Hello,
i recently replaced my alternator due to a knocking/rattling sound coming from the housing. The sound did not go away. I took a few videos of the sound with and without the fan belt attached.
A little background on the knocking sound. When i took the alternator out over the weekend I found a decent sized crack in the alternator housing. I had it welded up by what i believe to be a competent magnesium welder. You can see pictures of the before cracks here.
went to replace alternator and housing is cracked
Unfortunately i didnt take an after picture before i put it back in.
1st is just checking fan belt tension. Is this about right?
20120618_185902.mp4 - YouTube
2nd gets you a nice listen in on the rattling/knocking sound with the fan belt attached
20120618 190004 - YouTube
3rd is with the fan belt disconnected. Sound is lower but i can definitely still hear the rattle.
20120618 192112 - YouTube
any help diagnosing the sound is appreciated. thanks