3171722
Male Union
Cummins®

The Cummins 3171722 Male Union Fitting is a component designed for use in heavy-duty truck systems. It serves a specific function within the truck’s fluid systems, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and significance is important for maintaining and optimizing the performance of heavy-duty trucks.

Basic Concepts of Male Union Fittings

A Male Union Fitting is a type of pipe fitting that connects two sections of pipe or tubing. It consists of a male threaded end that screws into a female fitting, creating a secure connection. In automotive and industrial settings, these fittings are used to join various components within fluid systems, such as fuel, hydraulic, and coolant systems. They are valued for their ability to provide a leak-proof seal and ease of assembly and disassembly ¹.

Purpose of the 3171722 Male Union Fitting

The 3171722 Male Union Fitting plays a role in the fluid systems of a truck by connecting different sections of the system securely. It ensures that fluids can flow through the system without leakage, which is vital for the proper operation of the truck. This fitting is specifically designed to meet the demands of heavy-duty applications, where durability and reliability are paramount ².

Key Features

The 3171722 Male Union Fitting is constructed from high-quality materials, ensuring durability and resistance to corrosion. Its design includes precise threading to facilitate a secure connection, and it may feature additional elements such as seals or gaskets to enhance its performance. These features contribute to the fitting’s ability to withstand the pressures and temperatures encountered in heavy-duty truck systems ³.

Benefits

Using the 3171722 Male Union Fitting offers several advantages. It contributes to improved system efficiency by ensuring a secure and leak-proof connection. The fitting’s design and material composition enhance the reliability of the fluid system, reducing the likelihood of failures. Additionally, its ease of installation and maintenance makes it a practical choice for heavy-duty truck applications ⁴.

Installation Process

To install the 3171722 Male Union Fitting, first ensure that the mating female fitting is clean and free of debris. Apply a compatible thread sealant to the male threads of the fitting. Carefully screw the male fitting into the female fitting, using a wrench to tighten it to the manufacturer’s specified torque. It is important to avoid over-tightening, which can damage the fitting or the threads ⁵.

Troubleshooting Common Issues

Common issues with Male Union Fittings include leaks and corrosion. If a leak is detected, the fitting should be inspected for proper installation and the presence of any damage. Corrosion can be addressed by cleaning the fitting and applying a corrosion-resistant coating. Regular inspection and maintenance can help prevent these issues ⁶.

Maintenance Tips

To ensure the longevity and optimal performance of the 3171722 Male Union Fitting, regular maintenance is recommended. This includes periodic inspection for signs of wear, corrosion, or leaks. Cleaning the fitting and its connections can prevent the buildup of debris that may lead to issues. Following the manufacturer’s guidelines for maintenance intervals and procedures is advised ⁷.

Cummins Corporation 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 and innovation in the automotive and industrial sectors. The company’s product range includes engines, powertrains, and related components, serving a wide array of applications from on-highway to off-highway and industrial uses.

Compatibility of Male Union Fitting Part 3171722 with Cummins Engines

The Male Union Fitting part 3171722, manufactured by Cummins, is designed to integrate seamlessly with a variety of Cummins engine models. This fitting is crucial for ensuring proper fluid flow and connection between different components within the engine system. Below is a detailed overview of its compatibility with specific engine series:

QSK19 Series

• QSK19 CM2350 K105
• QSK19 CM2350 K114
• QSK19 CM850 MCRS

The QSK19 series engines benefit from the Male Union Fitting part 3171722, which is engineered to fit precisely with the fluid systems of these models. This ensures reliable connections and efficient fluid management.

QSK38 Series

• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS

In the QSK38 series, the part 3171722 is compatible with both the CM2150 and CM850 models. This fitting is essential for maintaining the integrity of the fluid pathways in these engines.

