3920061
Tube Nut
Cummins®

Introduction

The Cummins 3920061 Water Inlet Connection is a component designed for use in heavy-duty trucks. It serves a specific function within the engine cooling system, ensuring that coolant is efficiently directed into the engine. This part is integral to maintaining optimal engine temperature and performance, thereby contributing to the overall reliability and efficiency of the vehicle ¹.

Basic Concepts of Water Inlet Connection

Water inlet connections in heavy-duty trucks are designed to facilitate the flow of coolant into the engine. These connections are a vital part of the engine cooling system, which is responsible for dissipating heat generated during engine operation. The coolant absorbs heat from the engine and transfers it to the radiator, where it is cooled before recirculating. The efficiency of this process is influenced by the design and condition of the water inlet connection ².

Purpose of the 3920061 Water Inlet Connection

The 3920061 Water Inlet Connection plays a role in the operation of a truck by facilitating the entry of coolant into the engine. It ensures that coolant is directed into the engine block in a manner that promotes efficient heat transfer. This part is designed to withstand the pressures and temperatures associated with engine operation, ensuring a reliable coolant flow ³.

Key Features

The 3920061 Water Inlet Connection is characterized by its robust design and the materials used in its construction. It is typically made from durable materials that can resist corrosion and high temperatures. The design of this part includes features that enhance its performance and durability, such as precise fittings and seals that prevent leaks and ensure a secure connection.

Benefits

The 3920061 Water Inlet Connection offers several benefits, including improved coolant flow, enhanced engine protection, and increased reliability. By ensuring a consistent and efficient flow of coolant into the engine, this part helps maintain optimal engine temperature. This, in turn, contributes to the longevity of the engine and the overall performance of the truck.

Installation Process

Installing the 3920061 Water Inlet Connection requires careful attention to detail to ensure a proper fit and seal. The process involves cleaning the installation area, applying any necessary sealants, and securing the connection with the appropriate tools. It is important to follow manufacturer guidelines to ensure the connection is installed correctly and functions as intended.

Troubleshooting Common Issues

Common issues associated with water inlet connections include leaks and blockages. These problems can be identified through visual inspection and testing the cooling system for proper function. Troubleshooting steps may involve cleaning the connection, replacing seals, or, in some cases, replacing the connection itself to restore proper coolant flow.

Maintenance Tips

Regular maintenance of the 3920061 Water Inlet Connection is important for ensuring its longevity and optimal performance. This includes periodic inspection for signs of wear or damage, cleaning the connection area, and replacing any worn seals or gaskets. Adhering to a maintenance schedule can help prevent issues and ensure the cooling system operates efficiently.

Compatibility with Cummins Engines

The Water Inlet Connection part 3920061, manufactured by Cummins, is designed to fit a variety of their engines, ensuring efficient water flow and cooling. This part is crucial for maintaining optimal engine temperature and performance. Below is a detailed overview of the engines that are compatible with this part:

Cummins B Series Engines

• B4.5
• B5.9

Cummins ISB/ISD Series Engines

• ISB CM550
• ISB/ISD6.7 CM2150 SN
• ISBE CM800
• ISBE4 CM850
• ISBE4 CM850

Cummins ISC Series Engines

• ISC CM554

Cummins ISF Series Engines

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129

Cummins ISL Series Engines

• ISL CM554

Cummins L Series Engines

• L8.9
• L8.9 L121
• L9.3 L105
• L9.5 L117

Cummins QSB Series Engines

• QSB3.9 30 CM550
• QSB4.5 CM850 (CM2850)
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB5.9 CM550
• QSC8.3 CM554

This compatibility ensures that users can maintain their engines with confidence, knowing that the Water Inlet Connection part 3920061 is designed to fit and function optimally with a wide range of Cummins engines.

Role of Part 3920061 Water Inlet Connection in Engine Systems

The Water Inlet Connection (part 3920061) is an essential component in various engine systems, facilitating the efficient operation of several key elements. Its primary function is to ensure a consistent and reliable water flow into the engine, which is vital for maintaining optimal engine temperature and performance.

Integration with Fuel System Components

In engines equipped with complex fuel systems, the Water Inlet Connection works in tandem with components such as the fuel bypass tube, fuel plumbing, fuel pump plumbing, and fuel supply tube. By maintaining proper engine temperature, it ensures that these fuel system components operate within their specified parameters, thereby enhancing fuel efficiency and reducing the risk of fuel system leaks.

Coordination with Injectors and Plumbing

The Water Inlet Connection also plays a significant role when integrated with injectors and their associated plumbing. Consistent water flow helps in cooling the injectors, which is particularly important in high-performance engines where injectors are subjected to extreme conditions. This cooling effect prolongs the lifespan of the injectors and ensures precise fuel delivery.

Support for Governor and Air Compressor Systems

In engines featuring a governor or an air compressor, the Water Inlet Connection is instrumental in regulating the temperature of these components. The governor, which controls the engine’s speed, and the air compressor, which supplies pressurized air for various functions, both benefit from stable engine temperatures. This stability is achieved through the reliable water flow provided by the Water Inlet Connection.

Enhancing Overall Engine Performance

Beyond specific components, the Water Inlet Connection contributes to the overall performance of the engine. By ensuring that the engine operates within its optimal temperature range, it supports the efficient functioning of the camshaft, harness, wiring, and other critical engine parts. This holistic approach to engine management results in improved performance, reliability, and longevity of the engine.

Application in VE Conversion Kits

In VE conversion kits, where engines are modified for enhanced performance, the Water Inlet Connection is particularly important. It ensures that the modified engine components, such as the injector fuel supply tube and injector fuel tube, receive adequate cooling. This is essential for maintaining the integrity and performance of these high-stress components.

Role in Oil Pan and Mounting Systems

The Water Inlet Connection also interacts with the oil pan and mounting compressor air systems. By keeping the engine cool, it prevents excessive heat buildup that could lead to oil degradation or compromised mounting systems. This interplay ensures that all engine components, from the smallest plumbing tube to the largest oil pan, function harmoniously.

Conclusion

In summary, the Water Inlet Connection (part 3920061) is a foundational component in engine systems, supporting a wide array of functions and interactions among various engine parts. Its role in maintaining optimal engine temperature is indispensable for the efficient and reliable operation of the engine.