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I exhausted all suggested methods and finally removed it as a unit with the water pump, then cut it off. Now, all methods work :).

You can borrow the 32/36 mm thin spanner from most auto parts stores if nearby...definitely try the method suggested above first.
 

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If its never been off it can be a real pain and smacking a wrench with a hammer may not get it. Ive used a free rental tool from Pep Boys to hold the viscous clutch while turning the nut.
Once you get it off slap some antiseize on there and the hammer smacking trick will work every time from there on out.
 

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I exhausted all suggested methods and finally removed it as a unit with the water pump, then cut it off. Now, all methods work :).
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.
 

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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.
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...
 

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is there a photo of these spanners? are we talking about just a big open end wrench or is this thing special in some way?

I plan on pulling my VC and fan tomorrow.
 
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