Alternator

[j77hrn]

Hi just looking for some help... I changed my alternator cause it was squealing for one out my old hdi which when I last had running it was fine. However I think from lying around it's maybe not so fine, it's rattling and my battery light stayed on and now it won't start. Just wondering can I remove the aux bracket with the alternator still on it as it should come out from the top as apposed to trying to squeeze the alternator out from the bottom again!