5262664
Fan Pulley
Cummins®

Introduction

The Cummins 5262664 Fan Pulley is a component designed for use in heavy-duty trucks. It plays a role in the engine cooling system by ensuring that the engine operates within optimal temperature ranges under various driving conditions. This pulley is integral to the efficient functioning of the truck’s cooling system, contributing to the overall performance and longevity of the engine.

Basic Concepts of a Fan Pulley

A fan pulley is a mechanical device that connects the engine to the cooling fan. It operates by transferring rotational force from the engine to the fan, which in turn moves air through the radiator to cool the engine. The fan pulley works in conjunction with the fan clutch and radiator to maintain the engine’s temperature. The efficiency of this system is important for the engine’s performance and durability ².

Purpose of the 5262664 Fan Pulley

The Cummins 5262664 Fan Pulley is designed to facilitate the transfer of power from the engine to the cooling fan. By doing so, it ensures that the fan operates at the correct speed to provide adequate cooling. This pulley maintains a balance between engine load and cooling requirements, which is vital for the engine’s operational efficiency and longevity ⁵.

Key Features

The Cummins 5262664 Fan Pulley is characterized by its robust design and the use of high-quality materials. These features contribute to its durability and performance. The pulley is engineered to withstand the demanding conditions of heavy-duty truck operations, ensuring reliable performance over time. Its design also includes features that enhance its efficiency and compatibility with various engine configurations ³.

Benefits

Utilizing the Cummins 5262664 Fan Pulley offers several advantages. It contributes to improved engine cooling efficiency, which is important for maintaining optimal engine temperature. This, in turn, reduces wear on engine components and enhances the overall performance of the truck. The pulley’s design and materials also contribute to its longevity, providing a reliable solution for heavy-duty truck cooling systems ¹.

Installation and Compatibility

Proper installation of the Cummins 5262664 Fan Pulley is important for its effective operation. It is designed to be compatible with specific Cummins engines, ensuring a precise fit and optimal performance. When installing this pulley, it is important to follow manufacturer guidelines to ensure it is securely and correctly positioned. This includes checking for any specific requirements or considerations for different truck models to ensure compatibility and efficient operation ⁴.

Troubleshooting and Maintenance

Common issues with fan pulleys, such as noise, vibration, or decreased cooling efficiency, can often be traced back to installation errors, wear, or damage. Regular inspection and maintenance of the pulley and associated components can help identify and address these issues early. Maintenance tips include checking for signs of wear or damage, ensuring proper alignment, and following manufacturer recommendations for servicing intervals. This proactive approach helps maintain optimal performance and extends the component’s lifespan ².

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 automotive industry. The company’s commitment to quality and innovation is evident in its wide range of products, including the Cummins 5262664 Fan Pulley. Cummins’ focus on engineering excellence and customer satisfaction underscores its position as a trusted provider of automotive components ³.

Compatibility with Cummins Engines

The Fan Pulley part number 5262664, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is important for the proper functioning of the engine’s cooling system, ensuring that the fan operates efficiently to maintain optimal engine temperature.

Compatibility with Specific Engine Models

• 6C8.3: The Fan Pulley part 5262664 is compatible with the 6C8.3 engine, ensuring that the fan is securely attached and operates smoothly.
• L8.9 CM2670 L134C: This part fits the L8.9 CM2670 L134C engine, providing a reliable connection between the fan and the engine’s drive system.
• QSB6.7 CM2250: The Fan Pulley part 5262664 is also suitable for the QSB6.7 CM2250 engine, ensuring efficient fan operation.
• QSB6.7 CM2350 B105: This part is compatible with the QSB6.7 CM2350 B105 engine, maintaining the integrity of the fan’s attachment.
• QSC8.3 CM850 (CM2850): The Fan Pulley part 5262664 fits the QSC8.3 CM850 (CM2850) engine, ensuring that the fan operates correctly.
• QSL8.9 CM2150 L141: This part is designed to fit the QSL8.9 CM2150 L141 engine, providing a secure and efficient fan attachment.
• QSL9 CM850 (CM2850): The Fan Pulley part 5262664 is compatible with the QSL9 CM850 (CM2850) engine, ensuring the fan operates smoothly.
• QSL9.3 CM2880 L113: This part fits the QSL9.3 CM2880 L113 engine, maintaining the fan’s operational efficiency.

Grouping of Compatible Engines

The Fan Pulley part 5262664 is versatile and can be used across several engine models, including the QSB6.7 series (QSB6.7 CM2250 and QSB6.7 CM2350 B105) and the QSL series (QSL8.9 CM2150 L141, QSL9 CM850 (CM2850), and QSL9.3 CM2880 L113). This compatibility allows for easier maintenance and replacement across multiple engine types, simplifying the process for technicians and operators ⁴.

Role of Part 5262664 Fan Pulley in Engine Systems

In engine systems, the part 5262664 Fan Pulley is an integral component that facilitates the efficient operation of both the drive and fan components.

When the engine is running, the drive component, typically connected to the crankshaft via a belt or chain, transmits rotational force to the fan pulley. This rotational force is then transferred to the fan, which is mounted on the same shaft as the pulley.

The fan, in turn, begins to rotate, drawing air through the radiator to cool the engine. The fan pulley ensures that the fan operates at the correct speed relative to the engine’s RPM, optimizing cooling efficiency while minimizing drag on the engine.

This setup allows for a balanced operation where the engine maintains optimal temperature, ensuring longevity and performance. The interplay between the drive, fan pulley, and fan is seamless, highlighting the importance of each component in maintaining engine health ⁵.

Conclusion

The Cummins 5262664 Fan Pulley is a critical component in the engine cooling system of heavy-duty trucks. Its robust design, compatibility with various Cummins engines, and role in maintaining optimal engine temperature make it an essential part for ensuring the longevity and performance of the engine. Proper installation, regular maintenance, and understanding its compatibility with specific engine models are key to maximizing the benefits of this component.