get a strip of metal 3 or 4mm thick 400mm long 40 to 50mm wide, drill a 12++ mm hole at one corner to fit a pulley nut, and grind a concave from the edge where the hole is back 30mm to allow for the 32mm nut to clear.
this makes it a lot easier to break the nut loose.
Remember it's righty loosey for the 32mm fan nut