Originally Posted by AJ1500
you are going to need a large adj or a whench that fits tight on the clutch fan nut
remember the nut is reverse threaded, I'm sure they make a proper half moon wrench with 2 pins to fit into the holes in the pully, however you can put 2 bolts in the holes and using a long bar to keep the pully from turning. you have to hit the wrench pretty hard with a hammer to get the clutch loose so make sure your bar doesn't bounce or it can damage your pully. once the clutch is off remove your belt and the pully and your at the WP. you don't have to hit the clutch as hard when you put it back as engine torque will tighten it more
I hope this helps
My truck didn't have the luxury of the pulley holes, so I just winged it with a big adjustable wrench and a short piece of pipe I put over the wrench handle to strike against. Took two attempts with a 24 oz ball pein but I got it. I left the fan belt on to provide some grip.