4085995
Thermostat
Cummins®

The Cummins 4085995 Thermostat is a component designed for use in commercial trucks, specifically tailored to regulate engine temperature. Its purpose is to maintain optimal operating conditions for the engine, ensuring efficiency and longevity. By controlling the flow of coolant through the engine, this thermostat plays a role in the overall performance and reliability of heavy-duty trucks.

Basic Concepts of a Thermostat

A thermostat is a device that senses the temperature of a system and controls the flow of fluid (coolant) to maintain the system at a set point. In an engine cooling system, the thermostat regulates the temperature by opening and closing at specific temperatures. When the engine is cold, the thermostat remains closed, preventing coolant flow and allowing the engine to warm up quickly. Once the engine reaches the optimal operating temperature, the thermostat opens, allowing coolant to circulate through the engine and radiator, thereby regulating the engine’s temperature ¹.

Purpose and Role of the Cummins 4085995 Thermostat

The Cummins 4085995 Thermostat is engineered to maintain the engine’s optimal operating temperature. By regulating the flow of coolant, it ensures that the engine operates within a temperature range that maximizes efficiency and minimizes wear. This regulation is important for protecting engine components from thermal stress, which can lead to premature failure. The thermostat’s role is to provide a balance between rapid warm-up and consistent temperature maintenance, contributing to the engine’s overall performance and durability ².

Key Features

The Cummins 4085995 Thermostat is characterized by its robust design and the use of high-quality materials. It is constructed to withstand the demanding conditions of heavy-duty applications. Key features include a precision-machined valve and housing, which ensure accurate temperature control. The use of durable materials enhances its resistance to corrosion and wear, contributing to its longevity and reliability in commercial truck operations ³.

Benefits of Using the Cummins 4085995 Thermostat

Utilizing the Cummins 4085995 Thermostat offers several advantages. It contributes to improved engine efficiency by ensuring the engine operates at its optimal temperature, which can lead to better fuel economy. Additionally, by maintaining consistent engine temperatures, it helps prolong the engine’s life by reducing thermal stress on components. The thermostat’s reliable performance under varying operating conditions makes it a valuable component for ensuring the durability and efficiency of commercial trucks.

Installation Considerations

Proper installation of the Cummins 4085995 Thermostat is important for its effective operation. Installation should follow manufacturer guidelines, ensuring the thermostat is correctly positioned within the engine cooling system. Tools required may include a gasket scraper, torque wrench, and coolant. It is important to ensure the thermostat is installed in the correct orientation, with the spring side typically facing towards the engine. Correct installation ensures the thermostat can function as intended, providing reliable temperature regulation.

Troubleshooting Common Issues

Common issues with thermostats include failure to open or close properly, which can lead to overheating or insufficient engine warm-up. Troubleshooting steps may involve checking for proper installation, inspecting the thermostat for signs of wear or damage, and ensuring there are no obstructions in the cooling system. If the thermostat is suspected to be faulty, it may need to be replaced to restore proper engine temperature regulation.

Maintenance Tips

Routine maintenance of the Cummins 4085995 Thermostat involves periodic inspection for signs of wear or damage. Although thermostats are designed to be durable, regular checks can help identify potential issues before they lead to engine problems. Replacement guidelines suggest that the thermostat should be inspected during regular engine maintenance intervals and replaced if signs of failure are detected. Proper maintenance ensures the thermostat continues to provide reliable temperature regulation, contributing to the engine’s efficiency and longevity.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to quality is evident in its product range, which is designed to meet the demanding requirements of heavy-duty applications. Cummins’ focus on innovation and customer satisfaction underscores its position as a leader in the industry.

Thermostat 4085995 Compatibility with Cummins Engines

The thermostat part number 4085995, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This part is important for maintaining optimal engine temperature, ensuring efficient operation and longevity of the engine. Here is a detailed overview of its compatibility with specific engine models:

QSK60 Series

• QSK60 CM500: The thermostat 4085995 is engineered to fit seamlessly within the QSK60 CM500 engine. This model is known for its robust performance and reliability, making it a popular choice in various industrial applications.
• QSK60G: Similarly, the QSK60G engine is designed to utilize the 4085995 thermostat. This engine variant is often favored for its durability and efficiency, providing excellent performance in demanding environments.

QSK78 Series

• QSK78 CM500: The QSK78 CM500 engine is another model that benefits from the 4085995 thermostat. This engine is engineered for high power output and efficiency, making it suitable for heavy-duty applications.

QSM11 Series

• QSM11 CM570: The QSM11 CM570 engine is also compatible with the 4085995 thermostat. This engine is known for its versatility and reliability, making it a preferred choice in various sectors.

The thermostat 4085995 ensures that these engines maintain the correct operating temperature, preventing overheating and ensuring that the engine runs smoothly and efficiently. Its compatibility with these specific models underscores Cummins’ commitment to providing high-quality, reliable parts that enhance engine performance and longevity.

Role of Part 4085995 Thermostat in Engine Systems

The part 4085995 thermostat is a component in maintaining the optimal operating temperature of an engine. It works in conjunction with several other components to ensure efficient engine performance and longevity.

Integration with Housing and Plumbing

The thermostat is typically housed within a thermostat housing, which is a protective enclosure that also facilitates the connection to the engine’s plumbing system. The housing ensures that the thermostat is securely positioned and shielded from external contaminants. The plumbing system, consisting of hoses and pipes, circulates coolant throughout the engine. The thermostat regulates the flow of this coolant by opening and closing at specific temperatures, thereby controlling the engine’s thermal environment.

Interaction with Keel Cooler and Auxiliary Cooling Systems

In engines equipped with a keel cooler, the thermostat plays a role in managing the temperature of the coolant before it enters the keel cooler. The keel cooler is a secondary heat exchanger that further reduces the temperature of the coolant, enhancing the engine’s overall cooling efficiency. The thermostat ensures that the coolant reaching the keel cooler is at an optimal temperature, preventing both overheating and undercooling.

Additionally, in systems with auxiliary cooling, the thermostat works in tandem with these secondary cooling mechanisms. Auxiliary cooling systems are designed to provide additional cooling capacity during high-load operations or in extreme environmental conditions. The thermostat helps modulate the demand on these auxiliary systems by maintaining a stable engine temperature, thus preventing unnecessary strain on the cooling components.

Overall System Contribution

The part 4085995 thermostat is integral to the engine’s thermal management system. By regulating the flow of coolant, it ensures that the engine operates within its designed temperature range. This not only enhances engine efficiency but also contributes to the durability and reliability of the entire system. The thermostat’s precise control over coolant flow helps in reducing thermal stress on engine components, thereby promoting a longer service life for the engine.

Conclusion

The Cummins 4085995 Thermostat is a critical component in the thermal management of commercial truck engines. Its role in regulating coolant flow ensures that the engine operates within optimal temperature ranges, enhancing efficiency, durability, and reliability. Proper installation, maintenance, and understanding of its function are essential for maximizing the benefits of this Cummins part.