4988952
Oil Seal
Cummins®

The Cummins 4988952 Oil Seal is a component designed to prevent oil leakage in commercial trucks. It plays a role in maintaining the integrity of the engine’s lubrication system, ensuring that oil remains where it is needed most. This seal is integral to the operation of commercial trucks, contributing to their efficiency and reliability ¹.

Basic Concepts of Oil Seals

An oil seal, also known as a rotary shaft seal, is a mechanical device used to prevent lubricants from leaking out of a system while keeping contaminants out. It functions by creating a barrier between rotating and stationary parts. Oil seals come in various types, including lip seals, V-ring seals, and O-rings, each suited to different applications based on the specific requirements of the mechanical system ².

Purpose of the 4988952 Oil Seal

The Cummins 4988952 Oil Seal is specifically designed to fit into the engine systems of certain commercial trucks. It plays a role in the engine’s operation by ensuring that oil does not escape from the lubrication system, thereby maintaining optimal lubrication of moving parts. This contributes to the engine’s efficiency and reliability, reducing the risk of wear and tear on critical components ³.

Key Features

The Cummins 4988952 Oil Seal is constructed from durable materials that can withstand the high temperatures and pressures found within an engine. Its design includes a lip that contacts the rotating shaft, creating a seal that is both effective and durable. Unique characteristics of this seal enhance its performance, ensuring it can operate under demanding conditions.

Benefits

Using the Cummins 4988952 Oil Seal offers several advantages. It contributes to improved engine performance by ensuring consistent lubrication. Additionally, it reduces maintenance needs by minimizing the risk of oil leaks, which can lead to engine damage. The seal also supports the increased longevity of truck components by maintaining the integrity of the lubrication system.

Installation Process

Proper installation of the Cummins 4988952 Oil Seal is crucial for its effective performance. The process involves using the necessary tools to ensure the seal is correctly positioned and secured. Preparation steps include cleaning the installation area to remove any debris that could compromise the seal. Best practices for installation include checking the seal for damage before use and ensuring it is properly aligned with the shaft.

Troubleshooting Common Issues

Common problems associated with oil seals include leaks and wear. These issues can often be identified through visual inspection or by monitoring the engine’s performance. Troubleshooting steps may involve checking the seal for signs of damage or misalignment. Guidance on when to replace the seal includes observing any changes in engine performance or noticing oil leaks around the seal area.

Maintenance Tips

To ensure the long-term performance of the Cummins 4988952 Oil Seal, regular inspections are recommended. Cleaning procedures should be followed to remove any contaminants that could affect the seal’s effectiveness. Conditions that may require early replacement include exposure to extreme temperatures or pressures beyond the seal’s designed tolerances.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a reputation in the commercial truck industry for producing reliable and efficient components. The company’s commitment to quality and innovation is evident in its manufacturing processes and the performance of its products.

Compatibility with Cummins Engines

The Cummins part number 4988952, an Oil Seal, is designed to fit a variety of Cummins engine models. This oil seal is engineered to provide a reliable barrier against oil leaks, ensuring the engine’s lubrication system remains intact and efficient.

For the 4B3.9, 6B5.9, B5.6 CM2670 B152B, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B, B6.7 CM2670 B153B, ISB5.9 CM2880 B110, ISB5.9 CM2880 B140, ISB5.9 CM2880 B149, ISB5.9G CM2180, ISBE CM2150, ISBE4 CM850, QSB5.9 CM2880 B115, QSB5.9G, and QSB6.7 CM850(CM2850) engines, the oil seal is a critical component that helps maintain the integrity of the engine’s oil system.

Grouping these engines by their common features, the oil seal is compatible with the following engine series:

• ISB5.9 CM2880 Series: ISB5.9 CM2880 B110, ISB5.9 CM2880 B140, ISB5.9 CM2880 B149, ISB5.9G CM2180
• QSB5.9 Series: QSB5.9 CM2880 B115, QSB5.9G
• QSB6.7 Series: QSB6.7 CM850(CM2850)
• ISBE Series: ISBE CM2150, ISBE4 CM850
• Others: 4B3.9, 6B5.9, B5.6 CM2670 B152B, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B, B6.7 CM2670 B153B

Each of these engines, despite their differences, relies on the 4988952 oil seal to prevent oil from leaking out, which is essential for maintaining engine performance and longevity.

Role of Part 4988952 Oil Seal in Engine Systems

The Part 4988952 Oil Seal is a component in maintaining the integrity and efficiency of various engine systems. Its primary function is to prevent oil leakage between moving and stationary parts within the engine.

In the context of a Complete Engine Gasket Kit, the oil seal works in conjunction with gaskets to ensure that oil is contained within its designated pathways, thus maintaining proper lubrication and preventing contamination of other engine components.

When installed in the Flywheel Housing, the oil seal helps to keep the lubricant within the housing, ensuring that the flywheel operates smoothly without excess friction or wear.

In a Full Engine Gasket Set, the oil seal complements the gaskets by providing an additional barrier against oil seepage, which is vital for the longevity and performance of the engine.

Within a Gasket Kit, the oil seal is often paired with other sealing components to create a comprehensive sealing solution that safeguards the engine’s internal environment.

The Housing of various engine components, such as the flywheel, relies on the oil seal to maintain a consistent oil film, which is essential for reducing wear and tear on moving parts.

In the Flywheel system, the oil seal ensures that the lubricant remains within the housing, supporting the flywheel’s rotational movement and minimizing friction.

The Lower Engine Gasket Kit and Lower Engine Gasket Set both benefit from the inclusion of the oil seal, as it helps to maintain oil pressure and prevent leaks that could lead to engine damage.

The Rear Cover of the engine is another area where the oil seal plays a significant role. By preventing oil from escaping, it ensures that the rear cover remains clean and free from lubricant buildup, which could otherwise lead to inefficiencies.

Lastly, in a Seal Kit, the Part 4988952 Oil Seal is a key component that, when combined with other seals, provides a robust solution for maintaining the engine’s lubrication system integrity.

Conclusion

The Cummins 4988952 Oil Seal is a vital component in the maintenance and efficiency of commercial truck engines. Its role in preventing oil leakage ensures that engines operate smoothly, efficiently, and with reduced maintenance needs. Proper installation, regular maintenance, and timely replacement are key to maximizing the benefits of this Cummins part.