4368395
Expansion Tank
Cummins®

Introduction

The Cummins 4368395 Expansion Tank is a component designed for use in the cooling systems of commercial trucks. Its primary function is to manage the volume and pressure of coolant within the system, ensuring optimal engine temperature and performance. This part is integral to maintaining the efficiency and reliability of the truck’s cooling system.

Basic Concepts of Expansion Tanks

An expansion tank is a vital component in a vehicle’s cooling system. It serves as a reservoir for coolant, accommodating the changes in volume that occur as the coolant heats up and cools down. The tank is connected to the cooling system and allows coolant to expand into it when heated, preventing excessive pressure build-up. Conversely, as the coolant cools and contracts, the tank draws coolant back into the system, maintaining a consistent coolant level. This process helps to stabilize the system’s pressure and temperature, contributing to the engine’s overall efficiency and longevity ¹.

Purpose of the Cummins 4368395 Expansion Tank

The Cummins 4368395 Expansion Tank plays a role in the operation of a truck’s cooling system by managing coolant volume and pressure. As the engine operates, it generates heat, which is transferred to the coolant circulating through the system. This part provides a space for the heated coolant to expand into, preventing pressure from building up to dangerous levels. Additionally, it ensures that there is always sufficient coolant in the system to maintain effective cooling, even as the engine temperature fluctuates ².

Key Features

The Cummins 4368395 Expansion Tank is constructed from high-quality materials, ensuring durability and resistance to corrosion. Its design includes features such as a pressure relief cap, which helps to maintain the system’s pressure within safe limits, and a transparent sight glass, allowing for easy monitoring of the coolant level. The tank’s capacity is sized to accommodate the specific requirements of the truck’s cooling system, ensuring optimal performance.

Benefits

The Cummins 4368395 Expansion Tank offers several advantages for heavy-duty truck applications. Its robust construction and design contribute to improved cooling efficiency, helping to maintain engine temperature within the desired range. The tank’s durability ensures long-term reliability, reducing the need for frequent replacements. Additionally, its compatibility with various truck models and cooling system configurations makes it a versatile choice for fleet managers and maintenance professionals.

Installation Considerations

Proper installation of the Cummins 4368395 Expansion Tank is crucial for ensuring its effective operation within the cooling system. It is important to follow the manufacturer’s guidelines for installation, including ensuring compatibility with the specific truck model and cooling system configuration. Attention to detail during installation, such as proper sealing and secure mounting, will help to prevent leaks and ensure the tank functions as intended.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 4368395 Expansion Tank is important for ensuring its continued performance and longevity. This includes checking the coolant level and condition, inspecting the tank for signs of damage or corrosion, and ensuring that the pressure relief cap is functioning correctly. Common issues that may arise include leaks, pressure build-up, or coolant contamination. Troubleshooting steps may involve inspecting connections for leaks, checking the pressure relief cap for proper operation, and flushing the cooling system if contamination is suspected ³.

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, innovation, and reliability in the commercial truck industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and durability of commercial vehicles.

Cummins Expansion Tank 4368395 Compatibility

The Cummins Expansion Tank part number 4368395 is designed to be compatible with a range of Cummins engines, ensuring efficient coolant management across various applications. This part is integral to the cooling systems of the following engines:

• QSK19
• CM850
• MCRS

These engines, while differing in their specific applications and configurations, share a common requirement for effective coolant expansion management. The expansion tank helps maintain the proper pressure and temperature within the engine’s cooling system, preventing overheating and ensuring optimal performance.

By integrating seamlessly with these engines, the expansion tank 4368395 provides a reliable solution for maintaining the integrity of the cooling system, ensuring that the engines operate efficiently and reliably under various conditions.

Conclusion

The Cummins 4368395 Expansion Tank is a critical component in the cooling systems of commercial trucks, designed to manage coolant volume and pressure effectively. Its robust construction, key features, and compatibility with various Cummins engines make it a reliable and efficient choice for maintaining engine performance and longevity. Proper installation, regular maintenance, and understanding its role within the cooling system are essential for maximizing the benefits of this Cummins part.