The pulley behind the fan clutch has stopped turning causing the belt to tear twice already. My mechanic told me to remove it but in order to do that I need to remove the fan (which I already did) and the fan clutch... I see no bolts or screws on it so I dont know how to remove it.

Check the pulley behind the fan clutch, remove the belts and check for a seized pulley, the fan should spin by hand with the pulley.

There may be a tool, or you jam a metal tool between two metal parts.
check these out:


Removing Stubborn Clutch fan Ranger Forums The Ultimate Ford Ranger...

Fan clutch removal

to remove clutch fan you need to remove upper fan shroud, you need large wrench to remove the fan clutch retaining nut to remove fan and clutch away from the engine drive belt should keep pulley from turning while loosen fan clutch retaining nut.if pulley belt turns while loosen fan clutch bolt remove drive belt use strap wrench hold pulley while you remove fan clutch bolt this procedure for checvrolet if you working on volkswagon you need spanner wrench hold the idler pulley while you use large wrench to loosen the large drive nut to fan clutch. you have to remove fan with clutch from engine then you can remove clutch from fan you can go to auto parts stores rent a spanner wrench try auto zone they rent out tools.

check to see that all bolts along the line of the belt are tightened, the biggest cause of torn belts are bolts that have worked their way loose and as the vehicle vibrates, they slide outward and rub on the belt, when the belt is removed, check each pulley for free play, they should all turn with ease, with the car running, have someone turn on the ac, make sure that the clutch engages and that its not binding, or causing the belt to bounce or skip when its on. check to see that the alignment of the belt fits PERFECTLY in line ,, if one pulley is off just a fraction of an inch it will begin to tear the belt, and at 3300 RPM's, that doesn't take long to rip to pieces.

The large pulley on the crankshaft (crank damper pulley) is
most likely worn & out of alignment,that is causing the belt
to rub on other pulleys & wear out

The howling & the idle, are most likely two separate issues

The AIC (air idle control valve) could need cleaning or replacement

The bearings in the fan clutch, or idler pulley may be going out, which would create extra resistance. This would cause the belt to squeal until everything is moving like it should. Try to lube the bearings, and put some belt stop squeal spray on the belt ridges. If this doesn't help, take the belt off and find which pulley is causing the extra resistance.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

This one does require a tool to loosen the fan clutch from the water pump shaft. Part of the tool holds the pulley and the other part is spanner wrench used to loosen the clutch. An important note on these fan clutches: Once you have the fan clutch off DO NOT let it lay with the rear side of the fan pointing downward as the silicone fluid that provides the "clutch" action can drain into the bearing and cause the clutch not to work. Once you have the clutch off just lean the fan and clutch against something so it is standing upright just as it is when it's bolted to the water pump until you are ready to put it back on. Hope this helps you out a bit!

Pretty easy for average mech. first drain coolant by loosening the lower radiator hose.
Make sure to have a drain pan. remove the power steering belt by removing the bolts to the idler pulley. and let belt off the pulley.remove the alternator upper bracket. and remove belt.
Take fan shroud off with two 8mm bolts on top oe it.
You cant remove untill you remove the clutch fan assembly.
It is left handed thread.
It has to be removed together.
Remove the four bolts to the pulley on front of water pump. and then remove all 14mm bolts around the pump.
Then remove 8mm bolts and it will be able to come off. assemble in reverse order!

Ok...the main nut that you arre tring to take off to seperate the two..It is reverse tread....so you have to go the opposite way to take it off. You may also need to go and buy this tool...

Now this one here is for a Ford, but the one you need should look similar...Remember it is a Reverse Tread, so be careful, and Goodluck

The text below is from the GM Service manual 4.3L V6 Engine
Water Pump Replacement (4.3L)
Removal Procedure
Drain the cooling system. Refer to Draining and Filling Cooling System .
Loosen the water pump pulley bolts.
Remove the cooling fan and clutch assembly.

Tools Required
J 46406 Fan Clutch Wrench

Removal Procedure
Remove the upper fan shroud.
Remove the fan clutch from the water pump in a counterclockwise direction using the J 46406 .
Remove the fan clutch assembly.
Remove the drive belt. Refer to Drive Belt Replacement Remove the water pump pulley mounting bolts.
Remove the water pump pulley.
Remove the radiator outlet hose clamp from the water pump.
Remove radiator outlet hose from the water pump.
Remove the water pump mounting bolts.
Remove the water pump from the engine.
Remove the water pump gaskets.
Clean the water pump gasket mating surfaces.
Installation Procedure
Install the water pump gaskets.
Install the water pump to the engine.
Apply a sealer (GM P/N 12346004) to the bolt threads.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the water pump mounting bolts.
Tighten
Tighten the mounting bolts to 41 N·m (30 lb ft).
Install the radiator outlet hose to the water pump.
Install the water pump pulley.
Install the water pump pulley bolts.
Tighten
Tighten the water pump pulley bolts to 25 N·m (18 lb ft).
Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.
Install the fan clutch assembly.
Fill the radiator cooling system. Refer to Draining and Filling Cooling System .
Inspect the cooling system for leaks.