3049670
Captive Washer Cap Screw
Cummins®

Introduction

The Captive Washer Cap Screw Part #3049670, produced by Cummins, is a specialized fastener designed for various applications within commercial trucks. This screw contributes to the structural integrity and performance of these vehicles.

Basic Concepts of Captive Washer Cap Screws

A captive washer cap screw is a fastener with an integrated washer beneath the screw head. This design allows for efficient assembly, as the washer remains attached to the screw, eliminating the need for separate washer handling. In mechanical assemblies, captive washer cap screws provide secure fastening, reduce assembly time, and offer enhanced resistance to vibration and loosening ¹.

Purpose of the 3049670 Captive Washer Cap Screw in Truck Operations

The 3049670 Captive Washer Cap Screw secures components and ensures structural integrity in commercial trucks. Its applications include fastening engine components, chassis parts, and other critical assemblies. The screw’s design helps maintain the alignment and stability of these parts, contributing to the overall performance and reliability of the truck.

Key Features of the 3049670 Captive Washer Cap Screw

The 3049670 Captive Washer Cap Screw is characterized by several design and construction features that enhance its functionality and durability. These include a high-strength material composition, a specific thread type for secure fastening, and an integrated washer that provides additional support and distribution of clamping force. These features contribute to the screw’s ability to withstand the rigors of commercial truck operations.

Benefits of Using the 3049670 Captive Washer Cap Screw

The advantages of using the 3049670 Captive Washer Cap Screw include enhanced fastening security, reduced assembly time due to the integrated washer, and improved resistance to vibration and loosening. These benefits contribute to more efficient maintenance procedures and increased reliability of the fastened components.

Installation Guidelines

Proper installation of the 3049670 Captive Washer Cap Screw involves selecting the appropriate torque settings for the application, using the correct tools to avoid damage to the screw or washer, and ensuring that the screw is fully engaged with the threaded hole. Following these guidelines helps maintain the integrity of the fastening and the overall performance of the truck.

Troubleshooting Common Issues

Common problems associated with captive washer cap screws, such as corrosion or stripping, can be addressed through proper maintenance practices. Regular inspection for signs of wear or damage, and replacement of screws that show signs of deterioration, can help prevent issues. Additionally, using corrosion-resistant coatings or materials can extend the service life of the screws in harsh environments.

Maintenance Tips

To prolong the service life and ensure continued reliable operation of the 3049670 Captive Washer Cap Screw, regular inspection and maintenance are recommended. This includes checking for signs of corrosion, ensuring that screws are properly torqued, and replacing any screws that show signs of wear or damage. Adhering to these maintenance practices helps maintain the structural integrity and performance of the truck.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and commitment to quality, Cummins serves commercial truck, bus, construction, agricultural, and power generation markets. The company’s reputation in the industry is built on its dedication to providing reliable, high-performance products that meet the demanding requirements of its customers.

Captive Washer Cap Screw 3049670 in Cummins Engines

The Captive Washer Cap Screw part number 3049670, manufactured by Cummins, is a critical component in several of their engine models. This part is integral in securing various engine parts and ensuring the structural integrity and operational efficiency of the engines.

G855 and NH/NT 855 Engines

In the G855 and NH/NT 855 engines, the 3049670 screw is used to secure the engine’s internal components, ensuring that they remain tightly fastened and properly aligned. This is crucial for maintaining the engine’s performance and longevity.

N14 CELECT and N14 CELECT PLUS Engines

For the N14 CELECT and N14 CELECT PLUS engines, the 3049670 screw plays a vital role in fastening components that are subject to high stress and vibration. Its design ensures that the screw remains securely in place, even under extreme conditions, contributing to the engine’s reliability.

N14 G and N14 MECHANICAL Engines

In the N14 G and N14 MECHANICAL engines, the 3049670 screw is used to fasten parts that are critical to the engine’s operation. Its captive washer feature provides added security, preventing the screw from loosening due to vibrations or other stresses.

QSN14 CM876 N103 and QSNT14 CM876 N102 Engines

In the QSN14 CM876 N103 and QSNT14 CM876 N102 engines, the 3049670 screw is employed in areas where high precision and stability are required. Its design ensures that the fastened components remain securely in position, contributing to the overall efficiency and durability of the engine.

Role of Part 3049670 Captive Washer Cap Screw in Engine Systems

The Part 3049670 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. Its application spans across multiple systems, ensuring the stability and efficiency of the engine’s functionality.

In the Accessory Drive system, this screw plays a significant role in attaching the accessory drive to its mounting. This secure attachment is essential for the smooth transfer of power to accessories like the alternator and water pump, ensuring they operate efficiently without undue stress or misalignment.

For the Air Compressor and Compressor Air systems, the screw is used to fasten components that are vital for maintaining the pressure and flow of air within the system. Proper securing of these parts ensures consistent performance and prevents leaks that could compromise the system’s efficiency.

In the EBM (Electric Blower Motor) Drive system, the screw is employed to fix the drive mechanism, which is responsible for powering the blower motor. This ensures that the motor receives a steady supply of power, contributing to the effective cooling of the engine compartment.

Within the Fuel Pump and Fuel Filter assemblies, the screw is utilized to secure the fuel pump drive, which is critical for the precise delivery of fuel to the engine. This secure attachment helps maintain the integrity of the fuel system, ensuring a consistent fuel supply under varying engine loads.

The Front Gear Train Accessory Drive also benefits from the use of this screw, as it helps in maintaining the alignment and stability of the gear train. This is important for the efficient transfer of power from the engine to various accessories.

Lastly, in the Oil Mounting Pan and Oil Pan systems, the screw is used to secure the oil pan mounting, which is essential for containing the engine oil and ensuring it is properly circulated throughout the engine. This secure attachment prevents oil leaks and maintains the lubrication system’s efficiency.

Overall, the Part 3049670 Captive Washer Cap Screw is a versatile component that enhances the reliability and performance of various engine systems by ensuring secure and stable connections between critical components.

Conclusion

The 3049670 Captive Washer Cap Screw by Cummins is a vital component in the commercial truck industry, offering enhanced fastening security, reduced assembly time, and improved resistance to vibration and loosening. Its applications across various engine systems highlight its importance in maintaining the structural integrity and operational efficiency of commercial trucks. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.