4000847
Lock Nut
Cummins®

The 4000847 Locking Nut, manufactured by Cummins, is a specialized component designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the automotive industry, produces a range of high-quality parts that contribute to the efficiency and reliability of commercial vehicles. This Cummins part plays a significant role in ensuring the secure fastening of various truck components.

Basic Concepts of Locking Nuts

Locking nuts are mechanical fasteners designed to resist loosening under vibration and dynamic loads. They function by creating a locking mechanism that prevents the nut from unscrewing once it has been tightened. This is typically achieved through the use of nylon inserts, deformed threads, or locking tabs. Locking nuts are widely used in various mechanical systems where the integrity of the fastened components is crucial ¹.

Purpose of the 4000847 Locking Nut

The 4000847 Locking Nut is specifically designed to secure components and assemblies in commercial trucks. It plays a role in maintaining the structural integrity of the truck by ensuring that critical parts remain firmly in place, even under demanding operating conditions. This nut is often used in applications where vibration and dynamic loads are common, such as in the fastening of engine components, chassis parts, and other critical assemblies ².

Key Features

The 4000847 Locking Nut features several design elements that enhance its performance and reliability. It is constructed from high-strength materials, ensuring durability and resistance to wear. The nut incorporates a locking mechanism, such as a nylon insert or deformed threads, which provides additional security against loosening. Its design also includes precise threading to ensure a proper fit and easy installation.

Benefits

Using the 4000847 Locking Nut offers several advantages. The primary benefit is the improved security of fastened components, which helps prevent loosening due to vibration or dynamic loads. This nut also provides resistance to corrosion, extending its service life in harsh operating conditions. Additionally, its robust construction contributes to the overall longevity and reliability of the truck’s components.

Installation Guidelines

Proper installation of the 4000847 Locking Nut is vital for optimal performance and safety. To install, first, ensure that the mating threads are clean and free of debris. Place the nut onto the bolt or stud and tighten it to the specified torque using a torque wrench. It is important to follow the manufacturer’s torque specifications to avoid over-tightening, which can damage the threads, or under-tightening, which can compromise the security of the fastener.

Troubleshooting and Maintenance

Common issues with locking nuts include loosening due to inadequate torque, corrosion, or damage to the locking mechanism. To identify problems, regularly inspect the nuts for signs of wear, corrosion, or movement. Maintenance practices such as periodic re-torqueing and cleaning can help prolong the service life of the 4000847 Locking Nut. If corrosion is detected, consider using a corrosion-resistant coating or replacing the nut to ensure continued reliability.

Compatibility and Applications

The 4000847 Locking Nut is typically used in various applications within commercial truck systems. It is compatible with a range of components and assemblies, including engine parts, chassis components, and other critical fastening points. When selecting a locking nut for a specific application, it is important to consider the material compatibility, thread size, and environmental conditions to ensure optimal performance.

Safety Considerations

The use of locking nuts in commercial truck applications has significant safety implications. Correct installation and regular inspection of these nuts are important to prevent failures that could lead to component loosening or detachment. Adhering to torque specifications and maintenance schedules helps ensure the continued reliability and safety of the truck’s components.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial vehicle industry, known for its high-quality engines, powertrains, and components. Founded in 1919, Cummins has a long history of innovation and commitment to quality. The company offers a wide range of products designed to enhance the performance, efficiency, and reliability of commercial vehicles. Cummins’ reputation for excellence is built on its dedication to producing durable, high-performing components that meet the demanding needs of the industry ³.

Locking Nut 4000847 Compatibility with Cummins Engines

The Locking Nut 4000847, manufactured by Cummins, is a critical component that ensures secure fastening in various engine configurations. This part is designed to fit seamlessly within the engine systems, providing stability and reliability. Here’s how it integrates with specific Cummins engines:

QSK19 CM850 MCRS and QSK60 CM850 MCRS

The Locking Nut 4000847 is compatible with the QSK19 CM850 MCRS and QSK60 CM850 MCRS engines. These engines are part of the Cummins QSK series, known for their robust performance and durability. The locking nut is engineered to fit the specific threading and fastening requirements of these models, ensuring that components remain securely in place under operational stresses.

QSK45 CM500 and QSK60 CM500

Similarly, the Locking Nut 4000847 is also suitable for the QSK45 CM500 and QSK60 CM500 engines. These engines are part of the Cummins QSK series, which is designed for high-performance applications. The nut’s design aligns with the threading specifications of these engines, providing a reliable locking mechanism that prevents loosening over time.

QSK60G

The Locking Nut 4000847 is also compatible with the QSK60G engine. This engine is part of the Cummins QSK series, which is known for its versatility and efficiency. The nut fits the specific requirements of the QSK60G, ensuring that it can withstand the operational demands of this engine model.

Each of these engines benefits from the use of the Locking Nut 4000847, which provides a secure fastening solution that enhances the overall reliability and performance of the engine systems.

Role of Part 4000847 Locking Nut in Engine Systems

The part 4000847 Locking Nut is integral to the secure assembly and operation of various engine components. In the context of fuel plumbing, this locking nut ensures that connections remain tight and leak-free, which is essential for maintaining fuel system integrity and performance. It is often used in conjunction with reducing adapters to transition between different pipe sizes while ensuring a secure fit.

Within the injector systems, the locking nut plays a significant role by securing injector lines to the fuel rail. This prevents any potential fuel leaks and ensures consistent fuel delivery to the engine cylinders, which is vital for optimal engine performance.

For specialized applications such as the Q45 S.O I Fixture Kit and Q60 S.O I Fixture Kit, the locking nut is employed to secure various plumbing connections. These kits often involve intricate fuel and plumbing designs where secure fittings are paramount to avoid any disruptions in fuel flow or pressure.

In the broader scope of engine parts, the locking nut is a fundamental component that contributes to the overall reliability and efficiency of the engine. By ensuring that all connections are firmly in place, it helps maintain the designed performance levels of the engine.

Additionally, in instrument and plumbing systems, the locking nut is used to secure gauges and sensors to their respective mounts. This ensures that these instruments provide accurate readings and are not compromised by loose connections.

Overall, the part 4000847 Locking Nut is a versatile component that enhances the security and functionality of various engine and plumbing systems, contributing to the smooth operation and longevity of the engine.

Conclusion

The 4000847 Locking Nut is a critical component in the maintenance and operation of commercial trucks, particularly in ensuring the secure fastening of various engine and chassis components. Its design, featuring high-strength materials and a reliable locking mechanism, provides enhanced security against loosening due to vibration and dynamic loads. Proper installation and regular maintenance are essential to maximize its benefits and ensure the continued reliability and safety of the truck’s components. The compatibility of this part with various Cummins engines further underscores its importance in the automotive industry.