3900228
Hexagon Head Cap Screw
Cummins®

The Cummins 3900228 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial trucks. It serves to secure various components within the truck’s assembly, ensuring structural integrity and reliable operation. This screw is particularly valued in the trucking industry for its durability and effectiveness in fastening 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 common tools such as wrenches or sockets. The design of the hexagon head provides a secure grip, minimizing the risk of cam-out during use. These screws are commonly used in applications requiring a high degree of torque and are often employed in heavy-duty environments due to their robust construction ².

Purpose and Role in Truck Operation

In the context of commercial truck operations, the Cummins 3900228 Hexagon Head Cap Screw plays a role in securing various components, such as engine parts, chassis elements, and other critical assemblies. Its function is to provide a strong, reliable fastening solution that can withstand the rigors of heavy-duty use. By ensuring that components remain securely attached, this screw contributes to the overall safety and performance of the truck ³.

Key Features

The Cummins 3900228 Hexagon Head Cap Screw is distinguished by several key features that enhance its effectiveness and durability. These include a high-quality material composition, typically a grade of steel that offers excellent strength and resistance to corrosion. The screw features a specific thread type that ensures a tight, secure fit, and its head design is optimized for use with standard tools, facilitating easy installation and removal ⁴.

Benefits

Using the Cummins 3900228 Hexagon Head Cap Screw offers several benefits. Its durable construction ensures long-lasting performance, even in demanding environments. The reliable fastening provided by this screw helps maintain the integrity of truck components, contributing to safer and more efficient operations. Additionally, the ease of use with common tools simplifies installation and maintenance processes ¹.

Installation Guidelines

Proper installation of the Cummins 3900228 Hexagon Head Cap Screw is vital for ensuring optimal performance and longevity. Begin by selecting the appropriate size and grade of screw for the application. Use a wrench or socket that fits the hexagon head securely to avoid damage. Tighten the screw to the specified torque setting to ensure a proper fit without over-tightening, which could damage the screw or the component being fastened ².

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws may include loosening over time due to vibration or corrosion. Regular inspection and maintenance can help identify and address these issues promptly. If a screw appears loose, it should be re-tightened to the specified torque setting. In cases of corrosion, the affected screw may need to be replaced to ensure continued reliable operation ³.

Compatibility and Application

The Cummins 3900228 Hexagon Head Cap Screw is designed for use in various commercial truck assemblies. It is compatible with a range of components within the truck’s structure, including engine parts and chassis elements. When selecting screws for specific applications, it is important to consider factors such as material compatibility, thread type, and torque requirements to ensure optimal performance ⁴.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and commitment to quality, Cummins plays a significant role in the commercial truck industry. The company’s focus on developing reliable and high-performance components underscores its dedication to enhancing the efficiency and safety of commercial vehicles ¹.

Cummins Hexagon Head Cap Screw 3900228 in Engine Applications

The Cummins Hexagon Head Cap Screw part number 3900228 is a critical component in various engine configurations, ensuring structural integrity and secure fastening. This part is designed to withstand high levels of stress and vibration, making it ideal for use in engines where reliability and durability are paramount ².

V903 Engine Series

In the V903 engine series, the Hexagon Head Cap Screw 3900228 is utilized in several key areas. It is commonly found in the engine’s mounting system, where it secures various engine components to the engine block. This ensures that the engine remains stable and properly aligned during operation, reducing the risk of mechanical failure.

The screw is also used in the cylinder head assembly, where it fastens the cylinder head to the engine block. This is crucial for maintaining a tight seal between the cylinder head and the block, preventing leaks and ensuring optimal engine performance. Additionally, the 3900228 screw is employed in the engine’s cooling system, where it helps to secure radiators, hoses, and other cooling components in place ³.

Grouping by Application

• Engine Mounting: The screw is used to attach the engine to the vehicle’s chassis, ensuring that the engine remains securely in place during operation.
• Cylinder Head Assembly: It fastens the cylinder head to the engine block, maintaining a tight seal and preventing leaks.
• Cooling System: The screw helps to secure radiators, hoses, and other cooling components, ensuring efficient heat dissipation.
• Turbocharger Mounting: In turbocharged engines, the 3900228 screw is used to attach the turbocharger to the engine, ensuring proper airflow and performance.

By using the Cummins Hexagon Head Cap Screw 3900228 in these critical areas, the V903 engine series achieves a high level of reliability and performance, making it a preferred choice in various industrial and commercial applications ⁴.

Role of Part 3900228 Hexagon Head Cap Screw in Engine Systems

The part 3900228 Hexagon Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its applications span across multiple systems, ensuring the efficient operation and durability of the engine ¹.

Turbocharger and Plumbing Systems

In turbocharger systems, the Hexagon Head Cap Screw is used to fasten the turbocharger to its mounting arrangement. This secure attachment is vital for the turbocharger’s performance, as it ensures that the unit remains stable under high-speed operation. Additionally, within the plumbing systems, these screws are employed to connect filter plumbing to the engine, maintaining a sealed and efficient flow of lubricating oil and other fluids ².

Valve and Filter Assemblies

For valve assemblies, the Hexagon Head Cap Screw plays a significant role in attaching valve covers and ensuring that the valve mechanisms operate within their designed parameters. In filter assemblies, particularly the lubricating oil filter, these screws are used to secure the filter housing, preventing leaks and ensuring that the filtration process is effective ³.

Engine Control and Wiring Harnesses

In the realm of engine control, the Hexagon Head Cap Screw is utilized in securing the engine control module and wiring harnesses. This ensures that all electrical connections are robust and resistant to vibration, which is essential for the reliable transmission of signals and power within the engine system ⁴.

Fuel Control and Piston Assemblies

Within fuel control systems, these screws are critical for attaching fuel control modules and ensuring precise fuel delivery. In piston assemblies, the Hexagon Head Cap Screw is used in the piston ring compressor and replacer fixture, facilitating the accurate installation and replacement of piston rings, which is fundamental for engine efficiency and longevity ¹.

Lubricating Systems

In lubricating systems, the Hexagon Head Cap Screw is employed in the engine oil primer and pump assemblies. This ensures that the priming and pumping mechanisms are securely fastened, allowing for consistent and reliable lubrication throughout the engine ².

Scavenge and Replacer Systems

Finally, in scavenge systems and replacer fixtures, these screws are used to secure components that manage the removal of unwanted gases and fluids from the engine, ensuring that the engine operates cleanly and efficiently ³.

Conclusion

The Cummins 3900228 Hexagon Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and engines. Its robust design, ease of use, and compatibility with various applications make it an essential fastener in the industry. Proper installation, regular maintenance, and understanding its role in different systems ensure the longevity and reliability of the vehicles it serves ⁴.