138089
Hexagon Head Cap Screw
Cummins®

The 138089 Hexagon Head Cap Screw is a specialized fastener produced by Cummins, a renowned manufacturer in the automotive and heavy-duty truck industry. This screw is designed for use in commercial trucks, where it plays a significant role in securing various components and assemblies. Cummins is known for its commitment to quality and innovation, ensuring that their products meet the rigorous demands of commercial vehicle applications ¹.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are commonly used in mechanical assemblies to secure components together. The hexagonal shape of the head provides a stable and secure grip, reducing the risk of slippage during installation or removal. The cap screw design, with its threaded shank, ensures a strong and reliable connection between parts ².

Purpose of the 138089 Hexagon Head Cap Screw in Truck Operation

The 138089 Hexagon Head Cap Screw is integral to the operation and maintenance of commercial trucks. It is used in various applications where secure fastening is required, such as in engine components, chassis assemblies, and other critical areas. The screw helps maintain the structural integrity of these components, ensuring that they remain securely attached under the demanding conditions of commercial truck operation. Its role in these applications contributes to the overall reliability and performance of the vehicle ³.

Key Features

The 138089 Hexagon Head Cap Screw boasts several key features that enhance its performance and durability. It is made from high-quality materials, typically a grade of steel that offers excellent strength and corrosion resistance. The screw features a fine or coarse thread, depending on the specific application, which provides a strong grip and secure fastening. The hexagonal head design allows for easy installation and removal using standard tools, ensuring convenience and efficiency in maintenance procedures.

Benefits

Using the 138089 Hexagon Head Cap Screw offers several benefits. Its high-quality material composition and precise manufacturing ensure enhanced structural integrity, making it a reliable choice for critical applications. The screw’s design facilitates ease of installation, reducing the time and effort required during maintenance. Additionally, the hexagonal head and thread design provide resistance to loosening, ensuring that components remain securely fastened over time.

Installation and Usage

Proper installation of the 138089 Hexagon Head Cap Screw is vital to ensure its performance and longevity. It is recommended to use the appropriate torque specifications provided by the manufacturer to achieve the correct tightening force. This ensures that the screw is securely fastened without over-tightening, which could lead to damage. Using the correct tools, such as a wrench or socket that matches the screw’s head size, is also important to prevent slippage and ensure a proper fit.

Troubleshooting and Maintenance

Common issues with the 138089 Hexagon Head Cap Screw may include loosening or corrosion. Regular inspection and maintenance can help identify and address these issues promptly. If loosening is detected, re-tightening the screw to the specified torque is recommended. In cases of corrosion, cleaning the affected area and applying a suitable corrosion-resistant coating can help prevent further degradation. Proper maintenance practices, such as regular inspections and timely replacements, ensure the longevity and performance of the screw.

Cummins Overview

Cummins is a well-established manufacturer with a strong reputation in the automotive and heavy-duty truck industry. The company has a history of innovation and commitment to quality, producing a wide range of components that meet the demanding requirements of commercial vehicles. Cummins’ dedication to research and development ensures that their products, including the 138089 Hexagon Head Cap Screw, are at the forefront of technology and reliability in the market.

Cummins Part 138089 Hexagon Head Cap Screw in Engine Applications

The Cummins part 138089 Hexagon Head Cap Screw is a critical component in various engine assemblies, ensuring secure fastening and structural integrity. This part is meticulously designed to meet the rigorous demands of engine environments, providing reliable performance across different engine types.

K50 and L10 MECHANICAL Engines

In the K50 and L10 MECHANICAL engines, the Hexagon Head Cap Screw is used extensively for securing various engine components. Its robust design ensures that critical parts remain tightly fastened under high operational stresses, contributing to the overall durability and efficiency of the engine. The precision engineering of this screw allows for easy installation and removal, facilitating maintenance and repair processes.

V28 Engine

The V28 engine also benefits from the use of the Cummins part 138089 Hexagon Head Cap Screw. In this engine, the screw is employed in several key areas, including the attachment of engine covers and the fastening of internal components. The screw’s ability to withstand high temperatures and pressures makes it an ideal choice for ensuring the longevity and reliability of the V28 engine.

Common Applications

Across these engines, the Hexagon Head Cap Screw is utilized in a variety of applications, such as:

• Securing engine covers and housings
• Fastening internal components and brackets
• Ensuring proper alignment and stability of engine parts

The consistent use of this screw in different engine models underscores its versatility and importance in maintaining engine integrity and performance.

Role of Part 138089 Hexagon Head Cap Screw in Engine Systems

The Part 138089 Hexagon Head Cap Screw is integral to the assembly and securement of various components within engine systems. Its robust design ensures reliable fastening across a range of critical applications.

Alternator Mounting

In alternator mounting, the Hexagon Head Cap Screw secures the alternator to the engine block or bracket. This ensures the alternator remains stable during operation, allowing it to generate electricity efficiently without vibration-induced misalignment.

Base Parts

For base parts, these screws provide the necessary tension to hold components in place. They are often used to fasten base plates, ensuring that the engine or other machinery is securely anchored to the foundation, which is essential for operational stability and safety.

Drive Components

Within drive components, such as pulleys and sprockets, the Hexagon Head Cap Screw plays a role in maintaining alignment and tension. This is vital for the efficient transfer of power from the engine to other mechanical parts.

Fan Assembly

In fan assemblies, these screws are used to attach the fan blades to the fan hub. Proper fastening ensures that the fan operates smoothly, providing adequate cooling for the engine and other components.

Heat Exchanger

For heat exchangers, the Hexagon Head Cap Screw is employed to secure the various plates and components that make up the exchanger. This ensures optimal heat transfer and prevents leaks, maintaining the efficiency of the cooling system.

Full Flow Oil Filter

In the full flow oil filter system, these screws are used to attach the filter housing to the engine block. This securement is essential for maintaining the integrity of the oil filtration process, ensuring clean oil circulates through the engine.

Lube Oil Filter-Cooler

Similarly, in lube oil filter-cooler assemblies, the Hexagon Head Cap Screw ensures that the filter and cooler components are tightly secured. This is important for maintaining the performance and longevity of the lubrication system.

Oil Filter/Cooler

For oil filter/cooler units, these screws provide the necessary fastening to keep the components in place. This ensures that the oil is effectively filtered and cooled before re-entering the engine, which is vital for engine health.

Shield, Heat

Heat shields often utilize Hexagon Head Cap Screws to attach the shield to the engine or exhaust system. This protects nearby components from excessive heat, preventing damage and ensuring safe operation.

Water Inlet and Outlet Connections

Finally, in water inlet and outlet connections, these screws are used to secure the hoses and fittings. This ensures a leak-free connection, which is essential for maintaining the integrity of the cooling system and preventing engine overheating.

Conclusion

The 138089 Hexagon Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and engines. Its robust design, high-quality materials, and precise engineering make it an essential fastener for securing various components and assemblies. Proper installation, regular maintenance, and timely replacement ensure the longevity and reliability of this Cummins part, contributing to the overall performance and safety of commercial vehicles.