4988579
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4988579, is a component manufactured by Cummins, a well-regarded name in the automotive and heavy-duty truck industry. This screw is integral to the maintenance and operation of commercial trucks, providing a reliable fastening solution that ensures the integrity of various truck components.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange that sits against the surface being fastened. This design allows for efficient tightening and loosening using a wrench or socket, while the flange distributes pressure across a larger area, reducing the risk of damage to the fastened material. In the context of truck components, these screws are used to secure parts that require a high degree of stability and resistance to vibration.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of commercial trucks. It is employed in various truck systems where secure fastening is paramount. These systems include, but are not limited to, engine components, chassis assemblies, and body panels. The screw’s design ensures that parts remain firmly in place, even under the strenuous conditions encountered in commercial trucking.

Key Features

The 4988579 boasts several key features that enhance its performance and durability. Its hexagonal flange head design allows for easy and efficient tightening and loosening. The screw is composed of high-quality materials, ensuring resistance to corrosion and wear. Additionally, the flange provides a larger contact area, which helps distribute pressure more evenly and reduces the likelihood of damage to the fastened surface.

Benefits

Using this part in truck maintenance offers several benefits. The design of the screw provides improved fastening security, making it less likely for parts to become loose during operation. Its resistance to vibration ensures that fastenings remain tight even under dynamic conditions. Furthermore, the ease of installation and removal facilitated by the hexagonal head design saves time and labor during maintenance procedures.

Installation and Usage

Proper installation of the 4988579 is vital for ensuring optimal performance and longevity. It is recommended to use the appropriate torque settings specified by the manufacturer to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise the security of the fastening. Best practices include cleaning the fastening area to remove any debris or corrosion that could affect the screw’s performance.

Troubleshooting and Maintenance

Common issues with the 4988579 may include loosening or corrosion. Regular inspection and maintenance can help identify these issues early. If loosening is detected, re-tightening to the recommended torque settings is advised. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosion treatment can help prolong the screw’s service life.

Cummins Overview

Cummins is a manufacturer with a long-standing reputation in the automotive and heavy-duty truck industry. The company has a history of producing high-quality components that meet the demanding requirements of commercial trucking. Cummins’ commitment to quality and innovation is evident in their product line, which includes a wide range of automotive components designed to enhance the performance, reliability, and durability of trucks.

Cummins Engine Part 4988579: Hexagon Flange Head Cap Screw

This Cummins part, a Hexagon Flange Head Cap Screw, is a critical component in the assembly and maintenance of various Cummins engines. This part is designed to provide secure fastening in applications where a robust and reliable connection is essential. The specific design of the Hexagon Flange Head Cap Screw ensures that it can withstand the operational stresses and environmental conditions encountered in engine environments.

Application in Cummins Engines

4B3.9 and ISB3.9 CM2220 B107

The Hexagon Flange Head Cap Screw is utilized in the 4B3.9 and ISB3.9 CM2220 B107 engines for several critical functions. These include securing various engine components, such as covers and housings, to the engine block. The flange head design allows for a larger bearing surface, which helps distribute the load more evenly and reduces the risk of stripping or damage to the mating surfaces. This is particularly important in the compact and high-performance environment of these engines.

6B5.9 and ISB5.9 CM2880 B127

In the larger and more powerful 6B5.9 and ISB5.9 CM2880 B127 engines, the Hexagon Flange Head Cap Screw plays a similar role but on a larger scale. The increased size and power of these engines demand components that can handle higher torque and stress. The flange head design of the 4988579 part ensures that the screws can maintain a tight and secure connection, even under the more demanding conditions of these larger engines.

Importance of the Hexagon Flange Head Cap Screw

The use of the Hexagon Flange Head Cap Screw in Cummins engines is not merely a matter of convenience but a necessity for ensuring the integrity and reliability of the engine assembly. The screw’s design allows for easy and precise installation, which is crucial during both manufacturing and maintenance processes. The flange head provides a larger surface area for the wrench, reducing the likelihood of rounding off the screw head, which can occur with other types of fasteners.

Role of Part 4988579 Hexagon Flange Head Cap Screw in Engine Systems

Compressor

In compressor systems, the 4988579 is instrumental in securing various components that are essential for the efficient operation of the compressor. It is commonly used to fasten the compressor housing to its mounting bracket, ensuring that the housing remains stable under the high pressures and vibrations generated during operation. Additionally, it is utilized in attaching the compressor’s drive mechanism, which includes the coupling of the drive belt or chain to the compressor shaft. This secure attachment is vital for maintaining the alignment and integrity of the drive system, thereby contributing to the overall reliability and performance of the compressor.

Refrigerant System

Within refrigerant systems, the 4988579 plays a significant role in the assembly and maintenance of components such as the condenser and evaporator. It is employed to fasten the refrigerant coils to their respective frames, ensuring that the coils remain in place and are not subjected to undue stress or movement. This is particularly important in maintaining the efficiency of heat exchange processes. Furthermore, it is used in securing the refrigerant lines and fittings, which are critical for the proper flow and distribution of refrigerant throughout the system. The secure fastening provided by this screw helps in preventing leaks and ensuring the system operates within its designed parameters.

Water Pump Drive

In water pump drive systems, the 4988579 is essential for the secure attachment of the water pump to its mounting bracket. This ensures that the pump remains stable and aligned with the drive mechanism, whether it is belt-driven or directly coupled. The screw is also used in fastening the impeller housing, which is crucial for the efficient operation of the pump. By providing a robust and reliable fastening solution, this screw contributes to the durability and performance of the water pump, ensuring that it can effectively circulate water through the engine cooling system.

Conclusion

The Cummins part number 4988579, a Hexagon Flange Head Cap Screw, is integral to the assembly and maintenance of various Cummins engines and truck systems. Its design ensures secure and reliable fastening, which is critical for the performance and longevity of these engines and systems. Regular maintenance and proper installation practices are essential to maximize the benefits of this part.