Here are directions for removing the fan clutch:
The fan is threaded onto the water pump shaft with a 36mm nut. To loosen the nut, the pump must be prevented from turning. This can be accomplished with a special tool or with a prybar.
Fan and fan shroud are removed together.
NOTE Gasoline engine fans have a standard RIGHT-HAND thread. Turn CCW to loosen.
WARNING Store the fan in the vertical (operating) position. If placed on its side, the silicone fluid in the viscous drive could drain into the bearing assembly and contaminate the lubricant.
Fig. Typical engine fan assembly
Fig. Remove the windshield washer bottle from the fan shroud
Fig. Loosening the fan nut
Fig. To loosen the fan nut, stop the pump shaft from turning. This tool will do it; you could also use a prybar. In this photo, the fan has been removed for clarity
Fig. Removing fan and shroud together