3920401
Expansion Tank Bracket
Cummins®

The Expansion Tank Bracket 3920401, manufactured by Cummins, is a component designed to support the expansion tank within the cooling system of heavy-duty trucks. This bracket plays a role in securing the expansion tank, which is integral to maintaining the cooling system’s efficiency and ensuring the engine operates within optimal temperature ranges. Cummins, a well-regarded manufacturer in the automotive industry, produces this bracket to meet the demanding requirements of heavy-duty applications.

Basic Concepts of Expansion Tank Brackets

An expansion tank bracket serves as a mounting point for the expansion tank in a vehicle’s cooling system. Its function is to securely hold the expansion tank in place, allowing it to manage the fluctuations in coolant volume as the engine heats up and cools down. The expansion tank, in turn, interacts with the radiator and coolant reservoir to maintain pressure and prevent coolant loss. This setup ensures the cooling system operates efficiently, protecting the engine from overheating ¹.

Purpose of the 3920401 Expansion Tank Bracket

The 3920401 Expansion Tank Bracket plays a specific role in the operation of a truck’s cooling system by providing a stable mounting solution for the expansion tank. This stability is vital for the expansion tank to function correctly, as it allows for the proper management of coolant as it expands and contracts with temperature changes. By maintaining the expansion tank in the correct position, the bracket aids in keeping the engine at an optimal temperature, which is crucial for the engine’s longevity and performance.

Key Features

The 3920401 Expansion Tank Bracket is designed with several key features that enhance its functionality. It is constructed from durable materials to withstand the rigors of heavy-duty use. The design includes precise mounting points that ensure a secure fit for the expansion tank. Additionally, the bracket may feature corrosion-resistant coatings or treatments to prolong its lifespan in harsh operating environments.

Benefits of Using the 3920401 Expansion Tank Bracket

Utilizing the 3920401 Expansion Tank Bracket offers several advantages. Its robust construction contributes to improved durability, ensuring long-term reliability in demanding conditions. The design of the bracket also enhances cooling efficiency by securely holding the expansion tank, which plays a role in maintaining the cooling system’s integrity. Furthermore, the bracket is designed for ease of installation, reducing the time and effort required for replacement or upgrade.

Installation Process

Installing the 3920401 Expansion Tank Bracket involves several steps to ensure proper fitting. Begin by locating the correct mounting points on the truck’s frame or designated area. Use the appropriate tools to secure the bracket in place, ensuring it is level and firmly attached. Connect the expansion tank to the bracket, following the manufacturer’s guidelines for alignment and connection. Finally, verify that all connections are secure and that the expansion tank is properly seated within the bracket.

Maintenance and Troubleshooting

Regular maintenance of the Expansion Tank Bracket is important to ensure its longevity and optimal performance. Inspect the bracket for signs of wear or damage, particularly in areas exposed to road debris or harsh weather conditions. Tighten any loose connections and replace any damaged components as needed. Common issues may include corrosion or bracket misalignment, which can be addressed by cleaning, realigning, or replacing parts as necessary.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the automotive industry, with a strong reputation for producing high-quality diesel engines and components. Founded with a commitment to innovation and excellence, Cummins has established itself as a trusted name in the production of reliable and efficient engine parts. Their expertise in engine technology and component design ensures that products like the 3920401 Expansion Tank Bracket meet the high standards required for heavy-duty applications.

Cummins Expansion Tank Bracket 3920401 Compatibility

The Cummins Expansion Tank Bracket part number 3920401 is designed to fit seamlessly with a range of Cummins engines, ensuring proper mounting and functionality of the expansion tank. This bracket is crucial for maintaining the integrity of the cooling system by securely holding the expansion tank in place.

Engine Compatibility

• 4B3.9 and 6B5.9 Engines

The 3920401 bracket is specifically engineered to fit the 4B3.9 and 6B5.9 engines. These engines are part of Cummins’ lineup of industrial and heavy-duty diesel engines, known for their reliability and performance. The bracket’s design ensures it can accommodate the unique layout and mounting points of these engines, providing a stable and secure fit.

• Other Cummins Engines

While the primary focus is on the 4B3.9 and 6B5.9 engines, the 3920401 bracket is also compatible with other Cummins engines within the same series. This compatibility extends to engines that share similar design characteristics and mounting requirements, ensuring that the bracket can be used across a broader range of Cummins engine models.

Installation and Functionality

Proper installation of the 3920401 bracket is essential for the efficient operation of the engine’s cooling system. The bracket’s design allows for easy attachment to the engine block, ensuring that the expansion tank is positioned correctly to manage coolant expansion and pressure. This helps prevent leaks and maintains the overall health of the cooling system.

By using the 3920401 bracket, technicians and operators can be confident that the expansion tank is securely mounted, contributing to the longevity and reliability of the engine.

Role of Part 3920401 Expansion Tank Bracket in Engine Systems

The 3920401 Expansion Tank Bracket is an integral component in the assembly and functionality of various engine systems. It securely mounts the expansion tank, which is part of the cooling system, to the engine structure. This bracket ensures that the expansion tank remains in the correct position and orientation, allowing for efficient operation of the cooling system.

In conjunction with the air cleaner, the Expansion Tank Bracket helps maintain a stable and secure environment for the air intake system. This is particularly important in high-vibration environments where engine components are subject to constant movement.

The bracket also plays a role when integrated with the plumbing system of the engine. It ensures that the coolant lines remain properly aligned and supported, reducing the risk of leaks or disconnections that could lead to engine overheating.

Additionally, when used with a keel cooler, the Expansion Tank Bracket assists in maintaining the structural integrity of the cooling system. The keel cooler, which is often part of the engine’s heat exchange system, relies on a stable and well-supported expansion tank to function effectively. The bracket helps distribute the weight and stress evenly, enhancing the overall reliability of the cooling system ².

Conclusion

The 3920401 Expansion Tank Bracket by Cummins is a critical component in the cooling systems of heavy-duty trucks. Its robust design, ease of installation, and compatibility with various Cummins engines make it a reliable choice for maintaining engine efficiency and longevity. Regular maintenance and proper installation are key to ensuring the bracket performs its function effectively, contributing to the overall performance and reliability of the engine.