3007635
Expansion Plug
Cummins®

The Cummins 3007635 Expansion Plug is a component designed for use in commercial trucks. It serves a specific function within the vehicle’s systems, contributing to the overall operation and efficiency of the truck. Understanding its purpose and role is fundamental for maintaining and optimizing the performance of commercial vehicles.

Basic Concepts of Expansion Plugs

An expansion plug is a device used in various automotive and industrial applications to seal openings in systems where pressure or temperature changes occur. It is designed to expand when heated, creating a tight seal that prevents leaks and maintains system integrity. These plugs are commonly used in engine and cooling systems to ensure that fluids remain contained under varying operational conditions ¹.

Purpose of the 3007635 Expansion Plug

The 3007635 Expansion Plug plays a role in the operation of a truck by sealing specific points within the engine or cooling system. Its function is to maintain the integrity of the system by preventing the escape of fluids, which could lead to decreased performance or damage. By ensuring a secure seal, it contributes to the efficient operation of the truck’s systems ².

Key Features

The 3007635 Expansion Plug is constructed from materials that can withstand high temperatures and pressures, ensuring durability and reliability. Its design includes attributes that allow it to expand and contract with temperature changes, maintaining a seal under various conditions. Unique characteristics of this plug may include a specific thread size or shape that ensures a precise fit within the system it is designed for ³.

Benefits

The use of the 3007635 Expansion Plug offers several benefits. It enhances system integrity by providing a reliable seal, which contributes to the overall performance of the truck. Additionally, its design and material composition support longevity, reducing the need for frequent replacements and maintenance. The plug’s ability to adapt to temperature changes ensures consistent performance across a range of operating conditions.

Installation Process

Installing the 3007635 Expansion Plug requires following a specific procedure to ensure it functions correctly. The process involves cleaning the installation site, applying the appropriate lubricant if necessary, and threading the plug into place. Tools such as a torque wrench may be required to achieve the correct tightness without over-tightening, which could damage the plug or the system.

Troubleshooting Common Issues

Common problems with expansion plugs can include leaks due to improper installation or wear over time. Troubleshooting steps may involve inspecting the plug for signs of damage, ensuring it is correctly installed, and replacing it if necessary. Regular checks can help identify issues before they lead to more significant problems.

Maintenance Tips

To ensure the optimal performance and longevity of the 3007635 Expansion Plug, regular maintenance is recommended. This includes periodic inspections for signs of wear or damage and ensuring that the plug remains securely in place. Care instructions may involve cleaning the area around the plug to prevent debris from affecting its operation.

Compatibility of Cummins Expansion Plug Part 3007635

The Cummins Expansion Plug part number 3007635 is designed to fit a variety of Cummins engine models. This part is crucial for maintaining the integrity of the engine’s cooling system by preventing leaks and ensuring proper sealing. Below is a detailed breakdown of the engines with which this expansion plug is compatible:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of the B Series family, known for their robust performance and reliability. The expansion plug part 3007635 fits seamlessly into these engines, ensuring that the cooling system remains leak-free and efficient.

G855 and G855 CM558 Engines

The G855 and G855 CM558 engines are part of the G Series, designed for heavy-duty applications. The expansion plug part 3007635 is engineered to fit these engines, providing a reliable seal that is essential for maintaining optimal engine performance.

GTA855 CM558 (CM2358) G101 Engine

The GTA855 CM558 (CM2358) G101 engine is a high-performance model within the G Series. This expansion plug is specifically designed to fit this engine, ensuring that the cooling system operates without any leaks or inefficiencies.

ISB3.9 CM2220 B107, ISM CM570, ISM CM570/870, ISM CM876, ISM11 CM876 SN Engines

The ISB3.9 CM2220 B107, ISM CM570, ISM CM570/876, ISM CM876, and ISM11 CM876 SN engines are part of the ISM and ISB Series, known for their versatility and efficiency. The expansion plug part 3007635 fits these engines, ensuring that the cooling system remains sealed and functional.

K19 Engine

The K19 engine is a part of the K Series, designed for heavy-duty applications. The expansion plug part 3007635 is compatible with this engine, providing a reliable seal that is essential for maintaining optimal engine performance.

