4017622
Expansion Plug
Cummins®

Introduction

The Cummins 4017622 Expansion Plug is a critical component designed for use in commercial trucks. Its primary function is to seal openings in the engine block or other parts of the cooling system. This plug is essential for maintaining the integrity of the cooling system, ensuring that coolant remains contained and operates efficiently ².

Basic Concepts of Expansion Plugs

An expansion plug is a device used to seal openings in various systems, including automotive and industrial applications. It functions by expanding to fill the space it is inserted into, creating a tight seal that prevents leaks. These plugs are commonly used in engine blocks, radiators, and other components where sealing is necessary to maintain system performance and efficiency ¹.

Role of the 4017622 Expansion Plug in Truck Operation

The Cummins 4017622 Expansion Plug plays a specific role in the operation of a truck by sealing openings within the engine or cooling system. It is typically placed in core plugs or freeze plugs locations in the engine block. By providing a secure seal, it helps maintain the pressure and integrity of the cooling system, which is vital for efficient engine operation and preventing coolant loss ².

Key Features

The Cummins 4017622 Expansion Plug is characterized by several key features that enhance its performance and durability. It is made from high-quality materials that resist corrosion and wear, ensuring long-lasting use. The design of the plug allows it to expand and contract with temperature changes, maintaining a consistent seal. Additionally, it is engineered to withstand the high pressures and temperatures found within engine systems ².

Benefits

The use of the Cummins 4017622 Expansion Plug offers several benefits. It contributes to improved engine performance by ensuring the cooling system operates efficiently. The durable construction of the plug enhances the longevity of the cooling system components, reducing the need for frequent replacements. Fleet operators may experience cost savings due to the plug’s reliability and the reduction in maintenance requirements ².

Troubleshooting and Maintenance

Common issues with expansion plugs include leaks due to wear or improper installation. Regular maintenance checks are recommended to ensure the plugs are securely in place and functioning correctly. If a leak is detected, the plug may need to be replaced. Troubleshooting steps include inspecting the plug for signs of damage or corrosion, ensuring it is properly seated, and replacing it if necessary to restore the seal ².

About Cummins

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 has established a strong reputation in the commercial truck industry for producing reliable and high-performance components. Their product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial and industrial applications ².

Compatibility of Expansion Plug Part 4017622 with Cummins Engines

The Expansion Plug part 4017622, manufactured by Cummins, is designed to fit a variety of their 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 look at the engines with which this part is compatible.

ISX Series Engines

• ISX CM871
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

The ISX series engines, including the ISX CM871, ISX15 CM2250, ISX15 CM2250 SN, and ISX15 CM2350 X101, are high-performance engines known for their durability and efficiency. The Expansion Plug part 4017622 is specifically engineered to fit these models, ensuring optimal performance and longevity.

QSK Series Engines

• QSK45 CM500
• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60 G CM2358 K110
• QSK60G
• QSK95 CM2350 K111
• QSK95 CM2350 K113

The QSK series engines, such as the QSK45 CM500, QSK60 CM500, QSK60 CM850 MCRS, QSK60 G CM2358 K110, QSK60G, QSK95 CM2350 K111, and QSK95 CM2350 K113, are designed for heavy-duty applications. The Expansion Plug part 4017622 is compatible with these engines, providing a reliable seal that is essential for maintaining the cooling system’s efficiency.

QSX Series Engines

• QSX15 CM2250 ECF

The QSX15 CM2250 ECF engine is another model that benefits from the Expansion Plug part 4017622. This part is designed to fit seamlessly into the engine, ensuring that the cooling system operates without leaks or inefficiencies.

X15 Series Engines

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

The X15 series engines, including the X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B, are engineered for high-performance applications. The Expansion Plug part 4017622 is compatible with these engines, providing a critical seal that helps maintain the cooling system’s integrity.

Role of Part 4017622 Expansion Plug in Engine Systems

The 4017622 Expansion Plug is an essential component in various engine systems, ensuring the integrity and efficiency of several key elements.

In the accessory drive system, the expansion plug helps maintain the proper alignment and tension of the accessory drive shaft. This ensures that components such as the alternator, power steering pump, and air conditioning compressor operate smoothly and efficiently.

Within the thermostat housing, the expansion plug plays a role in sealing the housing, preventing coolant leaks, and ensuring that the thermostat functions correctly to regulate engine temperature.

In the cylinder block and associated components like the cylinder block hardware kit and cylinder block kit, the expansion plug is used to seal off unused passages or ports. This helps maintain the structural integrity of the block and prevents coolant or oil from leaking into areas where it shouldn’t be.

The expansion plug is also vital in the charge air cooler kit, where it ensures that the air intake system remains sealed, allowing for efficient cooling of the intake air without any leaks that could compromise engine performance.

In the crankshaft and bearings arrangement, the expansion plug is used to seal off any unnecessary passages, ensuring that the lubricants remain where they are needed most, thus protecting the crankshaft and bearings from wear and damage.

For the gear and shaft components, including the gear housing and gear shaft, the expansion plug ensures that these parts are properly sealed. This prevents any lubricant loss and maintains the efficiency of the gear operations.

In the hydraulic pump drive and hydraulic pump drive shaft, the expansion plug helps in maintaining the seal integrity, ensuring that the hydraulic system operates without leaks, thus preserving system pressure and efficiency.

The expansion plug is also employed in the lower block gasket set and service block kit to ensure that all passages are correctly sealed, contributing to the overall reliability and performance of the engine block.

Lastly, in components like the protective cover and various housings (front gear housing, thermostat housing), the expansion plug ensures that these covers and housings remain sealed, protecting internal components from contaminants and ensuring optimal engine operation.

Conclusion

The Cummins 4017622 Expansion Plug is a vital component in maintaining the efficiency and reliability of commercial truck engines. Its role in sealing various parts of the engine and cooling system ensures that the engine operates smoothly, efficiently, and with minimal maintenance requirements. The plug’s compatibility with a wide range of Cummins engines further underscores its importance in the industry.