3012473
Captive Washer Cap Screw
Cummins®

The 3012473 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the automotive industry, is known for its commitment to quality and innovation. This particular screw is significant due to its role in ensuring the integrity and efficiency of truck components, contributing to the overall reliability and performance of commercial vehicles ¹.

Basic Concepts of Captive Washer Cap Screws

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. These screws are commonly used in mechanical assemblies where consistent and secure fastening is required, providing both structural integrity and sealing capabilities ².

Purpose of the 3012473 Captive Washer Cap Screw in Truck Operation

The 3012473 Captive Washer Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various application areas, including engine components, chassis assemblies, and other critical systems. Its functional importance lies in providing a secure and reliable fastening solution that helps maintain the structural integrity of truck parts, ensuring they operate efficiently under demanding conditions ³.

Key Features of the 3012473 Captive Washer Cap Screw

The 3012473 Captive Washer Cap Screw is characterized by several design elements and material properties that enhance its performance. These include a specific thread type that ensures a strong grip, the integration of a washer that provides additional sealing and load distribution, and the use of durable materials that resist corrosion and wear. These features contribute to the screw’s reliability and longevity in commercial truck applications ⁴.

Benefits of Using the 3012473 Captive Washer Cap Screw

The 3012473 Captive Washer Cap Screw offers several advantages. Its design allows for ease of installation, as the integrated washer eliminates the need for separate components. This reduces the risk of part loss during assembly and streamlines the installation process. Additionally, the screw provides enhanced sealing capabilities, which help prevent leaks and maintain the integrity of truck systems. The durable construction ensures long-lasting performance, even in harsh operating environments ⁵.

Installation and Usage Guidelines

Proper installation of the 3012473 Captive Washer Cap Screw involves several steps to ensure a secure fit. Begin by cleaning the installation area to remove any debris or contaminants. Align the screw with the designated hole and use a torque wrench to tighten it to the specified torque settings. It is important to follow the manufacturer’s guidelines to avoid over-tightening, which can damage the screw or the surrounding components. Regular inspection and maintenance are recommended to ensure the screw remains secure and functional ⁶.

Troubleshooting Common Issues

Frequent problems associated with Captive Washer Cap Screws include loosening due to vibration or thermal expansion, and corrosion from exposure to moisture or chemicals. To address these issues, regular inspections should be conducted to check for signs of wear or damage. If loosening is detected, re-tightening the screw to the proper torque specifications can resolve the issue. Corrosion can be mitigated by applying a protective coating or replacing the screw if significant damage is present ⁷.

Maintenance Tips

To ensure the longevity and reliable performance of the 3012473 Captive Washer Cap Screw, regular inspection and maintenance are recommended. This includes checking for signs of wear, corrosion, or loosening, and addressing any issues promptly. Additionally, ensuring that the installation area remains clean and free of contaminants can help prevent damage to the screw and surrounding components. Following these maintenance practices will contribute to the overall efficiency and reliability of commercial truck operations ⁸.

Cummins: A Brief 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 is committed to quality, innovation, and customer satisfaction. The company’s product range includes engines for on-highway and off-highway applications, as well as filtration and power generation systems. Cummins’ dedication to excellence is evident in its continued investment in research and development, ensuring that its products meet the evolving needs of the automotive industry ⁹.

Cummins Captive Washer Cap Screw 3012473 Compatibility with Engine Models

The Cummins Captive Washer Cap Screw part number 3012473 is a versatile component that fits into various Cummins engine models. This part is designed to secure and stabilize different parts within the engine, ensuring optimal performance and reliability. Below is a detailed description of its compatibility with specific Cummins engine models:

G855, K19, K38, K50, QSK19 CM500, QSK19G, QSK19

The 3012473 Captive Washer Cap Screw is compatible with the G855, K19, K38, K50, QSK19 CM500, QSK19G, and QSK19 engines. These engines are part of Cummins’ lineup of high-performance diesel engines, often used in heavy-duty applications such as construction equipment, marine vessels, and power generation. The screw’s design ensures it can withstand the rigorous demands of these engines, providing a secure fastening solution for various components.

N14 CELECT, N14 CELECT PLUS, N14 MECHANICAL

The 3012473 part is also suitable for the N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines. These engines are known for their durability and efficiency, commonly used in on-highway and off-highway applications. The Captive Washer Cap Screw’s robust construction makes it an ideal choice for securing parts in these engines, ensuring longevity and reliability.

NH/NT 855, QSN14 CM876 N103, QSNT14 CM876 N102

The 3012473 Captive Washer Cap Screw fits the NH/NT 855, QSN14 CM876 N103, and QSNT14 CM876 N102 engines. These engines are part of Cummins’ range of high-output diesel engines, often utilized in heavy-duty applications such as mining and construction. The screw’s design allows it to provide a tight and secure fit, essential for maintaining the integrity of engine components under demanding conditions.

