4947073
Oil Seal
Cummins®

The Cummins 4947073 Oil Seal is a component designed to prevent oil leakage in commercial trucks. Its role is significant in maintaining the operational integrity of the truck’s engine and other mechanical systems. By ensuring that oil remains within the designated pathways, this seal contributes to the overall efficiency and reliability of the vehicle ¹.

Basic Concepts of Oil Seals

An oil seal, also known as a rotary shaft seal, is a mechanical device used to prevent leakage of lubricants where a shaft passes through a housing. It functions by creating a barrier that allows the shaft to rotate while maintaining a seal against the lubricant. Oil seals are typically made from materials such as rubber, silicone, polyurethane, and PTFE (polytetrafluoroethylene), each offering different properties like flexibility, resistance to chemicals, and temperature tolerance. The choice of material depends on the specific application and the environmental conditions the seal will encounter ².

Purpose of the 4947073 Oil Seal

This Cummins part plays a role in the operation of a truck by ensuring that oil does not escape from the engine or other mechanical components where shafts pass through housings. This seal helps maintain the proper lubrication of moving parts, which is vital for reducing friction and wear. By keeping oil contained, it also prevents contamination of the surrounding areas, which can lead to further mechanical issues ³.

Key Features

The Cummins 4947073 Oil Seal is characterized by its robust design and the quality of its construction materials. It is typically made from durable rubber compounds that offer excellent resistance to oil and other chemicals. The seal features a spring-energized design that provides consistent pressure against the shaft, ensuring a reliable seal even under varying operational conditions. Additionally, its unique characteristics, such as anti-extrusion rings, enhance its performance and longevity.

Benefits

Utilizing the 4947073 Oil Seal in commercial trucks offers several advantages. It contributes to improved engine performance by ensuring that lubrication is maintained efficiently. This results in reduced friction and wear on mechanical components, leading to lower maintenance needs. Furthermore, the seal’s durability and resistance to harsh conditions increase the longevity of the truck’s engine and other parts, providing a reliable and cost-effective solution for fleet operators.

Installation Process

Installing the 4947073 Oil Seal requires careful attention to detail to ensure optimal performance. The process involves cleaning the shaft and housing to remove any debris or old seal remnants. Using appropriate tools, the new seal is then placed into the housing, ensuring it is seated correctly and evenly. It is important to follow manufacturer guidelines for torque specifications when securing any components that hold the seal in place. Proper installation is key to the seal’s effectiveness and longevity.

Troubleshooting Common Issues

Common problems with oil seals include leaks, which can be caused by wear, improper installation, or damage to the seal. To address these issues, it is important to diagnose the cause accurately. This may involve inspecting the seal for signs of wear or damage, checking the shaft and housing for irregularities, and ensuring that the seal was installed correctly. In cases where the seal has failed, replacement with a new, correctly sized seal is necessary to restore the system’s integrity.

Maintenance Tips

To ensure the longevity and optimal performance of the 4947073 Oil Seal, regular maintenance is recommended. This includes inspecting the seal for signs of wear or damage during routine maintenance checks. Keeping the shaft and housing clean and free of debris can prevent premature seal failure. Additionally, following the manufacturer’s guidelines for replacement intervals can help maintain the seal’s effectiveness and contribute to the overall reliability of the truck’s engine and mechanical systems.

Cummins Corporation

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. With a strong reputation in the commercial truck industry, Cummins is known for its commitment to quality and innovation. The company’s extensive product range and focus on customer satisfaction have established it as a trusted name in the manufacturing of automotive components, including the 4947073 Oil Seal.

Cummins Engine Oil Seal Part 4947073 Compatibility

The Cummins Oil Seal part number 4947073 is designed to fit a variety of Cummins engines, ensuring a reliable seal to prevent oil leaks. This oil seal is engineered to provide optimal performance and durability across different engine models. Below is a detailed description of the engines with which this oil seal is compatible.

Compatible Engines

• B4.5 CM2350 B129B
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB4.5 CM2350 B104
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123
• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

Grouping of Compatible Engines

The Cummins Oil Seal part number 4947073 is versatile and fits into several categories of engines:

• F Series Engines

  • F3.8 CM2350 F120B
  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F3.8 F102
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C

• ISF Series Engines

  • ISF3.8 CM2220 AN
  • ISF3.8 CM2220 F103
  • ISF3.8 CM2350 F109
  • ISF4.5 CM2220 F123

• QSF Series Engines

  • QSF3.8 CM2350 F107
  • QSF3.8 CM2880 F112

• ISB Series Engines

  • ISB4.5 CM2350 B104

• Other Series Engines

  • B4.5 CM2350 B129B
  • D4.0 CM2620 D103B

This oil seal is a critical component in maintaining the integrity of the engine’s lubrication system, ensuring that oil remains within the engine and does not leak out. It is essential to use the correct oil seal for each engine model to ensure proper fit and function.

Role of Part 4947073 Oil Seal in Engine Systems

The 4947073 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 moving parts within the engine.

Integration with Lower Engine Gasket Kit

When integrated with a lower engine gasket kit, the 4947073 Oil Seal ensures that the gaskets perform optimally by maintaining a consistent oil film. This is particularly important in areas where gaskets interface with rotating components, such as crankshafts or camshafts. The oil seal helps in retaining the lubricating oil within the engine, thereby reducing the risk of gasket failure due to oil starvation.

Function in Lubricating Oil Pump Systems

In lubricating oil pump systems, the 4947073 Oil Seal plays a significant role in maintaining the efficiency of the pump. It is often positioned at the interface between the pump rotor and the pump housing. By effectively sealing this interface, the oil seal ensures that the pump can maintain the required pressure and flow rate of lubricating oil throughout the engine. This consistent oil flow is vital for the proper lubrication of engine bearings, pistons, and other moving parts.

Role in General Pump Applications

Beyond specific engine components, the 4947073 Oil Seal is also utilized in general pump applications within the engine system. Whether it’s a fuel pump or any other type of pump used in the engine, the oil seal ensures that the pump operates efficiently without oil leakage. This is essential for maintaining the pump’s longevity and ensuring it delivers the necessary performance for the engine’s operation.

Importance in Lubricating Oil Systems

In lubricating oil systems, the 4947073 Oil Seal is instrumental in preserving the quality and quantity of the lubricating oil. By preventing oil leaks, it ensures that the oil remains clean and free from contaminants that could otherwise degrade its lubricating properties. This is particularly important in high-performance engines where the quality of lubrication directly impacts engine efficiency and durability.

Conclusion

Overall, the 4947073 Oil Seal is a fundamental component in various engine systems, contributing to the smooth operation, efficiency, and longevity of the engine by ensuring effective oil management and leakage prevention.