4298975
Lock Nut
Cummins®

The Cummins 4298975 Lock Nut is a specialized fastener designed for use in commercial trucks. Its purpose is to provide a secure fastening solution that resists loosening due to vibration and other dynamic forces commonly encountered in heavy-duty applications. This part is integral to maintaining the integrity of various truck components and systems, ensuring reliable operation and safety.

Basic Concepts of Lock Nuts

Lock nuts are a type of fastener that incorporates a mechanism to prevent loosening. They function by creating additional friction or deformation at the thread interface, which helps to keep the nut in place under dynamic conditions. There are several types of lock nuts, including prevailing torque lock nuts, nylon insert lock nuts, and deformed thread lock nuts, each suited to different applications based on the level of security and environmental conditions required ¹.

Role of the 4298975 Lock Nut in Truck Operation

The Cummins 4298975 Lock Nut plays a specific role in the operation and maintenance of commercial trucks by securing critical components and supporting various systems. It is often used in applications where vibrations and dynamic loads are significant, such as in the fastening of engine components, chassis parts, and other critical assemblies. By ensuring that these components remain securely fastened, the lock nut contributes to the overall reliability and safety of the truck ².

Key Features

The Cummins 4298975 Lock Nut is characterized by several key features that enhance its performance and reliability. It is typically made from high-strength materials to withstand the rigors of heavy-duty applications. The design may include features such as a deformed thread or nylon insert to provide the locking mechanism. Additionally, the lock nut is engineered to meet specific torque requirements, ensuring consistent performance across applications.

Benefits

Using the Cummins 4298975 Lock Nut offers several benefits. It provides improved security of fasteners, which is particularly important in applications where vibrations can cause standard nuts to loosen over time. The lock nut’s design also offers resistance to vibration, helping to maintain the integrity of fastening applications in harsh operating conditions. Furthermore, its durability contributes to the longevity of the components it secures, reducing the need for frequent maintenance and replacement.

Troubleshooting and Maintenance

Common issues with lock nuts may include over-tightening, which can lead to thread damage, or under-tightening, which may not provide sufficient security. Troubleshooting these problems involves checking the torque settings and ensuring that the lock nut is the correct type for the application. Regular maintenance practices, such as periodic inspection and re-torquing of fasteners, can help ensure the longevity and effectiveness of the 4298975 Lock Nut.

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 reputation for quality, reliability, and innovation in the commercial truck industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and durability of commercial vehicles.

Cummins Lock Nut 4298975 Compatibility

The Cummins Lock Nut 4298975 is a critical component used across a variety of Cummins engine models. This part is designed to secure and stabilize various engine parts, ensuring that they remain in place under operational conditions. Below is a detailed breakdown of the engine models that this lock nut fits with, grouped where applicable.

ISX Series

• ISX CM570
• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

QSX Series

• QSX11.9 CM2250 ECF
• QSX15 CM2250
• QSX15 CM2250 ECF

QST Series

• QST30 CM2350 T101

X Series

• X11 CM2670 X126B
• X12 CM2350 X119B
• X12 CM2670 X121B
• X12N CMMDG1 X143B
• X13 CM2670 X122B
• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

ISG Series

• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111

QSG Series

• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110

Other Models

• 15N CM2380 M104B

This lock nut is engineered to provide a reliable and secure fastening solution, ensuring that engine components remain properly aligned and secured during operation. It is essential for maintaining the integrity and performance of the engine.

Role of Part 4298975 Lock Nut in Engine Systems

Part 4298975 Lock Nut is integral to the secure arrangement of various components within engine systems, particularly in the context of turbochargers and exhaust systems.

In turbocharger applications, the Lock Nut ensures a steadfast connection between the turbocharger and the exhaust manifold. This secure fitting is essential for maintaining the performance and efficiency of the turbocharger. It prevents any unwanted movement or misalignment that could lead to decreased performance or potential damage.

At the exhaust outlet, the Lock Nut plays a significant role in maintaining the integrity of the exhaust system. It secures the connection points, ensuring that the exhaust flow is unimpeded and that there are no leaks. This is particularly important in high-performance engines where exhaust efficiency directly impacts overall engine performance.

Furthermore, within the manifold, the Lock Nut is used to secure various parts, ensuring that the manifold remains a sealed system. This is vital for maintaining the correct pressure and flow of exhaust gases, which is fundamental to the engine’s performance and efficiency.

Conclusion

In summary, the Cummins 4298975 Lock Nut is a key component in ensuring the secure and efficient operation of turbochargers and exhaust systems in engine arrangements. Its role in maintaining secure connections and preventing leaks is fundamental to the overall performance and longevity of these systems.