3639987
Flexible Hose
Cummins®

The Cummins 3639987 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 between various parts of the engine and other systems. This hose is engineered to withstand the demanding conditions typical of commercial truck operations, ensuring reliable performance and longevity.

Basic Concepts of Flexible Hoses

Flexible hoses are utilized in automotive applications to connect different parts of a system, allowing for movement and vibration without compromising the integrity of the fluid transfer. They are typically made from materials that offer flexibility, durability, and resistance to the fluids they transport. In a truck, these hoses play a role in connecting components such as the engine, transmission, and cooling system, ensuring that fluids like coolant, oil, and fuel are efficiently transported where needed ¹.

Purpose of the Cummins 3639987 Flexible Hose

The Cummins 3639987 Flexible Hose is designed to connect specific systems within a truck, facilitating the transport of fluids essential for the operation of the vehicle. It plays a role in linking components that require flexible connections to accommodate the movement and vibrations inherent in truck operations. The hose is part of the system that ensures fluids are delivered efficiently and reliably to their intended destinations.

Key Features

The Cummins 3639987 Flexible Hose boasts several key features that enhance its performance and durability. It is constructed from materials chosen for their flexibility and resistance to the fluids it transports. The design specifications ensure it can withstand the pressures and temperatures encountered in commercial truck applications. Additionally, its flexibility allows it to accommodate the movement and vibrations typical of truck operations without compromising the integrity of the fluid transfer.

Benefits

Using the Cummins 3639987 Flexible Hose offers several advantages. Its flexibility reduces the risk of leaks that can occur with rigid connections, especially under the stress of truck operations. The durable construction ensures longevity, minimizing the need for frequent replacements. Furthermore, its design facilitates ease of installation, allowing for efficient integration into the truck’s systems.

Installation Considerations

When installing the Cummins 3639987 Flexible Hose, it is important to follow guidelines and best practices to ensure proper function and longevity. Necessary tools should be gathered beforehand, and the installation steps should be carefully followed to avoid common pitfalls such as improper alignment or tension. Attention to detail during installation can prevent issues down the line, ensuring the hose performs as intended.

Troubleshooting Common Issues

Common problems associated with flexible hoses include leaks, kinks, and degradation over time. Identifying these issues early can prevent more significant problems. Troubleshooting steps may involve inspecting the hose for signs of wear, ensuring proper installation, and addressing any environmental factors that may contribute to degradation. Solutions can range from simple adjustments to replacement, depending on the severity of the issue.

Maintenance Tips

Regular maintenance of the Cummins 3639987 Flexible Hose is key to ensuring its longevity and optimal performance. Inspection intervals should be established to check for signs of wear, such as cracks or softening of the material. Addressing these signs early can prevent leaks and other issues. Additionally, keeping the hose clean and free from debris can contribute to its durability.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a broad product range, Cummins has established a reputation for quality and reliability in the commercial truck industry. The company’s commitment to excellence is reflected in its products, including the Cummins 3639987 Flexible Hose, which is designed to meet the rigorous demands of commercial truck applications.

Integration with Cummins Engines

QSK45 Engines

The QSK45 engine series, known for its robust design and high performance, utilizes the Flexible Hose part number 3639987 to maintain fluid integrity and prevent leaks. This hose is specifically crafted to withstand the operational stresses and environmental conditions encountered by the QSK45 engines, ensuring durability and longevity.

CM500 Engines

Similarly, the CM500 engine series benefits from the use of the Flexible Hose part number 3639987. This part is engineered to fit precisely within the CM500’s system, providing a flexible yet robust connection that can endure the demanding conditions of industrial and commercial applications. The hose’s design ensures that it can flex and move with the engine, reducing wear and tear and enhancing overall system efficiency.

Compatibility and Performance

The Flexible Hose part number 3639987 is designed to be compatible with both the QSK45 and CM500 engines, making it a versatile component in Cummins’ engine lineup. Its design allows for easy installation and maintenance, ensuring that the engine can operate at peak performance with minimal downtime. The hose’s flexibility and durability make it an essential part of the engine’s fluid management system, contributing to the overall reliability and efficiency of the engines.

Role of 3639987 Flexible Hose in Engine Systems

The 3639987 Flexible Hose is integral to the efficient operation of various engine systems. Its primary function is to facilitate the smooth transfer of fluids and gases between different components, ensuring optimal performance and reliability.

Breather System Integration

In the breather system, the flexible hose connects the crankcase to the breather valve. This connection allows for the release of pressure build-up within the crankcase, which is essential for maintaining engine lubrication and preventing oil contamination. The hose’s flexibility accommodates the natural movements and vibrations of the engine, ensuring a secure and durable connection.

Crankcase Ventilation

The flexible hose plays a significant role in the crankcase ventilation system by channeling blow-by gases from the crankcase to the intake manifold. This process helps in reducing emissions and improving engine efficiency. The hose’s design ensures that these gases are effectively managed, contributing to a cleaner and more efficient combustion process.

Electronic Control Module (ECM) Kit

In systems involving the electronic control module (ECM) kit, the flexible hose may be used to connect various sensors and actuators to the ECM. This ensures that the ECM receives accurate data from the sensors and can effectively control the actuators. The hose’s flexibility is particularly beneficial in navigating the complex routing required in modern engine compartments.

Engine Harness Kit

Within the engine harness kit, the flexible hose is often employed to protect wiring and cables from engine heat, vibration, and physical damage. By providing a secure pathway for these critical components, the hose ensures the integrity and reliability of the engine’s electrical system. This protection is vital for maintaining consistent performance and preventing potential electrical failures.

Conclusion

The Cummins 3639987 Flexible Hose is a critical component in the operation of commercial trucks, designed to withstand the demanding conditions of truck operations. Its flexibility, durability, and ease of installation make it an essential part of the engine’s fluid management system, contributing to the overall reliability and efficiency of the engines. Regular maintenance and proper installation are key to ensuring its longevity and optimal performance.