Fan clutch

Welcome to 2CarPros.

The fan clutch should get easier to turn as the temperature lowers. So, when it's hot, it will be difficult and opposite.

Here are a few links that will help explain how it works, symptoms of a bad one, and how in general one is replaced:

https://www.2carpros.com/articles/how-a-clutch-fan-works

https://www.2carpros.com/articles/fan-clutch-symptoms

https://www.2carpros.com/articles/fan-clutch-removal

If you find it to be bad, here are the directions specific to your vehicle for replacement. The attached picture correlates with these directions.

FAN DRIVE VISCOUS CLUTCH

REMOVAL

picture 1

1. 4.0L Engine - The thermal viscous fan drive/fan blade assembly is attached (threaded) to water pump hub shaft. Remove fan blade/viscous fan drive assembly from water pump by turning mounting nut counterclockwise as viewed from front. Threads on viscous fan drive are RIGHT HAND. Using a suitable fan wrench loosen the fan drive.
2. Remove accessory drive belt.
3. Some models with certain engines may require the removal of the fan shroud to remove the viscous fan drive. The fan shroud and fan blade/viscous fan drive should be removed from the vehicle as one assembly.
4. After removing fan blade/viscous fan drive assembly, do not place thermal viscous fan drive in horizontal position. If stored horizontally, silicone fluid in viscous fan drive could drain into its bearing assembly and contaminate lubricant.

INSTALLATION
1. Assemble fan blade to viscous fan drive. Tighten mounting bolts to 27 Nm (20 ft. lbs.) torque.
2. 2.5L Engine - Position mounting flange of fan blade/viscous fan drive assembly onto hub. Install four nuts and tighten to 24 Nm (18 ft. lbs.) torque. Tighten the first two nuts 180 degrees apart. Then tighten last two nuts.
3. 4.0L Engine - Thread the fan and fan drive onto the water pump pulley.

CAUTION: When installing a serpentine accessory drive belt, the belt MUST be routed correctly. If not, the engine may overheat due to the water pump rotating in the wrong direction.

4. Install accessory drive belt.

If you have other questions or need help, let me know.

Take care,
Joe