4967493
Square Key
Cummins®

The Cummins 4967493 Square Key is a specialized component designed for use in heavy-duty truck applications. Its purpose is to secure and align rotating components within the engine system, ensuring efficient torque transmission and reliable operation. The significance of this part lies in its ability to enhance the performance and durability of heavy-duty trucks, contributing to their overall effectiveness in demanding environments.

Basic Concepts of Square Keys

Square keys are mechanical fasteners used to connect rotating machine elements to stationary ones, preventing relative motion between the components. They function by fitting into matching keyways in both the shaft and the hub, creating a secure connection that allows for the transmission of torque. In the automotive industry, square keys are commonly used in applications where precise alignment and robust torque transmission are required, such as in engine components, transmissions, and drivetrains ¹.

Purpose of the Cummins 4967493 Square Key

The Cummins 4967493 Square Key plays a specific role in the operation of heavy-duty trucks by securing components and transmitting torque between the shaft and the hub. This ensures that the rotating parts remain aligned and function as intended under various load conditions. By providing a stable connection, the square key contributes to the efficient and reliable performance of the engine system ².

Key Features

The Cummins 4967493 Square Key is characterized by several distinctive features that enhance its performance and durability. These include its material composition, typically made from high-strength steel to withstand the rigors of heavy-duty applications, precise dimensions that ensure a proper fit within the keyways, and a design that maximizes torque transmission while minimizing the risk of shearing or failure ³.

Benefits of Using Cummins 4967493 Square Key

The Cummins 4967493 Square Key offers several advantages for heavy-duty truck applications. These include improved reliability due to its robust construction, enhanced torque transmission capabilities that ensure efficient power delivery, and compatibility with Cummins engines and components, which simplifies maintenance and replacement processes. Additionally, the use of this square key can contribute to the longevity and performance of the truck’s engine system.

Installation and Usage Guidelines

Proper installation of the Cummins 4967493 Square Key is crucial for ensuring its effectiveness and longevity. The process involves aligning the key with the keyways in both the shaft and the hub, inserting it until it is fully seated, and then securing the components in place. Recommended tools for this task include a hammer for gentle tapping and a torque wrench for tightening fasteners to the specified torque settings. Safety precautions, such as wearing protective gloves and eyewear, should be observed during installation to prevent injuries.

Troubleshooting and Maintenance

Common issues that may arise with square keys include misalignment, wear, and damage due to excessive torque or improper installation. Diagnostic tips for identifying problems include checking for unusual noises, vibrations, or a decrease in performance, which may indicate a faulty square key. Maintenance practices to ensure optimal performance and longevity include regular inspection for signs of wear or damage, proper lubrication of keyways to reduce friction, and timely replacement of the square key if necessary.

Manufacturer Information - Cummins

Cummins Inc. is a renowned manufacturer in the automotive industry, with a long-standing reputation for producing high-quality components for heavy-duty trucks. Founded in 1919, Cummins has a history of innovation and excellence, consistently delivering reliable and durable products that meet the demanding requirements of commercial and industrial applications. The company’s commitment to quality and performance is evident in its wide range of engine and component offerings, designed to enhance the efficiency and reliability of heavy-duty vehicles.

Square Key 4967493 in Cummins Engines

The Square Key 4967493, manufactured by Cummins, is a critical component in various Cummins engine models. This part is essential for ensuring the proper alignment and secure fastening of certain engine components, contributing to the overall reliability and performance of the engine.

KTA19 Series

In the KTA19 series, the Square Key 4967493 is utilized to maintain the alignment between the crankshaft and the connecting rod bearings. This key ensures that the rotational forces are transmitted efficiently, reducing the risk of mechanical failure and enhancing the engine’s longevity.

KTA38 Series

Similarly, in the KTA38 series, the Square Key 4967493 plays a pivotal role in securing the alignment of the main bearings. This alignment is crucial for the smooth operation of the engine, as any misalignment can lead to increased wear and potential damage to the engine components.

KTA50 Series

In the KTA50 series, the Square Key 4967493 is employed to ensure the proper alignment of the camshaft and the crankshaft. This alignment is vital for the synchronization of the engine’s valve timing, which directly impacts the engine’s performance and efficiency.

K19 Series

For the K19 series, the Square Key 4967493 is used to maintain the alignment of the turbocharger and the engine’s intake manifold. This alignment is essential for the efficient operation of the turbocharger, ensuring that the engine receives the optimal amount of air for combustion.

K38 Series

In the K38 series, the Square Key 4967493 is utilized to secure the alignment of the engine’s piston rods. This alignment is critical for the smooth operation of the pistons, as any misalignment can lead to increased friction and potential engine damage.

By ensuring the proper alignment and secure fastening of these components, the Square Key 4967493 contributes significantly to the overall performance, reliability, and longevity of Cummins engines.

Role of Part 4967493 Square Key in Engine Systems

The part 4967493 Square Key is integral to the efficient operation of several engine components. In the accessory w-w governor drive, this square key ensures a secure connection between the drive shaft and the accessory, allowing for the transfer of rotational force without slippage. This is essential for the consistent operation of accessories that rely on precise rotational speed and torque.

In the coupling, the square key plays a significant role by maintaining alignment and transmitting power between two shafts. Its design prevents any lateral movement, which is vital for the smooth operation of the coupling and the connected components.

When it comes to the fuel pump, the square key is used to connect the pump to the drive mechanism. This connection must be robust to handle the continuous operation and varying loads that the fuel pump experiences. The square key ensures that the pump operates at the correct speed and with the necessary torque to deliver fuel efficiently.

Lastly, in the Woodward governor, the square key is employed to link the governor to the engine’s control mechanism. This connection is fundamental for the governor to regulate the engine’s speed accurately. The square key’s precise fit and strong connection are essential for the governor to respond quickly and effectively to changes in load and speed, ensuring stable engine performance.

Conclusion

The Cummins 4967493 Square Key is a vital component in heavy-duty truck engines, ensuring the secure alignment and efficient torque transmission of various engine components. Its robust construction, precise dimensions, and compatibility with Cummins engines make it an essential part for maintaining the performance and reliability of heavy-duty vehicles. Proper installation, regular maintenance, and timely replacement are key to maximizing the benefits of this Cummins part.