QSK45 and QSK50 Series

• QSK45 CM500
• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108

The QSK45 CM500 and the QSK50 series engines, including the CM2150 K107, CM2150 MCRS, and CM2350 K108 models, all utilize the Male Union Fitting part 3171722. This part ensures that the engines’ fluid systems operate smoothly and efficiently.

QSK60 Series

• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60G

The QSK60 series engines, including the CM500, CM850 MCRS, and QSK60G models, are designed to work with the part 3171722. This fitting is critical for the proper functioning of the fluid systems in these engines.

QSK78 and QSK95 Series

• QSK78 CM500
• QSK95 CM2350 K111
• QSK95 CM2350 K113

The QSK78 CM500 and QSK95 series engines, specifically the CM2350 K111 and CM2350 K113 models, are compatible with the Male Union Fitting part 3171722. This ensures that the engines’ fluid systems are well-maintained and function optimally.

QSV91 Series

• QSV91-G4 CM558/CM700 V102
• QSV91G

The QSV91 series engines, including the QSV91-G4 CM558/CM700 V102 and QSV91G models, also utilize the part 3171722. This fitting is essential for the proper operation of the fluid systems in these engines.

By ensuring compatibility with these various engine models, the Male Union Fitting part 3171722 plays a vital role in maintaining the performance and reliability of Cummins engines.

Role of Part 3171722 Male Union Fitting in Engine Systems

The 3171722 Male Union Fitting is integral to the efficient operation and maintenance of various engine systems. Its primary function is to facilitate secure and leak-proof connections between different components, ensuring the smooth transfer of fluids and gases. Here’s how it integrates with several key engine systems:

Fuel System

In the fuel system, the Male Union Fitting is often used in the fuel plumbing to connect the fuel filter head to the fuel pump. This ensures a consistent fuel supply to the engine, minimizing the risk of leaks that could lead to engine performance issues or safety hazards. It also plays a role in the fuel drain system, allowing for efficient removal of contaminants and water from the fuel.

Cooling System

Within the cooling system, the Male Union Fitting is employed in the engine coolant plumbing. It connects the thermostat housing to the engine block, enabling the circulation of coolant to regulate engine temperature. Additionally, it is used in the turbocharger coolant plumbing, ensuring that the turbocharger remains within optimal operating temperatures, thereby enhancing its longevity and performance.

Lubrication System

In the lubrication system, particularly in marine applications, the Male Union Fitting is utilized in the marine gear oil plumbing. It connects various components such as the pump and filter, ensuring a steady flow of lubricant to critical moving parts, reducing friction, and preventing wear.

Turbocharger System

For turbocharged engines, the Male Union Fitting is essential in the turbocharger plumbing. It connects the turbocharger to the intercooler and other components, facilitating the efficient transfer of exhaust gases and coolant. This connection is vital for maintaining the turbocharger’s efficiency and preventing overheating.

Alternative and Upfit Kits

In specialized kits such as the Q45 S.O I Fixture Kit, Q60 S.O I Fixture Kit, Q60 SQI Genset Upfit Kit, and Q60 SQI Ind Upfit Kit, the Male Union Fitting is used to create secure connections in multiduct systems. These connections are crucial for the proper functioning of alternative engine configurations and upfit solutions, ensuring that all components work in harmony.

Check Valve and Drain Systems

The fitting is also employed in check valve systems to maintain the direction of fluid flow and in drain systems to facilitate the removal of unwanted substances from the engine. This helps in maintaining the integrity and efficiency of the engine’s operation.

In summary, the 3171722 Male Union Fitting is a versatile component that enhances the reliability and performance of various engine systems by ensuring secure and efficient fluid and gas connections.

Conclusion

The Cummins 3171722 Male Union Fitting is a critical component in heavy-duty truck systems, ensuring secure and leak-proof connections within fluid systems. Its high-quality construction, precise threading, and compatibility with various Cummins engine models make it a reliable choice for maintaining the efficiency and reliability of heavy-duty trucks. Regular maintenance and proper installation are key to maximizing the benefits of this fitting.