139950
Lockplate
Cummins®

The Cummins 139950 Lockplate is a component designed for use in heavy-duty truck maintenance and operation. It serves a specific function in securing fasteners, ensuring they remain in place under dynamic conditions such as vibration and varying loads. Understanding its purpose and significance is fundamental for maintaining the integrity and safety of heavy-duty trucks.

Basic Concepts of Lockplates

A lockplate, also known as a lock washer, is a thin plate used to prevent fastened components from loosening. It operates by applying additional pressure to the fastener, thereby increasing friction and resistance to movement. This is particularly important in mechanical systems where vibrations and dynamic forces are common ¹.

Purpose of the Cummins 139950 Lockplate

This Cummins part is specifically designed to secure fasteners in heavy-duty truck applications. Its role is to prevent loosening due to vibration or other dynamic forces that are inherent in truck operation. By maintaining the integrity of the fastened components, it contributes to the overall safety and reliability of the vehicle.

Key Features

The Cummins 139950 Lockplate is characterized by several primary features. It is typically made from high-strength materials to ensure durability under demanding conditions. Its design includes elements that enhance its functionality, such as serrated edges that dig into the fastener and the surface it contacts, providing additional resistance to movement. These features differentiate it from standard lockplates, offering enhanced performance in heavy-duty applications.

Benefits

Using this part offers several advantages. It contributes to improved safety by ensuring that critical fasteners remain secure. Its enhanced durability reduces the frequency of maintenance required, potentially leading to cost savings. Additionally, by preventing fastener loosening, it helps maintain the optimal performance of the truck’s components.

Installation Process

Installing the Cummins 139950 Lockplate requires attention to detail to ensure effectiveness. The process involves placing the lockplate under the nut or bolt head before tightening. It is important to ensure that the serrated edges are properly aligned to maximize their locking effect. Following manufacturer guidelines for torque specifications is also crucial to avoid over-tightening, which could damage the fastener or the lockplate.

Troubleshooting and Maintenance

Regular inspection of the Cummins 139950 Lockplate is recommended to identify any signs of wear or damage. Common issues may include deformation of the serrated edges or corrosion, which can reduce its effectiveness. Maintenance tips include cleaning the lockplate and its contact surfaces to remove any debris that could interfere with its function. Replacing worn or damaged lockplates promptly is also advised to maintain the security of the fasteners.

Compatibility and Applications

The Cummins 139950 Lockplate is designed for use in specific heavy-duty truck models. Its application is guided by compatibility with certain fastener sizes and types, ensuring it meets the demands of the intended use. It is commonly found in trucks where reliability and durability are paramount, adhering to industry standards for quality and performance.

Cummins: A Brief Overview

Cummins Inc. is a well-established manufacturer in the automotive and heavy-duty truck industry, known for its wide range of products including engines, filtration systems, and components like the 139950 Lockplate. The company’s reputation for quality and reliability underscores the trust placed in its products by professionals in the field.

Lockplate 139950 Compatibility with Cummins Engines

The Lockplate part number 139950, manufactured by Cummins, is designed to fit seamlessly with a range of Cummins engines. This part is crucial for securing various components within the engine assembly, ensuring stability and reliability during operation.

V903 and VTA903 Engines

The Lockplate 139950 is compatible with the V903 and VTA903 engines. These engines are known for their robust design and are often used in heavy-duty applications. The lockplate ensures that the components remain securely fastened, preventing any unwanted movement that could lead to mechanical failure.

CM2250 and V105 Engines

Similarly, the Lockplate 139950 is also suitable for the CM2250 and V105 engines. These engines are part of Cummins’ lineup of high-performance diesel engines, frequently utilized in various industrial and commercial settings. The lockplate’s role in these engines is to maintain the integrity of the engine’s internal components, contributing to the overall efficiency and longevity of the engine.

By ensuring a secure fit with these engines, the Lockplate 139950 plays a vital role in the performance and durability of Cummins’ engine lineup.

Role of Part 139950 Lockplate in Engine Systems

The part 139950 Lockplate is an essential component in maintaining the integrity and performance of various engine systems. It is specifically designed to secure and align critical parts within the engine, ensuring smooth operation and preventing potential mechanical failures.

Integration with Camshaft and Cylinder Head

In the context of the camshaft and cylinder head, the Lockplate plays a significant role in securing the camshaft in place. This ensures that the camshaft maintains proper alignment with the cylinder head, which is vital for the accurate timing of valve operations. Without the Lockplate, the camshaft could shift, leading to misaligned valve timing and compromised engine performance.

Function in the Cylinder Block and Short Block Engine Kit

When incorporated into the cylinder block or a short block engine kit, the Lockplate helps in maintaining the structural integrity of the engine. It ensures that all components, such as the piston and connecting rod assembly, are held in their correct positions. This is particularly important in a short block kit where the engine is being rebuilt or overhauled, as precise alignment is necessary for optimal performance and durability.

Role in the Piston / Connection Rod Assembly

In the piston / connection rod assembly, the Lockplate is used to secure the connecting rod to the piston. This is essential for maintaining the proper connection between the piston and the crankshaft, ensuring that the reciprocating motion of the piston is effectively translated into rotational motion. The Lockplate prevents any unwanted movement or misalignment, which could lead to increased wear and potential engine damage.

Importance in the Engine Gasket Set and Overhaul Gasket Set

The Lockplate also plays a role in the engine gasket set and overhaul gasket set by ensuring that all components are properly aligned during the installation process. This is important for maintaining the integrity of the gaskets and seals, which are crucial for preventing leaks and ensuring proper engine function. Proper alignment facilitated by the Lockplate helps in achieving a tight and secure fit, which is essential for the longevity and performance of the engine.

Application in Performance Parts and Injectors

In performance parts and injectors, the Lockplate is used to secure high-performance components that require precise alignment and secure fitting. This ensures that these components function at their peak performance levels, contributing to the overall efficiency and power output of the engine. The Lockplate’s role in these applications underscores its importance in enhancing engine performance and reliability.

Summary of Component Interactions

Overall, the part 139950 Lockplate is a versatile component that interacts with various engine systems to ensure proper alignment, secure fitting, and optimal performance. Its application across different engine components highlights its significance in maintaining the structural integrity and functional efficiency of the engine.

Conclusion

The Cummins 139950 Lockplate is a critical component in the maintenance and operation of heavy-duty trucks and engines. Its design and features ensure that fasteners remain secure under dynamic conditions, contributing to the safety, reliability, and performance of the vehicle. Regular maintenance and proper installation are key to maximizing the benefits of this part.