the top bolt backed out, i have since changed the setup and added an additional nyloc to ensure it cant back out in the future.
The oil filter housing sits directly below the alternator, and everything has AN fittings and none had come out, just simply split , i dont use push lock fittings.
anyway car is alive, is lighter and makes more power than before
so let me get this right.. (assuming since you haven't suggested you run an aftermarket mounting system and commented on the top bolt points to a standard system..)
an alternator which is held on by 2 bolts and is tensioned by an integrated alternator tensioner system, somehow loosened the top bolt, tenstioner bolt came all the way out (which is about 30mm) and rotated around the bottom bolt (which would have to be loose also) and cut an an8 (at a guess, maybe an6) braided hose..
what you are suggesting is that Nut A came loose, the bolt for that nut which is recessed in the mount, C came out enough to give no tension on the belt and then B came loose also and somehow the alternator dropped 3£ and cut through a braided hose..
fcuking please lol..
show us pics of the damaged parts..