L10 CELECT, L10 GAS, and L10 MECHANICAL Engines

The L10 CELECT, L10 GAS, and L10 MECHANICAL engines are part of the L Series, known for their reliability and efficiency. The expansion plug part 3007635 fits these engines, ensuring that the cooling system remains sealed and functional.

M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL Engines

The M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL engines are part of the M Series, designed for a wide range of applications. The expansion plug part 3007635 fits these engines, ensuring that the cooling system remains sealed and functional.

N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL Engines

The N14 CELECT, N14 CELECT PLUS, N14 G, and N14 MECHANICAL engines are part of the N Series, known for their durability and performance. The expansion plug part 3007635 fits these engines, ensuring that the cooling system remains sealed and functional.

NH/NT 855 Engine

The NH/NT 855 engine is part of the NT Series, designed for heavy-duty applications. The expansion plug part 3007635 fits this engine, ensuring that the cooling system remains sealed and functional.

QSB3.9 CM2880 B138, QSB5.9 CM850, and QSB6.7 CM850 (CM2850) Engines

The QSB3.9 CM2880 B138, QSB5.9 CM850, and QSB6.7 CM850 (CM2850) engines are part of the QSB Series, known for their versatility and efficiency. The expansion plug part 3007635 fits these engines, ensuring that the cooling system remains sealed and functional.

Role of Part 3007635 Expansion Plug in Engine Systems

The expansion plug, identified by part number 3007635, is an essential component in various engine systems, ensuring the integrity and efficiency of the engine’s operation. Here’s how it integrates with different engine components:

Camshaft and Related Components

In engines equipped with a camshaft and camshaft and gear assemblies, the expansion plug plays a role in maintaining the pressure within the engine block. This is particularly important during the valve operation cycles, where consistent pressure helps in the smooth functioning of the camshaft and its associated gears.

Piston and Connecting Rod Assemblies

For the connecting rod and piston assemblies, the expansion plug ensures that the combustion chamber maintains optimal pressure. This is vital for the efficient transfer of force from the piston to the connecting rod, thereby enhancing the overall performance and longevity of these components.

Crosshead and Cylinder Block

In engines with a crosshead system, the expansion plug assists in regulating the pressure that affects the crosshead’s movement. Similarly, within the cylinder block hardware kit and cylinder block kit, the plug helps in preserving the structural integrity of the block by preventing excessive pressure build-up.

Cylinder Head and Related Kits

The cylinder head rebuild kit and cylinder (top-level assembly) head benefit from the expansion plug by ensuring that the head cylinder maintains a stable environment. This is crucial for the proper sealing and operation of the valves and other head components.

EBM Components

For EBM-head and EBM: parts, the expansion plug is integral in maintaining the performance standards set by these high-quality components. It ensures that the pressure within the engine block does not fluctuate, which is essential for the optimal function of EBM: performance parts.

Exhaust and Fuel Systems

In the exhaust manifold and fuel connection systems, the expansion plug indirectly supports the efficient operation by ensuring that the engine block’s pressure is consistent. This consistency is necessary for the proper combustion process and the effective management of exhaust gases.

Lubrication and Cooling Systems

The lubricating oil cooler mounting and oil filter cooler head systems rely on the expansion plug to maintain the engine block’s pressure, which in turn supports the efficient circulation of lubricants and coolants. This is essential for the thermal management and longevity of the engine.

Long and Short Block Assemblies

In both long block and short block configurations, including the short block kit and block 6-BT, the expansion plug is a key component in ensuring that the engine block’s pressure is regulated. This regulation is fundamental for the reliable operation of these comprehensive engine assemblies.

Water Manifold

Finally, in the water manifold system, the expansion plug helps in maintaining the pressure within the engine block, which is crucial for the effective circulation of coolant. This ensures that the engine remains at an optimal operating temperature, preventing overheating and potential damage.

Overall, the expansion plug (part 3007635) is a vital component across various engine systems, contributing to the stability, efficiency, and longevity of the engine.

Conclusion

The Cummins 3007635 Expansion Plug is a critical component in the maintenance and operation of commercial trucks. Its role in sealing the engine and cooling systems ensures the integrity and efficiency of the vehicle. By understanding its purpose, features, and benefits, as well as following proper installation and maintenance procedures, vehicle operators and technicians can ensure the optimal performance and longevity of their trucks.