2870386
Flexible Hose
Cummins®

The Cummins 2870386 Flexible Hose is a specialized component designed for use in heavy-duty truck systems. Its purpose is to facilitate the transfer of fluids between various parts of the truck, ensuring efficient operation and reliability. This hose is integral to maintaining the performance and longevity of the truck’s systems by providing a flexible and durable connection that can withstand the rigors of heavy-duty use.

Basic Concepts of Flexible Hoses

Flexible hoses are components used in automotive and industrial systems to connect different parts, allowing for the transfer of fluids such as coolant, fuel, oil, and hydraulic fluids. Unlike rigid pipes, flexible hoses can accommodate movement and vibration, reducing stress on connected components and minimizing the risk of leaks. They are typically made from a combination of rubber, synthetic materials, and reinforcement layers to ensure durability and flexibility ¹.

Purpose of the Cummins 2870386 Flexible Hose

This Cummins part plays a specific role in the operation of a truck by connecting various systems and transporting essential fluids. It is commonly used in fuel systems, coolant systems, and hydraulic systems. By providing a flexible connection, it allows for the natural movement and vibration that occur during truck operation without compromising the integrity of the fluid transfer. This hose ensures that fluids are delivered efficiently and reliably to their intended destinations within the truck’s systems.

Key Features

The Cummins 2870386 Flexible Hose is designed with several key features that enhance its performance and longevity. These include a material composition that combines synthetic rubber with reinforcement layers for durability and flexibility. The hose is engineered to withstand high pressure and temperature fluctuations, ensuring reliable operation in demanding conditions. Additionally, its design specifications include precise dimensions and fittings to ensure a secure and leak-free connection within the truck’s systems ².

Benefits

Using this Cummins part offers several advantages. It contributes to improved system reliability by providing a durable and flexible connection that can accommodate movement and vibration. This reduces the risk of leaks and system failures. Additionally, the hose’s design enhances the overall performance of the truck by ensuring efficient fluid transfer, which is vital for the proper functioning of engine, cooling, and hydraulic systems.

Installation Considerations

When installing the Cummins 2870386 Flexible Hose, it is important to follow guidelines and best practices to ensure proper alignment and secure connections. This includes verifying compatibility with existing systems, using appropriate clamps and fittings, and ensuring that the hose is routed correctly to avoid kinks or abrasions. Proper installation is key to maximizing the hose’s performance and longevity ³.

Troubleshooting Common Issues

Common problems associated with flexible hoses include leaks, kinks, and degradation due to exposure to harsh conditions. To address these issues, regular inspections should be conducted to identify any signs of wear or damage. If a leak is detected, the hose should be replaced or repaired promptly to prevent fluid loss and system failure. Kinks can often be resolved by rerouting the hose to ensure a smooth path, while degradation may necessitate replacement to maintain system integrity.

Maintenance Tips

To prolong the life of the Cummins 2870386 Flexible Hose, regular maintenance practices should be followed. This includes inspecting the hose for signs of wear, cracks, or leaks at regular intervals. Cleaning the hose and its connections can prevent buildup that may lead to corrosion or restricted flow. Additionally, replacing the hose according to the manufacturer’s recommendations or when signs of significant wear are present will help maintain the efficiency and reliability of the truck’s systems.

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 strong reputation in the automotive industry, particularly for its heavy-duty truck components. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to deliver performance, reliability, and efficiency. Cummins’ commitment to innovation and quality has made it a trusted name in the industry.

Cummins Part 2870386 Flexible Hose Compatibility

This Cummins part is designed to fit seamlessly with a range of Cummins engines, ensuring reliable performance and durability. This flexible hose is engineered to withstand the rigors of various operating conditions, providing a critical connection in the engine’s system.

Compatible Engines

• B5.9 GAS PLUS CM556
• G855 CM558
• K19
• K38
• K50
• N14 G
• QSK19 CM500

Grouping of Compatible Engines

This part is compatible with several engine models, which can be grouped based on their applications and specifications:

• B5.9 GAS PLUS CM556 and G855 CM558: These engines are typically used in medium-duty applications, where the flexible hose ensures smooth operation and reduces wear and tear on the engine components.

• K19, K38, K50: These engines are part of the K Series, known for their robust performance in heavy-duty applications. The flexible hose in these engines helps maintain the integrity of the fuel and coolant systems under high stress.

• N14 G: This engine is widely used in various industries, including construction and transportation. The flexible hose ensures that the engine’s fluid systems remain flexible and resilient, even under extreme conditions.

• QSK19 CM500: This engine is designed for demanding applications, such as power generation and marine use. The flexible hose in this engine is crucial for maintaining the efficiency and reliability of the engine’s fluid transfer systems.

By ensuring compatibility with these engines, this Cummins part provides a reliable solution for maintaining the performance and longevity of the engine’s fluid systems.

Role of Part 2870386 Flexible Hose in Engine Systems

This part is an integral component in various engine systems, facilitating the transfer of fluids and gases under dynamic conditions. Its application spans across multiple subsystems, ensuring efficient operation and maintenance of the engine.

Engine Cooling System

In the engine cooling system, the Flexible Hose connects the engine block to the radiator. This connection allows coolant to circulate, absorbing heat from the engine and dissipating it through the radiator. The flexibility of the hose accommodates the vibrations and movements of the engine, preventing leaks and ensuring consistent coolant flow.

Lubricating Oil System

Within the lubricating oil system, the Flexible Hose is used to connect the oil pan to the oil filter and other critical components. This ensures a steady supply of lubricant to moving parts, reducing friction and wear. The hose’s flexibility is particularly beneficial in railcar installations where equipment is subject to significant movement and vibration.

Air Starter Plumbing

For air starting systems, the Flexible Hose is employed in the air starter plumbing. It connects the air compressor to the air starter, allowing pressurized air to engage the starter mechanism. The hose’s flexibility accommodates the spatial constraints and dynamic movements typical in such installations.

Radiator Plumbing

In radiator plumbing, the Flexible Hose links the radiator to the engine and other cooling components. This setup ensures efficient heat exchange and maintains optimal engine temperature. The hose’s design allows for easy installation and maintenance, reducing downtime during repairs.

Engine Vent System

The Flexible Hose is also utilized in the engine vent system, where it connects the crankcase ventilation to the atmosphere or a collection tank. This helps in managing pressure build-up and expelling contaminants from the engine, contributing to overall engine health and performance.

Onboard Spares and Kit Components

In kits for onboard spares and maintenance, the Flexible Hose is often included due to its versatility and frequent need for replacement. Its inclusion in spare parts kits ensures that maintenance crews have the necessary components to perform repairs quickly and effectively.

Instrumentation and Tachometer Systems

In engine instrument panels and tachometer parts kits, the Flexible Hose may be used to connect sensors and gauges to the engine. This ensures accurate monitoring of engine parameters, aiding in diagnostics and maintenance.

Expansion Tank Connection

Finally, the Flexible Hose is used to connect the expansion tank to the cooling system. This connection allows for the safe expansion of coolant as it heats up, preventing overflow and maintaining system pressure.

Overall, this part plays a significant role in various engine systems, ensuring fluid and gas transfer under dynamic conditions, and contributing to the efficient and reliable operation of the engine.

Conclusion

The Cummins 2870386 Flexible Hose is a critical component in heavy-duty truck systems, designed to facilitate the efficient transfer of fluids and gases under dynamic conditions. Its compatibility with a range of Cummins engines ensures reliable performance and durability. By understanding its key features, benefits, and role in various engine systems, users can ensure proper installation, maintenance, and troubleshooting to maximize the hose’s performance and longevity.