3633479
Lock Nut
Cummins®

The Cummins 3633479 Lock Nut is a specialized component designed for use in commercial trucks. Its purpose is to provide secure fastening of various components, ensuring stability and safety during truck operation. In the context of commercial truck maintenance and operation, this Cummins part plays a significant role by helping to maintain the integrity of critical assemblies under the demanding conditions encountered in heavy-duty applications ¹.

Basic Concepts of Lock Nuts

Lock nuts are mechanical fasteners designed to prevent loosening of bolts and nuts under vibration and operational stress. They function by creating additional friction or deformation that resists the rotational forces that could otherwise cause a standard nut to loosen. This is particularly important in applications where components are subject to continuous movement and vibration, such as in commercial trucks. The use of lock nuts ensures that fasteners remain securely in place, thereby maintaining the structural integrity and safety of the vehicle ².

Purpose of the Cummins 3633479 Lock Nut

The Cummins 3633479 Lock Nut is specifically engineered to play a role in the secure fastening of components within a truck’s mechanical system. By providing a reliable means to prevent loosening, it contributes to the overall stability and safety of the truck during operation. This lock nut is often used in applications where vibrations and dynamic loads are common, ensuring that critical components remain firmly attached.

Key Features

The Cummins 3633479 Lock Nut is characterized by several key features that enhance its performance and reliability. Its design incorporates a nylon insert that deforms under torque, creating a locking mechanism that resists loosening. The material composition typically includes high-strength steel, which provides durability and resistance to wear. Additionally, the lock nut may feature a unique thread profile or other attributes that improve its locking capability and compatibility with various fasteners.

Benefits

Using the Cummins 3633479 Lock Nut offers several benefits. It provides improved fastening security, ensuring that components remain securely attached under vibration and operational stress. Its durability under harsh conditions contributes to the longevity of truck components, reducing the need for frequent maintenance and replacement. Furthermore, the reliable performance of this lock nut supports the overall efficiency and safety of truck operations.

Installation Guidelines

Proper installation of the Cummins 3633479 Lock Nut is vital for ensuring optimal performance and safety. The installation process should follow specific torque specifications provided by the manufacturer to achieve the correct level of tightness without over-torquing, which could damage the lock mechanism. Best practices include using the appropriate tools and ensuring that the mating surfaces are clean and free of debris to facilitate a secure fit.

Troubleshooting and Maintenance

Common issues with lock nuts, such as loosening or damage, can often be addressed through proper troubleshooting and maintenance practices. Regular inspections should be conducted to check for signs of wear or loosening. If a lock nut is found to be loose, it should be re-torqued to the manufacturer’s specifications. In cases of significant damage, replacement may be necessary to ensure continued reliable performance. Maintenance tips include keeping the lock nut and its mating surfaces clean and free of contaminants that could affect its locking capability.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established itself as a leader in the automotive industry through its commitment to innovation, quality, and customer satisfaction. The company’s expertise in diesel engine manufacturing and its dedication to advancing technology have made it a trusted name in the commercial truck and heavy-duty equipment sectors ³.

Lock Nut 3633479 Compatibility with Cummins Engines

The Lock Nut part number 3633479, manufactured by Cummins, is a critical component in securing various engine parts. This part is designed to fit seamlessly with several Cummins engine models, ensuring stability and reliability in engine operations. Here is a detailed look at its compatibility across different engine series:

GTA38 G CMEICS G116C Series

The Lock Nut 3633479 is compatible with the GTA38 G CMEICS G116C engines. This series is known for its robust design and high performance, making it suitable for demanding applications. The lock nut ensures that the engine components remain securely fastened, preventing any unwanted movement that could lead to mechanical failures.

K38, K50, KTA38GC CM558, QSK38 CM2150 MCRS, QSK38 CM850 MCRS

The Lock Nut 3633479 is also compatible with the K38, K50, and KTA38GC CM558 engines. These engines are part of the QSK series, which is renowned for its efficiency and reliability. The lock nut plays a crucial role in maintaining the integrity of the engine’s internal components, ensuring smooth and consistent performance.

Additionally, the Lock Nut 3633479 fits the QSK38 CM2150 MCRS and QSK38 CM850 MCRS engines. These models are designed for heavy-duty applications, and the lock nut’s secure fastening capability is essential for maintaining the engine’s structural integrity under high stress conditions.

QSK50 CM2150 MCRS, QSK50 CM2350 K108

Lastly, the Lock Nut 3633479 is compatible with the QSK50 CM2150 MCRS and QSK50 CM2350 K108 engines. These engines are part of the QSK50 series, which is engineered for superior performance and durability. The lock nut ensures that all engine components are held firmly in place, contributing to the overall reliability and longevity of the engine.

Role of Part 3633479 Lock Nut in Engine Systems

Part 3633479 Lock Nut is integral to the secure assembly and operation of various engine components. In the Short Block Assembly - K50, it ensures that the components remain tightly fastened, preventing any unwanted movement that could lead to engine failure.

When integrated into the Base Part of the Cylinder Block, the Lock Nut plays a significant role in maintaining the structural integrity of the engine. It secures the Base Parts to the Cylinder Block Lifting Fixture, ensuring that during maintenance or repair, the cylinder block can be safely lifted without any risk of component detachment.

In the Engine Oil Cooler and Lubricating Oil Cooler systems, the Lock Nut is used to secure the cooler to the engine, ensuring a stable and leak-free connection. This is vital for the efficient cooling of engine oil, which in turn helps in maintaining optimal engine temperature and performance.

For the Long Block Assembly - 50, the Lock Nut is employed to secure various components, ensuring that the assembly remains intact during operation. It is also used in the Short Block Assembly - 50 and Short Block Assembly - K38 to fasten parts securely, contributing to the overall stability and reliability of the engine.

Conclusion

In summary, Part 3633479 Lock Nut is a fundamental component in ensuring that engine assemblies are securely fastened, contributing to the safe and efficient operation of the engine. Its compatibility with various Cummins engine models underscores its versatility and importance in maintaining the structural integrity and performance of these engines.