It certainly sounds like the tensioner, et al, is in closer proximity to the fan clutch than the 104...

...but as already noted, it will make easier. Especially on the 104, once you get the water pump pulley off it is very easy to get the pin through the hole of the back of the fan clutch pulley in order to seize it so that one can torque it on/off (this doesn't apply to the 103 as yo uneed the wrench DG describes).

On a side note...for you 104 people...if you replace the fan pulley bracket (that piece that mounts to the block, which the fan pulley and clutch bolt on to with an aftermarket Febi piece...the hole needed to stop the pulley from turning will not match up exactly and the MB tool cannot be used because the ID/OD tolerance is too tight. What works best is a small dogleg allen tool, the ones you buy in ppacks with all different sizes.

I digres...