3104892
Oil Pan
Cummins®

The 3104892 Studded Captive Washer Screw is a specialized fastener produced by Cummins, a well-established manufacturer in the commercial truck industry. This screw is designed for specific applications within commercial trucks, ensuring reliable performance and durability in demanding environments.

Basic Concepts

A Studded Captive Washer Screw is a type of fastener that includes a threaded stud, a captive washer, and a screw head. The captive washer is integrated into the screw, which helps in distributing the load more evenly and preventing the screw from loosening over time. In a truck’s mechanical system, this screw plays a role by securing components together, ensuring they remain firmly in place despite vibrations and other dynamic forces ¹.

Purpose and Role

The 3104892 Studded Captive Washer Screw serves a vital function in the operation of commercial trucks. It is used in various applications, such as securing engine components, transmission parts, and other critical assemblies. By providing a secure and stable connection, this screw supports the integrity of the truck’s mechanical systems, contributing to overall performance and safety ².

Key Features

The 3104892 Studded Captive Washer Screw boasts several key features that enhance its performance. Its design includes a robust threaded stud and a captive washer that remains attached to the screw, ensuring consistent load distribution. The screw is made from high-quality materials, offering excellent corrosion resistance and durability. Additionally, its unique design allows for easy installation and removal, making it a practical choice for maintenance and repair tasks ³.

Benefits

The use of the 3104892 Studded Captive Washer Screw provides several benefits. Its durable construction and corrosion-resistant properties ensure long-lasting performance, even in harsh operating conditions. The captive washer design enhances load distribution, reducing the risk of screw loosening and component failure. Furthermore, the ease of installation and removal contributes to efficient maintenance practices, potentially reducing downtime and repair costs.

Installation Process

Proper installation of the 3104892 Studded Captive Washer Screw involves several steps to ensure a secure fit. Begin by cleaning the installation area to remove any debris or contaminants. Use the appropriate tools, such as a torque wrench, to install the screw to the manufacturer’s specified torque settings. Ensure that the screw is aligned correctly and that the captive washer is seated properly to distribute the load effectively. Following these steps will help achieve a reliable and durable connection.

Troubleshooting

Common issues with the 3104892 Studded Captive Washer Screw may include loosening, corrosion, or damage to the screw or washer. These problems can arise from improper installation, exposure to harsh environments, or normal wear and tear. To address these issues, inspect the screw regularly for signs of corrosion or damage. If loosening is detected, re-tighten the screw to the specified torque settings. In cases of severe corrosion or damage, replacement of the screw may be necessary to maintain system integrity.

Maintenance Tips

Regular maintenance of the 3104892 Studded Captive Washer Screw is important to ensure its longevity and optimal performance. Inspect the screw during routine maintenance checks for any signs of wear, corrosion, or loosening. Clean the screw and surrounding area to remove any buildup of dirt or debris. If any issues are detected, address them promptly to prevent further damage. Following these maintenance practices will help extend the life of the screw and ensure reliable operation.

Cummins Overview

Cummins is a renowned manufacturer with a rich history in the commercial truck industry. The company offers a wide range of products, including engines, powertrain components, and aftermarket parts. Cummins is known for its commitment to quality, innovation, and customer satisfaction, making it a trusted name among fleet operators and maintenance professionals.

Studded Captive Washer Screw (Part 3104892) in Cummins Engines

The Studded Captive Washer Screw (Part 3104892) is a critical component in various Cummins engines, ensuring secure fastening and stability. This part is integral to the assembly and maintenance of the ISM CM570/870 and ISM CM876 engines.

ISM CM570/870 Engines

In the ISM CM570/870 engines, the Studded Captive Washer Screw is used in several key areas where secure fastening is essential. These engines, known for their robust performance, rely on this screw to maintain the integrity of various components. The screw’s design ensures that it can withstand the high stresses and vibrations typical in engine environments, providing a reliable connection that is crucial for the engine’s operation.

ISM CM876 Engines

Similarly, in the ISM CM876 engines, the Studded Captive Washer Screw plays a vital role. This engine, part of Cummins’ lineup, benefits from the screw’s ability to provide a strong and stable fastening solution. The screw’s studded design allows for easy installation and removal, which is particularly useful during maintenance and repair operations. Its use in the ISM CM876 engine ensures that all connected parts remain securely in place, contributing to the engine’s overall performance and longevity.

Role of Part 3104892 Studded Captive Washer Screw in Engine Systems

The 3104892 Studded Captive Washer Screw is integral to the secure assembly and operation of various engine components. In the oil pan, this screw ensures a tight seal, preventing oil leaks that could lead to engine damage. It maintains the integrity of the oil pan by withstanding the pressures and vibrations inherent in engine operation.

In the cylinder head, the studded captive washer screw plays a significant role in securing gaskets and ensuring proper compression. This is essential for maintaining the seal between the cylinder head and engine block, which is vital for efficient combustion and preventing coolant or oil leaks.

When used in the valve cover, this screw helps to keep the cover securely in place, protecting the valve train components from contaminants and ensuring that no oil escapes, which could lead to a loss of lubrication and subsequent engine wear.

In fuel system components such as the fuel rail, the studded captive washer screw ensures that fuel lines and injectors are properly mounted. This is important for maintaining fuel pressure and preventing fuel leaks, which are hazardous and can affect engine performance.

For intake manifolds, this screw is used to secure the manifold to the engine block, ensuring a proper seal that allows for efficient air intake. A secure manifold is essential for optimal airflow, which directly impacts engine performance and fuel efficiency.

In exhaust systems, particularly at the manifold or catalytic converter, the studded captive washer screw helps to maintain a secure connection. This is important for reducing emissions and ensuring that exhaust gases are properly directed away from the engine compartment.

Overall, the studded captive washer screw is a key component in maintaining the structural integrity and operational efficiency of various engine systems.

Conclusion

The 3104892 Studded Captive Washer Screw is a critical component in the commercial truck industry, providing reliable performance and durability in demanding environments. Its key features, including a robust threaded stud and captive washer, ensure consistent load distribution and easy installation. The benefits of using this screw, such as long-lasting performance and efficient maintenance practices, contribute to the overall integrity and safety of truck mechanical systems. Proper installation, regular maintenance, and prompt troubleshooting are essential to maximize the screw’s effectiveness and longevity.