3048625
Oil Seal
Cummins®

The Cummins 3048625 Oil Seal is a critical component designed to maintain the integrity of the lubrication system in commercial trucks. Its primary function is to prevent oil leakage from the engine or transmission, ensuring that the lubricant remains within the system to reduce friction and wear on moving parts. The significance of this oil seal lies in its contribution to the efficient and reliable operation of the vehicle.

Basic Concepts of Oil Seals

Oil seals, also known as rotary shaft seals, are devices used in machinery to prevent the leakage of lubricants while allowing a rotating shaft to pass through a housing. They operate by creating a barrier between the lubricated internal components and the external environment. Typically made from materials like rubber or synthetic compounds, oil seals are designed to withstand the pressures and temperatures associated with their specific applications ³.

Purpose of the Cummins 3048625 Oil Seal

The Cummins 3048625 Oil Seal is specifically engineered to fit within the engine or transmission system of a truck. It is positioned around rotating shafts to contain oil within the system, preventing it from escaping and ensuring that all moving parts receive the necessary lubrication. This seal plays a role in maintaining the performance and longevity of the engine or transmission by keeping contaminants out and lubricants in ⁴.

Key Features

The Cummins 3048625 Oil Seal is characterized by its robust material composition, which typically includes elastomers and reinforcing materials to enhance durability. Its design incorporates precision-engineered lips that create a tight seal against the rotating shaft. Additionally, the seal may feature anti-rotation devices to prevent it from twisting during operation, which could lead to failure ¹.

Benefits of Using the Cummins 3048625 Oil Seal

Utilizing the Cummins 3048625 Oil Seal offers several advantages. It contributes to the overall efficiency of the truck by ensuring that the lubrication system operates as intended. The seal’s design promotes longevity by withstanding the harsh conditions within the engine or transmission. Moreover, its reliable performance helps in preventing oil leaks, which can lead to engine damage and increased maintenance costs ².

Installation Considerations

Proper installation of the Cummins 3048625 Oil Seal is vital for its performance and longevity. It should be installed with the correct orientation and without damage to the seal lips. The mating surfaces must be clean and free of burrs to ensure a proper seal. Following manufacturer guidelines during installation will help in achieving optimal performance ³.

Troubleshooting Common Issues

Common issues with oil seals include leaks, which can be caused by wear, improper installation, or damage. Diagnosing these issues involves inspecting the seal for signs of wear or damage and checking the mating surfaces for cleanliness and proper condition. Recommended solutions may include replacing the seal or addressing any underlying issues that may have caused the failure ⁴.

Maintenance Tips

Routine maintenance of the Cummins 3048625 Oil Seal involves regular inspections for signs of wear or damage. It is important to follow the manufacturer’s recommended inspection intervals. Additionally, maintaining clean and properly lubricated mating surfaces will help prolong the life of the seal ¹.

Cummins Corporation Overview

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 reputation for quality and innovation in the commercial truck industry. The company’s product range includes a variety of engines, components, and aftermarket parts, all designed to meet the demanding requirements of commercial vehicles ².

Cummins Oil Seal 3048625 Compatibility with Engine Models

The Cummins Oil Seal part number 3048625 is designed to fit a variety of Cummins engine models. Below is a detailed breakdown of the engines with which this oil seal is compatible:

K38 Series Engines

• K38
• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS

K50 Series Engines

• K50
• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108

QSK45 Series Engines

• QSK45 CM500

QSK60 Series Engines

• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60G

QSK78 Series Engines

• QSK78 CM500

QST30 Series Engines

• QST30 CM2350 T101
• QST30 CM552

This oil seal is engineered to provide a reliable seal in various engine configurations, ensuring that oil remains within the engine system and preventing leaks. It is crucial to verify the compatibility of this oil seal with the specific engine model to ensure proper fit and function ².

Role of Part 3048625 Oil Seal in Engine Systems

The 3048625 Oil Seal is an essential component in maintaining the integrity and efficiency of various engine systems. Its primary function is to prevent oil leakage while allowing smooth operation of rotating or reciprocating parts. Here’s how it integrates with specific components:

Drive System

In the drive system, the 3048625 Oil Seal ensures that the lubricant remains within the designated areas, reducing friction and wear on the drive components. This is particularly important in systems where the drive shaft rotates at high speeds, as consistent lubrication is key to prolonging the lifespan of the drive mechanism ³.

Fan and Fan Drive Arrangement

For the fan and its drive arrangement, the oil seal plays a significant role in maintaining the efficiency of the cooling system. By preventing oil from escaping, it ensures that the fan drive components remain well-lubricated, which is vital for smooth operation and preventing overheating of the engine ⁴.

Fan Hub

At the fan hub, the 3048625 Oil Seal helps in maintaining the balance between lubrication and operational efficiency. It ensures that the fan hub operates without unnecessary friction, which could otherwise lead to increased wear and potential failure of the cooling system ¹.

Idler Assembly Pulley and Idler Pulley

In the idler assembly pulley and idler pulley systems, the oil seal is responsible for keeping the lubrication in check. This is essential for the tensioning mechanisms that rely on smooth rotation to function correctly. Proper lubrication facilitated by the oil seal ensures that these pulleys operate efficiently without undue stress or wear ².

Module

Within the module, the 3048625 Oil Seal contributes to the overall reliability of the engine system. By ensuring that moving parts within the module are properly lubricated, it helps in reducing noise, vibration, and harshness (NVH), leading to a more stable and efficient engine performance ³.

Engine Control

Although the engine control system itself does not directly interact with the oil seal, the seal’s role in maintaining the health of other engine components indirectly supports the engine control system. Healthy, well-lubricated components lead to more accurate readings and better overall engine management by the control system ⁴.

Conclusion

In summary, the Cummins 3048625 Oil Seal is a fundamental component in various engine systems, ensuring that lubrication is maintained where needed, thereby supporting the smooth and efficient operation of the engine. Proper installation, maintenance, and understanding of its role in the engine system are crucial for maximizing its effectiveness and longevity.