3012483
Captive Washer Cap Screw
Cummins®

The 3012483 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this component to meet the rigorous demands of truck operations. This screw plays a significant role in ensuring the secure attachment of various components within the truck’s structure.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that incorporates a washer directly into the screw design. This integration ensures that the washer remains in place during installation, reducing the risk of loss and simplifying the assembly process. In mechanical assemblies, these screws are used to secure components together while providing a consistent and reliable clamping force. The washer component helps distribute the load more evenly, preventing damage to the surfaces being joined and enhancing the overall stability of the assembly ¹.

Purpose and Role in Truck Operation

In the context of commercial truck operations, the 3012483 Captive Washer Cap Screw serves to secure critical components and ensure structural integrity. It is often used in applications where vibration and dynamic loads are common, such as in the engine compartment or chassis. By providing a secure and stable connection, this screw helps maintain the alignment and functionality of various truck components, contributing to the overall reliability and safety of the vehicle ².

Key Features

The 3012483 Captive Washer Cap Screw boasts several key features that enhance its performance and durability. Its design includes an integrated washer, which simplifies installation and reduces the likelihood of washer loss. The screw is typically made from high-strength materials, such as alloy steel, to withstand the demanding conditions encountered in commercial truck applications. Additionally, the screw may feature a corrosion-resistant coating to protect against environmental factors, ensuring long-term reliability ³.

Benefits

Using the 3012483 Captive Washer Cap Screw offers several advantages. The integrated washer design streamlines the installation process, saving time and reducing the potential for errors. The high-strength material composition ensures durability and reliability under heavy loads and dynamic conditions. Furthermore, the corrosion-resistant coating enhances the screw’s longevity, making it a cost-effective solution for commercial truck maintenance ⁴.

Installation Process

Proper installation of the 3012483 Captive Washer Cap Screw involves several steps to ensure optimal performance. Begin by cleaning the installation site to remove any debris or contaminants. Position the screw in the designated hole, ensuring it is aligned correctly. Use a torque wrench to tighten the screw to the specified torque setting, avoiding over-tightening, which can lead to damage. Verify the connection is secure and check for proper alignment of the attached components.

Troubleshooting and Maintenance

Common issues with the 3012483 Captive Washer Cap Screw may include loosening due to vibration or corrosion. Regular inspections can help identify these problems early. If loosening is detected, re-tighten the screw to the specified torque setting. In cases of corrosion, consider replacing the screw to prevent further degradation. Maintenance tips include keeping the installation site clean and dry, and periodically checking torque settings to ensure continued secure attachment.

Safety Considerations

When working with the 3012483 Captive Washer Cap Screw, several safety guidelines should be observed. Ensure proper handling to avoid injury, and use the correct tools, such as a torque wrench, to achieve the specified torque settings. Be mindful of environmental factors, such as exposure to moisture or chemicals, which can affect the screw’s performance. Always follow manufacturer recommendations for installation and maintenance to ensure safety and reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial vehicle applications. Cummins’ commitment to innovation and customer satisfaction has made it a trusted name in the industry.

Compatibility with Cummins Engines

The Captive Washer Cap Screw part number 3012483, manufactured by Cummins, is designed to be compatible with a variety of Cummins engine models. This part is essential for securing components within the engine assembly, ensuring that parts remain firmly in place during operation.

Compatibility with Specific Engine Models

• G855
• K19
• L10 GAS
• L10 MECHANICAL
• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL
• NH/NT 855
• V28
• V903
• VTA903 CM2250 V105

Grouping of Compatible Engines

• L10 Series: The Captive Washer Cap Screw 3012483 is suitable for both the L10 GAS and L10 MECHANICAL engines, ensuring a secure fit for the components in these engines.
• N14 Series: This part is compatible with the N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines, providing a reliable fastening solution across these models.
• V Series: The screw fits with the V28 and V903 engines, making it a versatile component for these engine types.
• VTA903 CM2250 V105: This part is also designed to work with the VTA903 CM2250 V105 engine, ensuring compatibility across a range of Cummins engine models.

This part is engineered to meet the stringent requirements of Cummins engines, providing durability and reliability in various operational conditions.

Role of Part 3012483 Captive Washer Cap Screw in Engine Systems

The 3012483 Captive Washer Cap Screw is integral in securing various components within engine systems, ensuring stability and proper function.

In the air and exhaust manifold assemblies, this screw plays a role in fastening the manifold to the engine block, ensuring a secure seal that prevents air or exhaust leaks.

For the air starting valve, it is used to attach the valve securely to its mounting point, which is essential for the valve’s operation in starting the engine using compressed air.

At the alternator location, the screw is employed to mount the alternator to the engine, ensuring it remains in place and functions correctly to generate electrical power.

The aneroid bracket, which may be part of an air pressure system, utilizes this screw to attach securely to the engine, maintaining the integrity of the pressure system.

In the corrosion resistor bracket, the screw helps in attaching the bracket to the engine, which is crucial for protecting engine components from corrosion.

The crankshaft pulley assembly often requires this screw to secure the pulley to the crankshaft, ensuring smooth operation and power transmission.

For engine mounting, the screw is used in various points to secure the engine to its mounts, providing stability and reducing vibrations.

In an exhaust manifold conversion kit, the screw is utilized to fasten new or modified components to the engine, ensuring a proper fit and function.

The fan drive arrangement and fan drive ratios components use this screw to secure the fan to the engine, which is vital for cooling the engine effectively.

For the fan mounting hub, the screw ensures the fan is securely attached, allowing it to operate without wobbling or detachment.

In the flywheel, flywheel housing support, and flywheel mounting housing, the screw is used to secure these components, ensuring the flywheel operates smoothly and transmits power efficiently.

The front engine support utilizes this screw to attach support brackets, providing additional stability to the engine.

For the fuel filter and fuel mounting filter, the screw is used to secure the filter to its mounting point, ensuring it remains in place and functions correctly.

In the generator drive system, the screw is employed to attach the generator to the engine, ensuring it operates efficiently to produce electricity.

The lube oil filter-cooler and lubricating oil filter assemblies use this screw to secure the filters, ensuring they remain in place and function correctly to filter and cool the oil.

For mounting alternator and mounting fan hub, the screw is essential in securing these components to the engine, ensuring they operate without issues.

In the oil pan, the screw is used to attach the pan securely to the engine block, preventing oil leaks.

Lastly, in the radiator support, the screw helps in securing the radiator to its mounts, ensuring it remains in place and functions correctly to cool the engine.

Conclusion

The 3012483 Captive Washer Cap Screw is a critical component in the maintenance and operation of commercial trucks, particularly those equipped with Cummins engines. Its design, featuring an integrated washer and high-strength material, ensures reliable and durable fastening solutions across a variety of engine components. Proper installation, regular maintenance, and adherence to safety guidelines are essential to maximize the performance and longevity of this Cummins part.