140626
Round Head Cap Screw
Cummins®

The Round Head Cap Screw Part #140626, manufactured by Cummins, is a specialized fastener designed for use in commercial truck applications. Cummins, a well-established name in the automotive industry, is known for its high-quality components that enhance the performance and reliability of commercial vehicles. This Cummins part is integral to the secure assembly of various truck components, ensuring that parts remain firmly in place under demanding operational conditions.

Basic Concepts of Round Head Cap Screws

Round head cap screws are a type of fastener characterized by a rounded head and a threaded body. They are commonly used in mechanical assemblies to secure components together. The rounded head provides a larger surface area for distributing the clamping force, reducing the risk of damage to the fastened material. Additionally, the head design allows for easy installation and removal using standard tools, making round head cap screws a versatile choice for various applications ¹.

Purpose of the 140626 Round Head Cap Screw in Truck Operations

This part plays a significant role in the operation and maintenance of commercial trucks. It is utilized in various truck systems, including the engine, transmission, and chassis. By securely fastening components, it ensures that parts remain in place during operation, contributing to the overall stability and performance of the vehicle. Its applications range from attaching engine components to securing parts of the truck’s frame and body ².

Key Features of the 140626 Round Head Cap Screw

The 140626 Round Head Cap Screw is distinguished by several key features that make it suitable for heavy-duty applications. It is typically made from high-strength materials, such as alloy steel, to withstand the rigors of commercial truck use. The screw features a coarse thread, which provides a strong grip and resists loosening under vibration. Its round head is designed to distribute clamping force evenly, minimizing the risk of damage to the fastened components ³.

Benefits of Using the 140626 Round Head Cap Screw

Employing this Cummins part in truck maintenance and assembly offers several advantages. Its durable material composition ensures long-lasting performance, even under harsh conditions. The screw’s resistance to vibration helps maintain secure fastenings, reducing the need for frequent re-tightening. Additionally, the design of the screw allows for easy installation, saving time during maintenance procedures ⁴.

Installation and Usage Guidelines

Proper installation of the 140626 Round Head Cap Screw is vital to ensure optimal performance and longevity. Begin by selecting the appropriate size screw for the application. Use a torque wrench to tighten the screw to the manufacturer’s specified torque setting, avoiding over-tightening, which can damage the screw or the fastened components. Ensure that the screw is installed perpendicular to the surface to achieve the best clamping force.

Troubleshooting Common Issues

Frequent problems associated with round head cap screws in truck applications include loosening due to vibration and corrosion. To address these issues, regularly inspect screws for signs of loosening or corrosion. If a screw is found to be loose, re-tighten it to the specified torque setting. In cases of corrosion, consider replacing the screw to prevent further degradation. Applying a thread locker can also help prevent screws from loosening due to vibration.

Maintenance Tips

Regular inspection and maintenance of the 140626 Round Head Cap Screw are recommended to prevent failures and extend service life. Inspect screws during routine maintenance checks for signs of wear, corrosion, or loosening. Clean screws and surrounding areas to remove dirt and debris that can contribute to corrosion. Replace screws that show significant wear or damage to maintain the integrity of the fastened components.

Cummins: A Brief 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, innovation, and reliability in the commercial vehicle industry. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial applications. Cummins’ commitment to quality is evident in its rigorous testing and quality control processes, ensuring that its products deliver reliable performance in the field.

Cummins Round Head Cap Screw 140626 Compatibility with Various Engines

The Cummins Round Head Cap Screw, part number 140626, is a versatile component designed to fit a variety of engine models. This screw is integral in securing various parts within the engine assembly, ensuring stability and reliability during operation. Below is a detailed overview of how this part integrates with different Cummins engines.

K Series Engines

• K19
• K38
• K50

The K series engines, including the K19, K38, and K50, utilize the 140626 Round Head Cap Screw in several critical applications. These engines are known for their robust construction and are often used in heavy-duty applications. The screw is typically employed in securing components such as valve covers, intake manifolds, and other critical assemblies that require a reliable fastening solution.

L Series Engines

• L10 MECHANICAL

The L10 MECHANICAL engine incorporates the 140626 Round Head Cap Screw in various fastening applications. This engine is designed for durability and efficiency, often used in industrial and agricultural settings. The screw helps in maintaining the structural integrity of the engine by securing components such as the cylinder head, oil pan, and other essential parts.

N Series Engines

• N14 MECHANICAL

The N14 MECHANICAL engine is another model that benefits from the use of the 140626 Round Head Cap Screw. This engine is widely recognized for its power and reliability, making it a popular choice in various applications. The screw is used to fasten components such as the cylinder head, exhaust manifold, and other critical parts, ensuring that the engine operates smoothly and efficiently.

NH/NT Series Engines

• NH/NT 855

The NH/NT 855 engine also utilizes the 140626 Round Head Cap Screw in its assembly. This engine is known for its versatility and is used in a range of applications, from construction to agricultural machinery. The screw is employed in securing various components, including the engine block, intake manifold, and other parts that require a strong and reliable fastening solution.

V Series Engines

• V28
• V903

The V28 and V903 engines are high-performance models that incorporate the 140626 Round Head Cap Screw in their design. These engines are built for power and efficiency, often used in demanding applications. The screw is used to fasten components such as the cylinder head, fuel injection system, and other critical parts, ensuring that the engine maintains its structural integrity and operates at peak performance.

Role of Part 140626 Round Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the Part 140626 Round Head Cap Screw plays a significant role in ensuring the secure fastening of various components. This screw is integral in the AFC-VS Fuel Pump/TMD assembly, where it helps maintain the structural integrity of the fuel pump and its associated components.

When considering the FP & Gov Sump, the Round Head Cap Screw is utilized to fasten the sump to the engine block, ensuring a leak-proof seal and stable operation of the fuel governance system. Similarly, in the Fuel Base Pump and Fuel Gear Pump configurations, this screw is essential for securing the pump housing, which is vital for the consistent delivery of fuel.

In the broader context of the Fuel Pump & Cal Code and Fuel Pump & Cal., the screw ensures that calibration components are firmly attached, allowing for precise fuel measurement and delivery. For the Fuel Pump and Drive system, it secures the drive mechanism to the pump, ensuring efficient operation.

The Fuel Pump Hardware and Fuel Pump Mounting also benefit from the use of this screw, as it provides the necessary tension to keep the pump securely in place. In the Fuel Pump Sub-Option and Fuel Pump, Gov. and Drive assemblies, the screw ensures that all moving parts are correctly aligned and fastened.

Furthermore, in the Fuel VS & TC and Fuel VS Pump systems, the Round Head Cap Screw is used to secure various pump components, ensuring they function as a cohesive unit. For the Fuel WW Pump and Fuel & WW Gov, this screw plays a role in maintaining the structural integrity of the governance system, which is essential for regulating fuel flow.

In non-AFC VS FP/Gov. Sump and non-AFC VS FP/WW Sump configurations, the screw is used to secure the sump and associated components, ensuring they remain in place under operational conditions.

Overall, the Part 140626 Round Head Cap Screw is a fundamental component in the secure assembly and operation of various fuel pump and governance systems within engine configurations.

Conclusion

The 140626 Round Head Cap Screw is a critical component in the assembly and maintenance of commercial trucks and engines. Its robust design, resistance to vibration, and ease of installation make it an ideal choice for heavy-duty applications. Regular maintenance and proper installation are essential to ensure the longevity and reliability of this Cummins part in various engine systems.