I'm not positive but I think the movable part of the pulley just threads on the fan hub and moves in and out to change the pulley pitch diameter. Can't you just loosen the radiator mount bolts enough to tip it ahead and gain enough clearance for the belt. Just start at the top fan blade and rotate to thread the belt over the next blade and so on.
That large hex nut on the water pump shaft compresses some graphite impregnated packing and it is the shaft seal. Can't tell for sure but it looks like it may be about out threads. If that's the case it will soon start leaking coolant around it. There's a special wrench made for that so look for a pic of it. It might be possible to sacrifice a 12 point box end wrench by cutting just enough to slip over the shaft. It doesn't have to be super tight, just enough so it weeps a drop or 2 a minute as the coolant is the lube for the packing. Once you get the wrench made just try to tighten it a little bit. If it will you may be OK. If you can't tighten it all then it's new packing time and I'll recommend removing the water pump which might force you to remove the radiator anyway. I hope I'm not discouraging you, just trying to make sure you only have to do this once. One caution if you have to change the packing. The packing is one piece with a split in it to slip over the shaft. Of course you have to dig out the old which can be a real biotch!! I hope you can find a video of this being done. Probably better than all my typing!! Once installed run the nut down 'til it's just past finger tight fill with coolant, start the main engine and watch how much leaks past the packing and gently tighten the nut until it leaks a little bit.
That large hex nut on the water pump shaft compresses some graphite impregnated packing and it is the shaft seal. Can't tell for sure but it looks like it may be about out threads. If that's the case it will soon start leaking coolant around it. There's a special wrench made for that so look for a pic of it. It might be possible to sacrifice a 12 point box end wrench by cutting just enough to slip over the shaft. It doesn't have to be super tight, just enough so it weeps a drop or 2 a minute as the coolant is the lube for the packing. Once you get the wrench made just try to tighten it a little bit. If it will you may be OK. If you can't tighten it all then it's new packing time and I'll recommend removing the water pump which might force you to remove the radiator anyway. I hope I'm not discouraging you, just trying to make sure you only have to do this once. One caution if you have to change the packing. The packing is one piece with a split in it to slip over the shaft. Of course you have to dig out the old which can be a real biotch!! I hope you can find a video of this being done. Probably better than all my typing!! Once installed run the nut down 'til it's just past finger tight fill with coolant, start the main engine and watch how much leaks past the packing and gently tighten the nut until it leaks a little bit.
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