3036665
Threaded Plug
Cummins®

Introduction

The Cummins 3036665 Threaded Plug is a component designed for use in commercial trucks, specifically within the engine system. Its purpose is to seal openings in the engine block or other components, preventing the escape of fluids and gases. This plug is significant in maintaining the integrity of the engine system, ensuring optimal performance and longevity of the truck.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components used to seal threaded holes in various systems. They function by creating a tight seal that prevents the leakage of fluids or gases. In automotive systems, threaded plugs are commonly used in engine blocks, transmission cases, and other components where sealing is necessary to maintain system efficiency and prevent contamination ¹.

Purpose of the Cummins 3036665 Threaded Plug

The Cummins 3036665 Threaded Plug serves a specific role in the operation of a truck by sealing openings in the engine block or other systems. This plug helps maintain the pressure and integrity of the engine’s internal systems, ensuring that fluids and gases remain contained within their designated pathways. By doing so, it contributes to the overall efficiency and performance of the engine.

Key Features

The Cummins 3036665 Threaded Plug is characterized by several key features that enhance its performance and durability. It is made from high-quality materials, typically metal alloys, which provide resistance to corrosion and wear. The plug features a specific thread type that ensures a secure fit within the threaded hole. Its design specifications are tailored to meet the demanding requirements of commercial truck engines, ensuring reliable operation under various conditions.

Benefits

Using the Cummins 3036665 Threaded Plug offers several advantages. It improves system integrity by providing a reliable seal that prevents fluid leaks. This, in turn, helps maintain the engine’s performance and efficiency. Additionally, the plug’s durable construction ensures long-lasting use, reducing the need for frequent replacements and contributing to the overall reliability of the truck.

Installation Process

Proper installation of the Cummins 3036665 Threaded Plug involves several steps to ensure a secure fit. Begin by cleaning the threaded hole to remove any debris or old sealant. Apply a small amount of thread sealant to the threads of the plug to enhance the seal. Using a torque wrench, carefully tighten the plug to the manufacturer’s specified torque settings to avoid over-tightening, which could damage the threads. Finally, inspect the installation to ensure there are no leaks and that the plug is securely in place.

Common Issues and Troubleshooting

Common issues associated with threaded plugs include leaks and improper sealing. These problems can often be traced to incorrect installation, damaged threads, or the use of incompatible sealants. To address these issues, first, ensure that the threaded hole is clean and free of debris. Use the correct type of thread sealant and follow the manufacturer’s torque specifications during installation. If leaks persist, inspect the plug and threads for damage and replace if necessary.

Maintenance Tips

Regular maintenance checks are important to ensure the longevity and proper function of the Cummins 3036665 Threaded Plug. Inspect the plug during routine engine maintenance to look for signs of wear, corrosion, or leaks. Follow the manufacturer’s guidelines for inspection intervals and replacement. Keeping the plug and surrounding areas clean and free of contaminants will also contribute to its reliable operation.

Cummins Overview

Cummins Inc. is a leading manufacturer of diesel engines and related technologies, with a history of innovation and quality in the automotive industry. The company is committed to providing reliable and efficient components for commercial vehicles, including a wide range of engine parts and accessories. Cummins’ dedication to quality and performance ensures that their products, like the 3036665 Threaded Plug, meet the high standards required for commercial truck applications ².

Compatibility with Cummins Engines

The threaded plug part number 3036665, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral for sealing and securing various components within the engine system. Below is a detailed description of its compatibility with the listed engines:

6B5.9 and 6C8.3 Engines

The threaded plug 3036665 is compatible with the 6B5.9 and 6C8.3 engines. These engines are part of the B and C series, known for their robust performance and reliability in various applications.

B5.9 G, B5.9 GAS PLUS CM556, C8.3 G, and C GAS PLUS CM556 Engines

This part fits seamlessly with the B5.9 G, B5.9 GAS PLUS CM556, C8.3 G, and C GAS PLUS CM556 engines. These engines are designed for gas applications and feature advanced control modules for enhanced performance and efficiency.

