5289874
Oil Seal
Cummins®

The Cummins 5289874 Oil Seal is a critical component designed to prevent oil leakage in commercial trucks. It plays a significant role in maintaining the integrity of the engine’s lubrication system, ensuring that oil remains within the engine components where it is needed most.

Basic Concepts of Oil Seals

An oil seal, also known as a rotary shaft seal, is a mechanical device used to prevent the leakage of lubricants from rotating equipment. It functions by creating a barrier between the rotating shaft and the stationary housing, maintaining the separation of the lubricant from the external environment. Oil seals are typically made from materials such as rubber, silicone, or fluorocarbon, chosen for their flexibility, resistance to oil, and durability under varying temperatures and pressures ¹.

Purpose of the Cummins 5289874 Oil Seal

The Cummins 5289874 Oil Seal is specifically engineered to fit within the truck’s engine system, where it maintains the seal around rotating shafts. This ensures that engine oil stays within the lubrication system, contributing to the engine’s overall performance and efficiency by preventing oil loss and contamination ².

Key Features

This Cummins part is characterized by its robust design and construction from high-quality materials. It features a durable rubber compound that offers excellent resistance to oil and temperature fluctuations. Its design ensures a snug fit around the shaft, enhancing its ability to prevent leaks effectively.

Benefits

Utilizing the Cummins 5289874 Oil Seal offers several advantages. It contributes to improved engine performance by ensuring consistent lubrication, increases the durability of the engine components by preventing oil contamination, and reduces maintenance requirements due to its reliable sealing capabilities ³.

Installation Process

Installing this part requires careful attention to detail. The process involves cleaning the shaft and housing surfaces, ensuring they are free from debris and oil. The seal should be seated correctly within the housing, using appropriate tools to avoid damage. Proper installation is key to ensuring the seal functions as intended.

Troubleshooting Common Issues

Common issues with oil seals include leaks and wear. These can often be traced back to incorrect installation, exposure to incompatible lubricants, or excessive shaft runout. Troubleshooting involves inspecting the seal and surrounding components for signs of damage or misalignment and addressing any identified issues promptly to restore the seal’s effectiveness.

Maintenance Tips

To ensure the longevity and optimal performance of the Cummins 5289874 Oil Seal, regular maintenance is recommended. This includes periodic inspections for signs of wear or damage, ensuring the seal remains properly seated, and replacing it as necessary to prevent oil leaks and maintain engine efficiency.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to excellence is evident in its wide range of components, including the Cummins 5289874 Oil Seal, designed to meet the demanding requirements of commercial vehicles.

Cummins Engine Oil Seal 5289874 Compatibility

The Cummins Oil Seal part number 5289874 is designed to fit a variety of Cummins engines, ensuring a secure seal to prevent oil leaks and maintain engine efficiency. Below is a detailed breakdown of the engines compatible with this oil seal:

B Series Engines

• B3.9 G
• B4.5
• B5.6 CM2670 B152B
• B5.9
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556

G Series Engines

• G5.9
• G5.9 CM558

ISB Series Engines

• ISB CM550
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB5.9G CM2180

QSB Series Engines

• QSB3.9 30 CM550
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB5.9 CM2880 B115
• QSB5.9G

This oil seal is engineered to provide a reliable seal in various operating conditions, ensuring the longevity and performance of the engine. It is crucial to verify the compatibility of this oil seal with the specific engine model to ensure proper fit and function.

Role of Part 5289874 Oil Seal in Engine Systems

The 5289874 Oil Seal is integral to maintaining the efficiency and reliability of various engine components. Its primary function is to prevent oil leakage and ensure that oil remains within the designated pathways, thus lubricating moving parts effectively.

In the Bosch Fuel Pump Kit, the oil seal helps in maintaining the integrity of the fuel pump’s lubrication system, ensuring smooth operation and longevity of the pump components.

When installed in the Cylinder Head, the oil seal plays a role in keeping oil from seeping into the combustion chamber, which could otherwise lead to contamination and inefficient engine performance.

In the Front Gear Cover and Gear Cover, the oil seal is essential for retaining oil within the gear housing. This ensures that the gears remain well-lubricated, reducing wear and tear and promoting efficient power transmission.

For the Full Engine Gasket Set and Lower Engine Gasket Kit, the oil seal complements these gaskets by providing an additional barrier against oil leakage, enhancing the overall sealing effectiveness of the engine.

In the context of the Long Block and Short Block, the oil seal is vital for maintaining oil pressure and ensuring that all rotating and moving parts within these assemblies are adequately lubricated.

The Timing Pin Housing also benefits from the oil seal, as it helps in keeping the timing mechanism well-lubricated, which is essential for precise engine timing and overall performance.

Overall, the 5289874 Oil Seal is a key component in various engine systems, contributing to the smooth operation, efficiency, and durability of the engine.

Conclusion

The Cummins 5289874 Oil Seal is a vital component in the maintenance and efficiency of commercial truck engines. Its role in preventing oil leakage ensures that engine components remain well-lubricated, contributing to overall engine performance and longevity. Proper installation, regular maintenance, and understanding its compatibility with various Cummins engines are essential for maximizing the benefits of this part.