4985492
Lock Nut
Cummins®

The Cummins 4985492 Lock Nut is a specialized fastener designed for use in commercial trucks. Its primary purpose is to secure various components within the truck’s engine and drivetrain systems, ensuring stability and reliability under demanding operational conditions. This part is integral to maintaining the integrity of critical connections, thereby contributing to the overall performance and safety of the vehicle.

Basic Concepts of Lock Nuts

Lock nuts are a type of fastener that prevents loosening due to vibration or rotation. They function by creating a frictional force between the nut and the threaded component, which resists movement. There are several types of lock nuts, including those with nylon inserts, deformed threads, and prevailing torque features. Each type is suited to different applications based on the level of security required and the environmental conditions they will face. In various industries, lock nuts are used to secure machinery, equipment, and structural components, ensuring that connections remain tight and reliable over time ¹.

Role of the 4985492 Lock Nut in Truck Operation

The Cummins 4985492 Lock Nut plays a specific role in the operation and maintenance of commercial trucks by securing critical components within the engine and drivetrain systems. It is often used to fasten parts that are subject to high levels of vibration and stress, such as engine mounts, exhaust system components, and certain drivetrain connections. By providing a secure and stable connection, this lock nut helps to maintain the alignment and functionality of these parts, which is vital for the truck’s performance and longevity.

Key Features

The Cummins 4985492 Lock Nut is designed with several key features that enhance its performance and reliability. It is constructed from high-strength materials to withstand the rigors of commercial truck operation. The thread type is precision-machined to ensure a tight and secure fit on the corresponding bolts or studs. Additionally, the lock nut may feature special coatings or treatments to improve corrosion resistance and durability, making it suitable for use in harsh operating environments.

Benefits

Using the Cummins 4985492 Lock Nut offers several benefits. It provides improved security for fasteners, reducing the risk of loosening due to vibration. This enhanced security is particularly important in commercial trucks, where even minor fastener failure can lead to significant issues. The lock nut’s resistance to vibration loosening ensures that connections remain tight and reliable, even under demanding conditions. Furthermore, its durability in harsh operating conditions contributes to the overall reliability and longevity of the truck’s components ².

Troubleshooting and Maintenance

Common issues with lock nuts may include loosening over time, corrosion, or damage from over-tightening. To troubleshoot these issues, it is important to inspect the lock nuts regularly for signs of wear or damage. Re-torquing fasteners to the manufacturer’s specifications can help maintain the integrity of the connection. In cases where a lock nut is damaged or shows significant wear, replacement is recommended to ensure continued reliability and safety. Proper maintenance practices, including regular inspection and timely replacement, are crucial for the longevity and proper function of lock nuts in commercial trucks.

About Cummins

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 strong reputation for quality and innovation in the commercial vehicle industry. The company’s product range includes engines, powertrains, and related components, all designed to meet the demanding requirements of commercial and industrial applications. Cummins’ commitment to quality is evident in its rigorous manufacturing processes and extensive testing protocols, ensuring that its products deliver reliable performance and durability in a variety of operating conditions.

Lock Nut 4985492 Compatibility with Cummins Engines

The Lock Nut part number 4985492, manufactured by Cummins, is designed to fit seamlessly with several of their engine models. This part is essential for securing components within the engine, ensuring that they remain firmly in place during operation. Here are the Cummins engines that are compatible with this lock nut:

ISX CM871

The ISX CM871 engine is a robust and reliable option for heavy-duty applications. The Lock Nut 4985492 is integral to maintaining the integrity of various engine components, providing the necessary security and stability.

QSX15 CM2250 and QSX15 CM2350 X105

Both the QSX15 CM2250 and QSX15 CM2350 X105 engines benefit from the use of the Lock Nut 4985492. These engines are known for their power and efficiency, and the lock nut plays a crucial role in ensuring that all parts remain tightly secured. The X105 variant, in particular, benefits from this part’s precision and durability, which are critical for maintaining performance under demanding conditions.

By using the Lock Nut 4985492, technicians and operators can be confident that their engines will maintain the necessary stability and security, contributing to overall engine longevity and reliability.

Role of Part 4985492 Lock Nut in Engine Systems

In the context of engine systems, the part 4985492 Lock Nut is an essential component that ensures the secure fastening of various assemblies. Its application spans across multiple engine components, contributing to the overall integrity and performance of the engine.

EGR Cooler Kit

Within the EGR (Exhaust Gas Recirculation) Cooler Kit, the Lock Nut is utilized to secure the connections between the cooler and the associated piping. This ensures that the recirculated exhaust gases are effectively cooled before being reintroduced into the intake stream, which helps in reducing nitrogen oxides (NOx) emissions and improving engine efficiency.

Exhaust Recirculation Cooler Kit

Similarly, in the Exhaust Recirculation Cooler Kit, the Lock Nut plays a role in maintaining the tightness of the connections. This is vital for preventing leaks in the system, which could lead to a decrease in the effectiveness of the recirculation process and potentially higher emissions.

Parts Distribution Center Kit

In the Parts Distribution Center Kit, the Lock Nut is employed to secure various components within the distribution system. This ensures that parts are correctly aligned and fastened, which is important for the efficient operation of the distribution center and the timely delivery of parts to their designated locations within the engine system.

Turbocharger

The Turbocharger also benefits from the use of the Lock Nut. It is used to secure the turbocharger to the engine block or manifold, ensuring that it remains firmly in place under the high-stress conditions of operation. This is important for maintaining the turbocharger’s efficiency and longevity, as any movement or misalignment could lead to decreased performance or damage.

In each of these applications, the Lock Nut’s role is to provide a secure and reliable fastening solution, which is fundamental to the proper functioning and durability of the engine systems.

Conclusion

The Cummins 4985492 Lock Nut is a critical component in the maintenance and operation of commercial trucks and their engines. Its design and features ensure secure fastening of various engine components, contributing to the overall performance, reliability, and longevity of the vehicle. Regular maintenance and proper use of this part are essential for ensuring the continued efficiency and safety of commercial truck operations.