118939
Roll Pin
Cummins®

Introduction

The 118939 Roll Pin is a component manufactured by Cummins, a prominent entity in the commercial vehicle industry. This roll pin is integral to commercial truck applications, ensuring the secure assembly of various truck components. Cummins is known for its dedication to quality and innovation, ensuring that its parts, including the 118939 Roll Pin, meet the stringent requirements of heavy-duty truck operations ¹.

Basic Concepts of Roll Pins

Roll pins are cylindrical fasteners utilized in mechanical systems to secure components in place. They are inserted into pre-drilled holes that span across two or more parts, providing a strong, vibration-resistant connection without the need for additional fasteners. This method is particularly advantageous in dynamic environments such as those found in commercial trucks ².

Purpose of the 118939 Roll Pin in Truck Operations

The 118939 Roll Pin serves a specific function in the operation of commercial trucks by securing components that are subject to significant stress and vibration. Its application can be found in various truck components, ensuring that parts remain aligned and securely fastened under operating conditions. This contributes to the overall reliability and performance of the truck ³.

Key Features of the 118939 Roll Pin

The design and material characteristics of the 118939 Roll Pin make it suitable for heavy-duty applications. It is crafted from high-quality materials that offer durability, a precise fit, and resistance to wear and corrosion. These features ensure that the roll pin can withstand the rigors of commercial truck use, providing a long-lasting and reliable fastening solution ⁴.

Benefits of Using the 118939 Roll Pin

Utilizing the 118939 Roll Pin offers several advantages. It enhances the reliability of truck components by providing a secure and vibration-resistant connection. The roll pin’s design allows for ease of installation, reducing downtime during maintenance procedures. Additionally, its contribution to the overall performance and longevity of truck components underscores its value in commercial truck operations ⁵.

Installation and Usage Guidelines

Proper installation of the 118939 Roll Pin is crucial for ensuring a secure fit. The process involves pressing the roll pin into pre-drilled holes that align the components to be joined. Specific tools may be required to achieve the correct installation depth and ensure the roll pin is flush with the surrounding material, preventing any protrusion that could lead to damage or failure.

Troubleshooting Common Issues

Common problems associated with roll pins include misalignment and wear. Misalignment can occur if the holes are not properly drilled or if the components are not correctly positioned before installation. Wear may result from excessive vibration or environmental factors. Addressing these issues may involve realigning components, replacing worn roll pins, or applying maintenance practices to reduce vibration and protect against corrosion.

Maintenance Tips

Regular inspection and maintenance of the 118939 Roll Pin are recommended to ensure continued reliable performance. Signs of wear, such as corrosion or physical damage, should be monitored. Replacement may be necessary if significant wear is observed, or if the roll pin no longer provides a secure connection between components.

Cummins: A Brief Overview

Cummins Inc. is a leader in the commercial vehicle industry, with a history of innovation and quality in component manufacturing. The company offers a wide range of products designed to meet the needs of various commercial applications, emphasizing durability, efficiency, and reliability. Cummins’ commitment to quality is evident in its components, including the 118939 Roll Pin, which are engineered to perform under the demanding conditions of commercial truck operations .

Compatibility of 118939 Roll Pin with Cummins Engines

The 118939 Roll Pin, manufactured by Cummins, is designed to fit seamlessly into various Cummins engine models. This part is engineered to provide stability and alignment in the engine’s moving parts, ensuring optimal performance and longevity.

Compatible Engines

• 6C8.3
• G855
• G855 CM558
• GTA855 CM558 (CM2358) G101
• K19
• K38
• K50
• M11 MECHANICAL
• N14 CELECT
• N14 G
• N14 MECHANICAL
• NH/NT 855
• QSK19 CM500
• V28

Grouped Compatibility

• G855 Series

  • G855
  • G855 CM558
  • GTA855 CM558 (CM2358) G101

• N14 Series

  • N14 CELECT
  • N14 G
  • N14 MECHANICAL

• QSK Series

  • QSK19 CM500

The 118939 Roll Pin is meticulously designed to fit these engines, ensuring that it meets the specific requirements of each model. Its compatibility across these engines underscores its versatility and importance in maintaining engine integrity.

Role of 118939 Roll Pin in Engine Systems

The 118939 Roll Pin is integral to the efficient functioning of various engine components. It is utilized in the Accessories Mounting system to ensure secure attachment of accessories to the engine, enhancing stability and performance.

In the Actuator system, the Roll Pin facilitates smooth operation by allowing precise movement and alignment of actuator components. This is essential for the actuator’s role in controlling various engine functions.

The Cam Follower Assembly relies on the Roll Pin to maintain proper alignment and reduce friction between the cam and the follower. This ensures accurate tracking and efficient power transmission within the engine.

In the Cam Follower Housing and Cam Follower Kit, the Roll Pin plays a key role in securing the follower within the housing, which is vital for the consistent operation of the cam mechanism.

For the EBM: Follower, Cam and Exhaust Cam Follower Kit, the Roll Pin ensures that the follower moves smoothly over the cam, which is critical for the timing and efficiency of the engine’s exhaust system.

The Float Tank and Float Tank Assembly use the Roll Pin to secure components within the tank, ensuring that the float valve operates correctly to maintain the appropriate fuel level.

In the Fuel System Accessories and Fuel Tank, the Roll Pin is used to secure various fittings and components, ensuring a leak-free and efficient fuel delivery system.

The Housing, Cam Follower and Master Cam Follower Housing incorporate the Roll Pin to maintain the structural integrity and alignment of the cam follower, which is essential for the precise operation of the camshaft.

Finally, in the Engine Kit and Engine Spares Kit, the Roll Pin is a fundamental component that ensures the reliable assembly and function of various engine parts, contributing to the overall performance and durability of the engine.

Conclusion

The 118939 Roll Pin by Cummins is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its design, material quality, and compatibility with various engine models make it a reliable and essential part for ensuring the secure assembly and efficient functioning of engine components. Regular maintenance and proper installation are key to maximizing the performance and longevity of this Cummins part.