3004794
Thermostat Housing
Cummins®

The Thermostat Housing Assembly, part number 3004794, manufactured by Cummins, is a component designed to play a role in the engine cooling system of heavy-duty trucks. Its function is to house the thermostat and facilitate the regulation of coolant flow, which is vital for maintaining optimal engine operating temperatures.

Function and Operation

The Thermostat Housing Assembly operates by controlling the flow of coolant within the engine cooling system. It houses the thermostat, which opens and closes to regulate the flow of coolant based on the engine’s temperature. When the engine is cold, the thermostat remains closed, preventing coolant flow to the radiator and allowing the engine to warm up quickly. As the engine temperature rises, the thermostat opens, allowing coolant to circulate through the radiator, where it is cooled before returning to the engine. This process helps maintain a consistent engine temperature, which is crucial for efficient engine operation and longevity ¹.

Key Features

The design and construction of the Thermostat Housing Assembly incorporate several features that enhance its performance and durability. It is typically made from high-quality materials such as aluminum or durable plastics, which offer resistance to corrosion and high temperatures. The assembly includes precise sealing mechanisms to ensure a leak-free connection to the engine and radiator. Additionally, its design may feature reinforced areas to withstand the pressures and temperatures within the cooling system, ensuring reliable operation under various conditions.

Benefits

The Thermostat Housing Assembly provides several advantages. It contributes to improved engine efficiency by helping maintain optimal operating temperatures, which can lead to better fuel economy and reduced emissions. Consistent engine temperature maintenance is also crucial for preventing engine wear and damage. Furthermore, the assembly’s durable construction and reliable operation enhance the overall reliability of the engine cooling system, ensuring it performs well in varying operating conditions.

Installation and Compatibility

Proper installation of the Thermostat Housing Assembly is crucial for its effective operation. It is designed to be compatible with specific Cummins engine models, ensuring a precise fit and function within the engine cooling system. When installing, it is important to follow manufacturer guidelines to ensure compatibility with other components and to achieve a secure, leak-free connection.

Maintenance and Troubleshooting

Regular maintenance of the Thermostat Housing Assembly is recommended to ensure its longevity and optimal performance. This includes checking for leaks, inspecting the thermostat for proper operation, and ensuring all connections are secure. Common issues may include leaks, thermostat failure, or corrosion. Troubleshooting steps may involve inspecting and replacing the gasket or thermostat, cleaning or replacing corroded components, and ensuring all connections are tight and secure.

Safety Considerations

When working with the Thermostat Housing Assembly, it is important to observe several safety precautions. The assembly and coolant can be extremely hot, so it is crucial to allow the engine to cool before beginning any work. Use appropriate personal protective equipment, such as gloves and safety glasses, to prevent injuries. Follow all manufacturer guidelines for handling, installation, and maintenance to ensure safe operation and prevent accidents.

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 itself as a leader in engine manufacturing, known for its commitment to producing high-quality, reliable automotive components. The company’s expertise in engine technology and its dedication to innovation and customer satisfaction have made it a trusted name in the automotive industry.

Thermostat Housing Assembly for Cummins Engines

The Thermostat Housing Assembly, part number 3004794, is a critical component for maintaining the optimal operating temperature of Cummins engines. This part is designed to fit seamlessly with various Cummins engine models, ensuring efficient thermal management and engine performance.

K19 Engine Series

For the K19 engine series, the Thermostat Housing Assembly is engineered to integrate perfectly with the engine’s cooling system. This assembly plays a pivotal role in regulating the engine’s temperature by controlling the flow of coolant. The precise fit and robust construction of the part ensure that it can withstand the high pressures and temperatures typical of these engines.

The assembly’s design allows for easy installation and removal, facilitating maintenance and repair processes. Its compatibility with the K19 engine series underscores Cummins’ commitment to providing high-quality, reliable parts that enhance engine longevity and performance.

By ensuring a tight seal and efficient coolant flow, the Thermostat Housing Assembly helps prevent overheating and maintains the engine’s efficiency, making it an essential component for the K19 engine series.

Understanding the Integration of Thermostat Housing Assembly

The Thermostat Housing Assembly is an integral component in the orchestration of an engine’s cooling system. Its primary function is to house the thermostat, which regulates the flow of coolant through the engine. This assembly is meticulously designed to ensure a secure fit and efficient operation within the engine system.

Interaction with the Thermostat

The thermostat is nestled within the housing provided by the Thermostat Housing Assembly. As the engine warms up, the thermostat modulates the flow of coolant to maintain optimal operating temperatures. The housing ensures that the thermostat is protected and operates within a stable environment, allowing for precise temperature control.

Connection to the Water Manifold

The thermostat housing assembly interfaces directly with the water manifold. This connection is vital for the distribution of coolant throughout the engine. The housing facilitates a smooth transition of coolant from the manifold to the engine block and back, ensuring consistent cooling across all critical components.

Role in Keel Cooling Systems

In engines equipped with keel cooling systems, the thermostat housing assembly plays a significant role. It ensures that the coolant is effectively circulated through the keel cooling passages, which are often located beneath the engine. This helps in dissipating heat away from the engine, maintaining its efficiency and longevity.

Overall System Integration

The integration of the Thermostat Housing Assembly into the engine system is designed to be seamless. It connects to various components such as the engine block, water pump, and radiator, forming a cohesive cooling network. This assembly not only protects the thermostat but also ensures that the coolant flow is managed efficiently, contributing to the overall performance and reliability of the engine.

Conclusion

The Thermostat Housing Assembly, part number 3004794, is a vital component in the engine cooling system of Cummins engines. Its role in housing the thermostat and regulating coolant flow ensures optimal engine operating temperatures, contributing to engine efficiency, longevity, and reliability. Proper installation, maintenance, and adherence to safety guidelines are essential for the effective operation of this part.