Belt was not tight at all.
Thanks Ngoma for your opinion! Right after I posted my question here around midnight, I could not got to sleep (again) so I adjusted the belt in the middle of the night. (I was about to post another question again with the results of the fix.) I then saw that you answered me... Just as you suggested, the belt was not tight at all. It has a Volvo belt on the alternator and it looks, feels healthy. Squealing stopped right after tightening the belt. I did what you suggested but I was not sure how tight it is allowed to be. I attacked the 13mm nut and adjusted it... now it`s tighter but I can still push the belt `down` half an inch. Shall I go ahead and do it again?
I still have the voltage gauge drop big time if stuff inside the car is turned on, especially when I turn the heat on full blast (with lights etc)....
The high-pitched squealing belt noise stopped though. I might want to go back and tighten the belt more. How would you make sure that tension is right?
I`m curious if it is a good idea to use an additional bolt/nut in that gap to avoid any future incidents like this one?
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