Lmao....I exhausted all suggested methods and finally removed it as a unit with the water pump, then cut it off. Now, all methods work .
36 for 4.0 GEMS IIRC. 180k and it was frozen solid. As I stated, I tried every method...including your chisel. And I whacked that sucker without regard for the WP...Lmao.... You left out one other method! Using a chisel to turn the nut. Get the proper tool. punch it in amazon and its 40 or so. Same size nut as many BMWs so the tool is common and cheap. Less than 10 seconds and its off, you dont damage the water pump, your fingers, engine bay or the nut itself. When putting the fan cluch back on make sure tye threads are clean and apply a tiny bit of anti seize so it'll come off without any possible issues in the future.