the truck’s fluid systems.

Cummins: Manufacturer Overview

Cummins Inc. is a well-established manufacturer with a strong reputation in the industry for producing high-quality automotive components. The company has a history of innovation and commitment to excellence, which is reflected in the quality and performance of its products, including the 3990574 Elbow Hose Coupling.

Compatibility of Elbow Hose Coupling Part 3990574 with Cummins Engines

The Elbow Hose Coupling part number 3990574, manufactured by Cummins, is designed to fit seamlessly with a variety of Cummins engines. This part is crucial for ensuring proper fluid flow and maintaining the integrity of the engine’s cooling and exhaust systems. Below is a detailed breakdown of its compatibility with specific engine models:

QSC8.3 CM850 (CM2850) and QSL8.9 CM2150 L141

The Elbow Hose Coupling part 3990574 is compatible with the QSC8.3 CM850 (CM2850) and QSL8.9 CM2150 L141 engines. These engines, part of the Cummins QSC and QSL series, are known for their robust performance and reliability in various industrial and commercial applications. The coupling ensures that the hose connections are secure and leak-free, which is essential for maintaining optimal engine performance.

QSL9 CM2250 and QSL9 CM2350 L102

For the QSL9 CM2250 and QSL9 CM2350 L102 engines, the part 3990574 is also a perfect fit. These engines are part of the Cummins QSL9 series, which is designed for heavy-duty applications. The elbow hose coupling is engineered to handle the high pressures and temperatures associated with these engines, ensuring longevity and reliability.

QSL9 CM554 and QSL9 CM850 (CM2850)

The Elbow Hose Coupling part 3990574 is also suitable for the QSL9 CM554 and QSL9 CM850 (CM2850) engines. These engines are part of the Cummins QSL9 series, known for their durability and efficiency. The coupling’s design allows for easy installation and maintenance, which is crucial for keeping these engines running smoothly.

By ensuring a secure and leak-proof connection, the part 3990574 plays a vital role in the overall performance and longevity of these Cummins engines.

Role of Part 3990574 Elbow Hose Coupling in Engine Systems

The 3990574 Elbow Hose Coupling is an essential component in the fluid management systems of engines, specifically interfacing with the cooler and torque converter oil systems.

Integration with the Cooler System

In the cooler system, the 3990574 Elbow Hose Coupling facilitates the connection between the engine’s cooling passages and the external cooler. This coupling ensures a secure and leak-proof connection, allowing coolant to flow efficiently from the engine to the cooler and back. The design of the coupling minimizes resistance and turbulence in the fluid flow, enhancing the overall cooling efficiency of the system.

Function in the Torque Converter Oil System

Within the torque converter oil system, the 3990574 Elbow Hose Coupling plays a significant role in maintaining the integrity of the oil passages. It connects the torque converter to the transmission cooler lines, ensuring that oil circulates smoothly under high-pressure conditions. This coupling helps in dissipating heat generated during operation, thereby prolonging the lifespan of the torque converter and associated components.

The robust design of the 3990574 Elbow Hose Coupling ensures that it can withstand the dynamic pressures and temperatures encountered in these systems, providing reliable performance over extended periods.

Conclusion

The 3990574 Elbow Hose Coupling is a critical component in the fluid management systems of commercial trucks and Cummins engines. Its durable construction, precise design, and compatibility with various engine models make it an essential part for maintaining efficient fluid transfer and system integrity. Regular maintenance and proper installation are key to ensuring the longevity and reliability of this Cummins part.