3634698
Male Union
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$169.95 $202.24

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

The Cummins 3634698 Male Union is a component designed for use in commercial truck systems. It facilitates efficient fluid transfer by securely connecting different parts of the fluid system. Its role is significant in ensuring the smooth operation of the truck’s fluid dynamics, contributing to overall system performance and reliability.

Basic Concepts of Male Unions

A male union is a type of fitting used in fluid systems to join two pipes or components. It consists of a male threaded end that screws into a corresponding female fitting. Male unions are commonly used in automotive and industrial applications due to their ease of assembly and disassembly, which simplifies maintenance and repair processes. They provide a secure connection that can be easily separated when needed, making them ideal for systems where regular access to components is required 1.

Purpose of the Cummins 3634698 Male Union

The Cummins 3634698 Male Union serves a specific function in the operation of commercial trucks. It connects various components within the fluid system, ensuring a reliable and leak-free connection. This union plays a role in maintaining the integrity of the fluid pathway, which is vital for the efficient operation of the truck’s systems 2.

Key Features

The Cummins 3634698 Male Union is characterized by several key features that enhance its performance and durability. These include its material composition, which is typically designed to withstand the pressures and temperatures encountered in commercial truck applications. The thread type is another critical feature, ensuring a secure fit with compatible female fittings. Additionally, the union is rated for specific pressure levels, indicating its capability to handle the fluid dynamics within the system. Its design characteristics, such as the inclusion of seals or gaskets, further contribute to its effectiveness in preventing leaks and ensuring a tight connection 3.

Benefits

The Cummins 3634698 Male Union offers several advantages that contribute to the efficiency and reliability of commercial truck fluid systems. By providing a secure and leak-free connection, it enhances fluid transfer efficiency. This, in turn, supports the overall performance of the truck’s systems. Furthermore, the union’s design and material properties contribute to enhanced system reliability, reducing the likelihood of failures or leaks. Additionally, the ease of installation and maintenance associated with male unions can lead to potential cost savings through reduced maintenance needs.

Installation Considerations

Proper installation of the Cummins 3634698 Male Union is crucial for ensuring its effectiveness and longevity. Guidelines and best practices for installation include adhering to specified torque values to achieve the correct tightness without over-tightening, which could damage the fitting or the connected components. Alignment of the union with the corresponding female fitting is also important to ensure a proper seal and prevent leaks. Compatibility with other system components should be verified to ensure a seamless integration into the fluid system.

Troubleshooting and Maintenance

Common issues that may arise with the Cummins 3634698 Male Union include leaks, difficulty in disassembly, or damage to the threads. Diagnostic steps for identifying problems may involve visual inspection for signs of wear or damage, checking for proper alignment and torque, and verifying the integrity of seals or gaskets. Maintenance tips to ensure long-term performance and reliability include regular inspection for signs of wear or corrosion, proper cleaning before reassembly, and replacement of seals or gaskets as needed.

Compatibility and Applications

The Cummins 3634698 Male Union is typically used in commercial truck systems where reliable fluid transfer is required. It is compatible with a range of fluid types, depending on the specific application and system configuration. Its versatility makes it suitable for various commercial truck applications, contributing to the efficient operation of the vehicle’s fluid systems.

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 a reputation for quality and innovation in the commercial truck and engine industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and reliability of commercial vehicles.

Cummins Male Union 3634698 Compatibility with K38 and K50 Engines

The Cummins Male Union part number 3634698 is a critical component in the engine systems of the K38 and K50 engines. This part is essential for ensuring the proper functioning and longevity of these engines by facilitating the connection between various fuel and fluid lines.

K38 Engine

In the K38 engine, the Male Union 3634698 is used to connect different fuel and fluid lines, ensuring a secure and leak-proof connection. This part is crucial in maintaining the integrity of the engine’s fuel and fluid systems, which are vital for the engine’s performance and efficiency.

K50 Engine

Similarly, in the K50 engine, the Male Union 3634698 plays a pivotal role in connecting various fuel and fluid lines. Its design and material ensure that it can withstand the high pressures and temperatures typical of engine environments, providing a reliable connection that is essential for the engine’s operation.

Commonality in Usage

Both the K38 and K50 engines utilize the Male Union 3634698 in similar applications, highlighting its versatility and importance in Cummins engine systems. The part’s design and specifications are tailored to meet the demands of these engines, ensuring compatibility and performance.

Role of Part 3634698 Male Union in Engine Systems

The 3634698 Male Union is an essential component in the integration and functionality of various engine systems. Its primary role is to facilitate secure and leak-proof connections between different parts, ensuring efficient operation and performance.

Aftercooler Core and Aftercooler Plumbing

In the aftercooler system, the 3634698 Male Union is utilized to connect the aftercooler core to the aftercooler plumbing. This connection is vital for maintaining the integrity of the cooling process, where the charge air is cooled before entering the engine. The Male Union ensures that there are no leaks in the system, which could otherwise lead to a decrease in engine efficiency and performance.

Oil Control and Supply Connections

For the oil control valve and oil supply connections, particularly in the left and right bank oil control and supply connections, the 3634698 Male Union plays a significant role. It provides a reliable connection point that ensures consistent oil flow to various engine components. This is important for maintaining proper lubrication, which is essential for the longevity and performance of the engine.

Camshaft and Gear Kit

In the context of the camshaft and gear kit, the Male Union is used to connect various plumbing components. This ensures that all parts within the kit function cohesively, contributing to the overall performance of the engine. Proper connections are necessary to prevent oil leaks and maintain the precise operation of the camshaft and associated gears.

Dual STC K38 and K50 Kits

For the dual STC K38 and K50 kits, the 3634698 Male Union is employed to connect different components within these systems. These kits often involve complex plumbing that requires secure and reliable connections to ensure optimal performance. The Male Union helps in achieving this by providing a sturdy and leak-proof joint.

Injector Connections

The Male Union also finds its application in connecting injectors to the engine’s fuel system. This ensures that fuel is delivered efficiently and without leaks, which is crucial for the engine’s performance and emissions control.

Conclusion

In summary, the 3634698 Male Union is a versatile component that enhances the functionality and reliability of various engine systems by providing secure and efficient connections. Its role in maintaining the integrity of fluid pathways and ensuring leak-free operations is critical for the performance and longevity of commercial truck engines.


  1. Bonnick, A. (2004). A Practical Approach to Motor Vehicle Engineering and Maintenance. Elsevier.

  2. Pulkrabek, W. W. (2014). Engineering Fundamentals of the Internal Combustion Engine. Pearson Education.

  3. Xin, Q. (2011). Diesel Engine System Design. Woodhead Publishing.

SPECIFICATIONS

Service Part Topic
05T6-2
Package Dimensions
3.0 x 3.0 x 4.2 in
Weight
0.103 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.