QST30 CM552, V28, V903, VTA903 CM2250 V105

Lastly, the 3012473 part is compatible with the QST30 CM552, V28, V903, and VTA903 CM2250 V105 engines. These engines are part of Cummins’ extensive lineup, designed for various applications, including industrial, marine, and power generation. The Captive Washer Cap Screw’s precision engineering ensures it can be used across these diverse engines, providing a reliable fastening solution that meets the specific needs of each engine model.

Role of Part 3012473 Captive Washer Cap Screw in Engine Systems

The 3012473 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. It ensures that parts remain firmly in place, thereby contributing to the overall stability and efficiency of the engine system.

Adapter Thermostat Housing

In the adapter thermostat housing, the 3012473 Captive Washer Cap Screw helps maintain a tight seal, preventing coolant leaks and ensuring consistent temperature regulation within the engine.

Corrosion Resistor Bracket

For the corrosion resistor bracket, this screw plays a role in securing the bracket to the engine, protecting sensitive components from corrosive elements and extending the lifespan of the engine.

Drive and Generator

In the drive and generator assemblies, the 3012473 Captive Washer Cap Screw ensures that all moving parts are correctly aligned and securely fastened, which is essential for the efficient transfer of power and the generation of electricity.

Engine Brake

Within the engine brake system, this screw helps in maintaining the structural integrity of the brake components, ensuring reliable operation during deceleration.

F.D. Tubing Mounting

For F.D. tubing mounting, the screw secures the tubing in place, which is vital for the proper flow of fluids and gases within the engine system.

Fan Drive and Fan Drive Arrangement

In the fan drive and fan drive arrangement, the 3012473 Captive Washer Cap Screw ensures that the fan components are correctly mounted and operate efficiently to manage engine temperature.

Fan Hub and Fan Hub Mounting Pulley

The screw is used in the fan hub and fan hub mounting pulley to secure these components, ensuring they function correctly to dissipate heat from the engine.

Fuel Bypass Mounting Tube

In the fuel bypass mounting tube, this screw ensures that the tube is firmly attached, allowing for the safe and efficient bypass of fuel when necessary.

Fuel Filter

For the fuel filter, the 3012473 Captive Washer Cap Screw secures the filter housing, ensuring that it remains in place and functions correctly to clean the fuel before it reaches the engine.

Governor Oil Filter

In the governor oil filter assembly, this screw helps in maintaining the filter’s position, ensuring clean oil circulation which is vital for the governor’s operation.

Hydraulic Pump Drive

The screw is utilized in the hydraulic pump drive to secure the pump components, ensuring efficient hydraulic fluid circulation.

Lube Oil Cooler and Lubricating Oil Filter Cooler

In both the lube oil cooler and lubricating oil filter cooler, the 3012473 Captive Washer Cap Screw ensures these components are securely mounted, contributing to effective oil cooling and filtration.

Lubricating Oil Mounting Cooler

For the lubricating oil mounting cooler, this screw secures the cooler to the engine, ensuring it operates efficiently to maintain optimal oil temperature.

Mounting Alternator

In the mounting alternator, the screw ensures that the alternator is firmly attached, allowing for reliable electricity generation.

Rocker Housing and Rocker Mounting Housing

For the rocker housing and rocker mounting housing, this screw secures the rocker components, ensuring smooth valve operation.

Throttle Lever

In the throttle lever assembly, the screw ensures that the lever is correctly mounted, allowing for precise control of the engine’s power output.

Tube Support

For tube support, the 3012473 Captive Washer Cap Screw secures the tubes in place, ensuring they remain stable and do not interfere with other engine components.

Valve Mounting Cover

In the valve mounting cover, this screw ensures that the cover is securely attached, protecting the valve components from damage.

Water Outlet Mounting

For the water outlet mounting, the screw secures the outlet, ensuring efficient coolant flow out of the engine.

Water Transfer Tube

In the water transfer tube, this screw ensures that the tube is firmly mounted, allowing for the effective transfer of coolant within the engine system.

Conclusion

The 3012473 Captive Washer Cap Screw is a critical component in the maintenance and operation of commercial trucks. Its design and features ensure secure fastening, enhanced sealing, and durability, contributing to the overall reliability and performance of truck components. Proper installation, regular maintenance, and troubleshooting common issues are essential to maximize the benefits of this Cummins part. Cummins’ commitment to quality and innovation is reflected in the design and functionality of the 3012473 Captive Washer Cap Screw, making it a valuable asset in commercial truck applications.