4967502
Fan Clutch
Cummins®

The Cummins 4967502 Fan Clutch is a component designed to enhance the cooling system of heavy-duty trucks. It is engineered to manage the fan speed in relation to engine temperature, thereby contributing to the overall efficiency and performance of the vehicle’s cooling system.

Basic Concepts of a Fan Clutch

A fan clutch is a device that connects the engine-driven fan to the vehicle’s cooling system. It operates by varying the fan speed in response to engine temperature, which helps in maintaining optimal engine operating temperatures. There are two primary types of fan clutches: mechanical and viscous. Mechanical fan clutches use a thermostatic spring to engage and disengage the fan, while viscous fan clutches utilize a silicone-based fluid that changes viscosity with temperature, allowing for a more gradual and precise control of fan speed ⁴.

Purpose of the 4967502 Fan Clutch

The Cummins 4967502 Fan Clutch is integral to the operation of a truck’s cooling system. It plays a role in managing engine temperature by adjusting the fan speed according to the load conditions and engine temperature. This helps in maintaining engine efficiency and preventing overheating, which can lead to engine damage ¹.

Key Features

The Cummins 4967502 Fan Clutch is characterized by its robust design and the use of high-quality materials. It incorporates advanced technological features that enhance its performance, such as a precision-machined sheave and a durable housing. These features contribute to its reliability and effectiveness in varying operating conditions ².

Benefits

Utilizing the Cummins 4967502 Fan Clutch offers several advantages. It contributes to improved fuel efficiency by reducing the parasitic load on the engine when cooling demands are low. Additionally, it helps in reducing wear on engine components by maintaining optimal operating temperatures, and it enhances overall engine performance by ensuring efficient cooling under all conditions ³.

Operational Mechanism

The Cummins 4967502 Fan Clutch operates through a sophisticated mechanism that involves the interaction of its components. It uses a viscous coupling filled with temperature-sensitive fluid to adjust the fan speed. As the engine temperature increases, the fluid’s viscosity changes, allowing the clutch to engage more fully and increase fan speed, thereby enhancing cooling efficiency ⁴.

Installation Process

Installing the Cummins 4967502 Fan Clutch requires careful attention to detail. The process involves removing the old fan clutch, cleaning the mounting surface, and then securing the new clutch in place. Proper tools and preparatory steps are necessary to ensure a secure and efficient installation.

Troubleshooting Common Issues

Common issues with fan clutches include overheating, unusual noises, or inefficient cooling. These problems can often be traced back to clutch wear, fluid degradation, or electrical issues in the case of electric fan clutches. Diagnostic steps may involve inspecting the clutch for signs of wear, checking the fluid level and condition, and testing electrical connections.

Maintenance Tips

Regular maintenance of the Cummins 4967502 Fan Clutch is key to ensuring its longevity and efficient operation. This includes periodic inspections for signs of wear or damage, cleaning the clutch to remove any debris, and ensuring that the mounting surface is free of contaminants. Adhering to manufacturer-recommended inspection intervals is also important.

Performance Under Different Conditions

The Cummins 4967502 Fan Clutch is designed to perform effectively under a wide range of driving conditions. Whether facing heavy loads, extreme temperatures, or varied terrains, it adjusts fan speed to maintain optimal engine temperature, demonstrating its versatility and reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a strong reputation for quality and reliability in the manufacturing of diesel engines and related components, Cummins provides context for the high standards and performance of the 4967502 Fan Clutch.

Fan Clutch Compatibility with Cummins Engines

The Fan Clutch part number 4967502, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This part is engineered to ensure optimal cooling efficiency and performance across various engine models.

K19 Engine Series

For the K19 engine series, the Fan Clutch part 4967502 is specifically tailored to fit seamlessly. This compatibility ensures that the fan clutch operates effectively, maintaining the engine’s temperature within safe limits and enhancing overall engine longevity.

Grouped Engine Compatibility

In addition to the K19 series, the Fan Clutch part 4967502 is also compatible with other Cummins engine groups where similar design and performance criteria are met. This part is engineered to provide a reliable fit across multiple engine types, ensuring that it meets the cooling requirements of each engine it is paired with.

Role of Part 4967502 Fan Clutch in Engine Systems

The 4967502 Fan Clutch is an essential component in the thermal management system of an engine, specifically designed to optimize the operation of the cooling fan. This component interfaces directly with the drive mechanism and the fan, ensuring efficient heat dissipation under varying engine loads and operating conditions.

Interaction with the Drive Mechanism

The fan clutch is mounted between the engine’s crankshaft and the cooling fan. Its primary function is to modulate the engagement of the fan with the drive mechanism. Under low engine loads or when the engine is cold, the fan clutch allows the fan to freewheel, reducing parasitic losses and improving fuel efficiency. As the engine temperature rises or under high load conditions, the fan clutch engages more firmly, increasing the fan’s rotational speed to enhance airflow through the radiator, thus maintaining optimal engine temperature.

Coordination with the Fan

The cooling fan, driven by the fan clutch, plays a pivotal role in dissipating heat from the radiator. The fan clutch’s ability to vary the fan’s speed based on engine requirements ensures that the fan operates at the most efficient speed for the current conditions. This dynamic adjustment prevents overheating while minimizing energy consumption, contributing to overall engine efficiency and performance.

Conclusion

In summary, the 4967502 Fan Clutch serves as a pivotal link between the drive mechanism and the fan, ensuring that the cooling system operates efficiently across a wide range of engine conditions. Its design, compatibility with various Cummins engines, and the benefits it offers in terms of fuel efficiency, engine protection, and performance make it a valuable component in the thermal management system of heavy-duty trucks.