4935821
Alternator
Cummins®

The Cummins 4935821 Flywheel Housing is a component designed for use in heavy-duty trucks. It plays a role in the operation of these vehicles by providing a secure and stable mounting point for the flywheel, which is a part of the truck’s powertrain system. This housing ensures the efficient transfer of power from the engine to the transmission, contributing to the overall performance and reliability of the truck.

Basic Concepts of Flywheel Housing

A flywheel housing is a structural component that encases the flywheel, a heavy rotating disc that stores rotational energy and smooths out the delivery of power from a motor to its load. The primary functions of a flywheel housing include protecting the flywheel from external elements, providing a mounting surface for the clutch assembly, and ensuring the alignment of the flywheel with the engine and transmission. It integrates with other components in a truck’s powertrain by connecting the engine to the transmission through the clutch, allowing for the smooth engagement and disengagement of power ¹.

Purpose of the 4935821 Flywheel Housing

This part plays a role in the operation of a truck by securely mounting the flywheel and facilitating its interaction with the clutch and transmission. This housing ensures that the flywheel is properly aligned and supported, which is vital for the efficient transfer of power from the engine to the transmission. It also helps in reducing vibrations and noise, contributing to a smoother operation of the truck.

Key Features

The 4935821 Flywheel Housing is characterized by its robust material composition, typically made from high-strength cast iron or steel, which provides durability and resistance to wear and tear ². Its design includes precise machining for accurate fitment and alignment, as well as features that enhance cooling and reduce the risk of overheating. Additionally, the housing may incorporate design elements that minimize noise and vibration, contributing to a more comfortable and efficient operation.

Benefits

This Cummins part offers several benefits, including improved engine performance through efficient power transfer, enhanced durability due to its robust construction, and reliable operation under heavy-duty conditions. Its design contributes to reduced maintenance needs and longer service life, making it a valuable component for heavy-duty truck applications.

Installation Process

Installing the 4935821 Flywheel Housing involves several steps to ensure proper fitment and function. It begins with preparing the engine and transmission for the housing’s installation, followed by aligning the housing with the flywheel and securing it in place. Careful attention must be paid to torque specifications and alignment to ensure optimal performance and longevity. Best practices include thorough cleaning of mating surfaces and the use of appropriate gaskets and seals to prevent leaks ³.

Common Issues and Troubleshooting

Common issues associated with the 4935821 Flywheel Housing may include leaks, cracks, or misalignment. Troubleshooting these issues involves inspecting the housing for signs of damage or wear, checking alignment with the flywheel and transmission, and ensuring that all fasteners are properly torqued. Solutions may range from simple repairs, such as replacing gaskets or seals, to more complex interventions like realignment or replacement of the housing.

Maintenance Tips

To prolong the lifespan of the 4935821 Flywheel Housing, regular inspections are recommended to check for signs of wear, damage, or misalignment. Cleaning the housing and its surrounding components can prevent the buildup of dirt and debris, which may contribute to wear. Addressing any issues promptly, such as leaks or cracks, is crucial to maintaining the housing’s integrity and performance.

Compatibility and Applications

The 4935821 Flywheel Housing is designed for compatibility with specific Cummins engines, ensuring a precise fit and optimal performance. Its applications span various types of heavy-duty trucks, where it plays a vital role in the powertrain system. Understanding its compatibility with different engine models and truck types is important for ensuring proper function and longevity.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the industry for quality and innovation, Cummins is committed to producing high-quality automotive components that meet the demanding requirements of heavy-duty applications. The company’s history of excellence and dedication to customer satisfaction underscores its position as a trusted provider of engine components and systems.

Flywheel Housing (Part 4935821) Compatibility with Cummins Engines

The Flywheel Housing (Part 4935821) is a critical component in Cummins engines, providing a mounting point for the flywheel and helping to contain the engine’s internal components. This part is designed to fit a variety of Cummins engines, ensuring compatibility across different models and configurations.

B6.7 Series Engines

The Flywheel Housing (Part 4935821) is compatible with the following B6.7 series engines:

• B6.7 CM2350 B135B
• B6.7 G CMOH6.0 B125

These engines are known for their robust performance and reliability, often used in heavy-duty applications.

ISB/ISD Series Engines

The Flywheel Housing (Part 4935821) is also compatible with several ISB/ISD series engines:

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN

These engines are designed for versatility, offering a balance of power and efficiency suitable for various applications.

ISBE Series Engines

The Flywheel Housing (Part 4935821) fits the following ISBE series engines:

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

These engines are engineered for high performance and reliability, often used in demanding environments.

QSB Series Engines

The Flywheel Housing (Part 4935821) is compatible with the following QSB series engines:

• QSB4.5 CM850 (CM2850)
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

These engines are known for their durability and efficiency, making them suitable for a wide range of applications.

ISD4.5 Series Engine

The Flywheel Housing (Part 4935821) is also compatible with the following ISD4.5 series engine:

• ISD4.5 CM2220 D108

This engine is designed for high performance and reliability, often used in heavy-duty applications.

By ensuring compatibility with these various engines, the Flywheel Housing (Part 4935821) provides a reliable and efficient solution for maintaining and repairing Cummins engines across different models and configurations.

Role of Part 4935821 Flywheel Housing in Engine Systems

The 4935821 Flywheel Housing is an integral component in the assembly and operation of various engine systems. Its primary function is to encase and support the flywheel, which is a key element in the engine’s power transmission system.

When integrated with the Alternator, the Flywheel Housing ensures a stable and secure mounting point. This is essential as the alternator relies on consistent rotational input from the engine to generate electrical power. The housing’s robust design helps maintain the precise alignment needed between the flywheel and the alternator pulley, ensuring efficient power generation and minimal mechanical wear.

Additionally, the Flywheel Housing interacts with the Clutch Assembly. It provides a solid foundation for the clutch disc and pressure plate, facilitating smooth engagement and disengagement of the clutch. This interaction is vital for the transmission of engine power to the drivetrain, allowing for seamless gear changes and optimal vehicle performance.

In summary, the 4935821 Flywheel Housing plays a significant role in maintaining the structural integrity and functional efficiency of the engine system, particularly in its interactions with the alternator and clutch assembly.

Conclusion

The 4935821 Flywheel Housing is a critical component in the powertrain system of heavy-duty trucks, ensuring efficient power transfer, durability, and reliable operation. Its robust design, precise machining, and compatibility with various Cummins engines make it a valuable asset for maintaining and repairing heavy-duty vehicles. Regular maintenance and proper installation are key to maximizing the lifespan and performance of this part.