3639085
Flexible Hose
Cummins®

Introduction

The Cummins 3639085 Flexible Hose is a component designed for use in commercial truck systems. It serves as a conduit for various fluids within the truck’s operational systems, facilitating the transfer of these fluids between different parts of the vehicle. This hose is integral to maintaining the efficiency and reliability of the truck’s systems.

Basic Concepts of Flexible Hoses

Flexible hoses are used extensively in automotive and heavy-duty truck systems to connect various components that require fluid transfer. Unlike rigid pipes, flexible hoses can accommodate movement and vibration, which are common in vehicle operations. They are typically made from materials that offer durability, flexibility, and resistance to the fluids they transport. Flexible hoses function by providing a secure, leak-resistant pathway for fluids, ensuring that systems operate smoothly and efficiently ¹.

Purpose of the Cummins 3639085 Flexible Hose

The Cummins 3639085 Flexible Hose plays a specific role in the operation of a truck by connecting critical systems and transporting essential fluids. It is designed to link components that may move relative to each other during operation, such as the engine and transmission, or the fuel tank and engine. The hose facilitates the flow of fluids like coolant, fuel, or hydraulic fluid, ensuring these systems function correctly ².

Key Features

The primary features of the Cummins 3639085 Flexible Hose include its material composition, which is selected for durability and resistance to the specific fluids it transports. The hose’s flexibility allows it to withstand the vibrations and movements inherent in truck operations without cracking or leaking. Design elements such as reinforced ends and smooth inner walls enhance its performance, ensuring efficient fluid flow and longevity ³.

Benefits

Using the Cummins 3639085 Flexible Hose offers several advantages. It contributes to improved system reliability by providing a secure connection that can adapt to the movements of the truck’s components. The reduced risk of leaks compared to rigid hoses ensures that fluids are efficiently transported, minimizing the potential for system failures. Additionally, its durability means it can withstand the harsh conditions of commercial truck operations, offering a longer service life ⁴.

Installation Considerations

Proper installation of the Cummins 3639085 Flexible Hose is crucial for its optimal performance. It should be installed according to the manufacturer’s guidelines, ensuring that all connections are secure and that the hose is not twisted or kinked. Using the correct fittings and ensuring that the hose is routed away from sharp edges or high-temperature areas will help maintain its integrity and performance ⁵.

Troubleshooting Common Issues

Common problems with flexible hoses include leaks and kinks. Leaks can often be traced to improper installation, degradation of the hose material, or damage from external factors. Kinks may occur if the hose is not routed correctly or if it is subjected to excessive pressure. Troubleshooting these issues involves inspecting the hose for signs of wear or damage, ensuring that all connections are secure, and correcting the routing or installation as necessary ⁶.

Maintenance Tips

Regular maintenance of the Cummins 3639085 Flexible Hose is important to prolong its lifespan. This includes periodic inspections for signs of wear, such as cracks, swelling, or leaks. It is also important to check the hose’s connections for tightness and ensure that it is not exposed to conditions that could cause degradation, such as excessive heat or chemical exposure. Replacing the hose at the first sign of significant wear or damage will help prevent system failures ⁷.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and reliability in the commercial truck industry. Its product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial vehicle operations ⁸.

Cummins Flexible Hose 3639085 in Engine Applications

The Cummins Flexible Hose part number 3639085 is a critical component in various engine systems, ensuring the efficient transfer of fluids and gases. This part is designed to accommodate the dynamic movements and vibrations inherent in engine operations, providing flexibility and durability.

K50 Engine Series

In the K50 engine series, the Flexible Hose 3639085 is integral to the engine’s cooling system. It connects the radiator to the engine block, allowing for thermal expansion and contraction without causing stress on the rigid pipes. This flexibility is crucial in maintaining the integrity of the cooling system and preventing leaks or ruptures.

The hose is engineered to withstand high temperatures and pressures, ensuring that the engine operates within its optimal thermal range. Its placement in the K50 engine series is vital for maintaining the engine’s performance and longevity ⁹.

Integration with Other Cummins Engines

While the primary focus here is on the K50 engine series, it is worth noting that the Cummins Flexible Hose 3639085 is also compatible with other Cummins engine models. Its design allows for seamless integration into various engine configurations, providing a reliable solution for fluid transfer across different engine types.

The hose’s flexibility and durability make it a preferred choice for use in engines that require precise fluid management. Its application extends beyond the K50 series, offering a versatile solution for multiple engine systems ¹⁰.

Role of Part 3639085 Flexible Hose in Engine Systems

The part 3639085 Flexible Hose is an essential component in various engine systems, facilitating the efficient transfer of fluids while accommodating the dynamic movements and vibrations inherent in engine operation.

Plumbing Systems

In engine plumbing systems, the 3639085 Flexible Hose serves as a vital link between rigid pipes and moving components. Its flexibility allows it to absorb vibrations and movements, reducing stress on the connections and preventing leaks. This hose is often used in coolant systems, where it connects the radiator to the engine block or thermostat housing. By providing a secure yet flexible pathway for coolant flow, it ensures consistent engine temperature regulation, which is key to maintaining engine efficiency and longevity ¹¹.

Oil Bypass Filter Systems

In oil bypass filter systems, the 3639085 Flexible Hose plays a significant role in maintaining the integrity of the oil filtration process. It connects the bypass filter to the engine’s oil passages, allowing excess oil to flow through the filter when the primary oil filter becomes restricted. This setup ensures that the engine receives clean oil consistently, even under high-stress conditions. The hose’s flexibility is particularly beneficial in this application, as it can accommodate the engine’s movements without compromising the seal, thereby preventing oil leaks and ensuring the bypass filter operates effectively ¹².

Conclusion

The Cummins 3639085 Flexible Hose is a versatile and essential component in various engine and truck systems. Its design, which includes flexibility, durability, and resistance to specific fluids, ensures efficient fluid transfer and system reliability. Proper installation, regular maintenance, and timely replacement are crucial for maximizing the lifespan and performance of this part. Cummins’ reputation for quality and reliability underscores the importance of using their components in demanding commercial vehicle operations.