ISB CM550, ISB5.9G CM2180, ISC CM554, ISL CM554, and ISL G CM2180 Engines

The threaded plug 3036665 is also compatible with the ISB CM550, ISB5.9G CM2180, ISC CM554, ISL CM554, and ISL G CM2180 engines. These engines are part of the ISB and ISL series, known for their versatility and efficiency across various industries.

ISM CM570/870, ISM CM876, and QSB5.9 44 CM550 Engines

The ISM CM570/870, ISM CM876, and QSB5.9 44 CM550 engines also utilize the threaded plug 3036665. These engines are designed for heavy-duty applications, providing robust performance and durability.

K19, K38, K50, KTA19GC, and KTA19GC CM558 Engines

The threaded plug 3036665 is compatible with the K19, K38, K50, KTA19GC, and KTA19GC CM558 engines. These engines are known for their reliability and efficiency in various industrial applications.

L10 GAS, L10 MECHANICAL, M11 CELECT PLUS, M11 MECHANICAL, N14 MECHANICAL, and NH/NT 855 Engines

Finally, the threaded plug 3036665 fits the L10 GAS, L10 MECHANICAL, M11 CELECT PLUS, M11 MECHANICAL, N14 MECHANICAL, and NH/NT 855 engines. These engines cater to a range of applications, from light-duty to heavy-duty, ensuring versatility and performance.

This comprehensive compatibility ensures that the threaded plug 3036665 can be used across a wide array of Cummins engines, providing a reliable solution for sealing and securing various components within the engine system.

Role of Part 3036665 Threaded Plug in Engine Systems

The 3036665 Threaded Plug is an essential component in various engine systems, ensuring the integrity and efficiency of multiple subsystems. Here’s how it integrates with the provided components:

Aftercooler Systems

In aftercooler systems, the 3036665 Threaded Plug is utilized to seal openings in the aftercooler housing. This prevents air or fluid leaks, maintaining the efficiency of the aftercooling process. It is particularly important in Aftercooler - Auto and Aftercooler - Auto / Multi - Unit systems where precise temperature regulation is necessary for optimal engine performance.

Turbocharger and Exhaust Systems

When installed in the Turbocharger or Exhaust Cooler Leak Test Kit, the 3036665 Threaded Plug helps in sealing test points or unused ports. This ensures that the turbocharger operates within specified parameters and that exhaust gases are effectively managed, contributing to overall engine efficiency and emissions control.

Engine Block and Cylinder Head

In the Engine Block and Cylinder Head, the 3036665 Threaded Plug is often used to seal off coolant or oil passages that are not in use. This maintains the integrity of the cooling and lubrication systems, ensuring that the engine block and cylinder head remain at optimal temperatures and are properly lubricated.

Fuel System Components

For components like the Fuel Pump and Fuel Pump & Drive (Cust), the 3036665 Threaded Plug is employed to seal ports that are not utilized in specific fuel system configurations. This prevents fuel leaks and ensures that the fuel system operates efficiently, delivering the correct fuel pressure and flow to the engine.

Drive Accessory and Transmission Housing

In the Drive Accessory Top Level Assembly and Transmission Housing, the 3036665 Threaded Plug is used to seal various openings, ensuring that no contaminants enter the system and that all fluids remain contained. This is vital for the longevity and performance of both the drive accessories and the transmission.

Injector and Plumbing Systems

The 3036665 Threaded Plug plays a role in Injector systems by sealing off unused injector ports, ensuring that fuel delivery is precise and that there are no leaks in the system. In Aftercooler Plumbing and other plumbing arrangements, it seals connections and openings, maintaining the integrity of the fluid pathways.

Miscellaneous Applications

The plug is also found in components such as the Short Block Engine Kit, Water Manifold, and Housing - Transmission. In these applications, it ensures that all systems are sealed correctly, preventing leaks and maintaining the efficiency of the engine and its subsystems.

Overall, the 3036665 Threaded Plug is a versatile component that enhances the reliability and performance of various engine systems by ensuring that all connections are sealed effectively.

Conclusion

The Cummins 3036665 Threaded Plug is a critical component in the maintenance and operation of commercial truck engines. Its role in sealing various engine components ensures the integrity and efficiency of the engine system. Proper installation, regular maintenance, and understanding its compatibility with different Cummins engines are essential for maximizing its benefits and ensuring the longevity of the truck’s engine system.