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Alternator Belt broken again 900

Hi folks,

940 SW 2.0 Turbo 1997

This is a persisting issue that I do not know how to resolve.

After only 10000 Km, today, the alternator belt (which was visually perfect two days ago when I inspected it, literately disintegrated, so bad that caused the A/C belt to slip off the pulley (I found it perfectly intact at the bottom of the splash screen). Never seen anything like that, out of the blue.
Luckily, I was not far from home.

I think this is due to a misalignment with the crankshaft pulley, as I think the alternator pulley is at least 2mm inward (towards the back of the car) comparing to the crankshaft pulley

See those two images I took some years ago, so see what I am talking about:

https://i.postimg.cc/hGbHm9BP/IMG-20210130-141702.jpg

https://i.postimg.cc/L63CNmWN/IMG-20210130-141714.jpg

The two rubber bushings that keep the alternator in the bracket are new, so I really do not know how to push the alternator forward.

Why did it move back? That I do not know, but I think after 26 years parts may move. I am basically the only person who work on this car since day 1, it is well maintained, and never had an accident.

Clearly something has moved with the time, not the bracket, it has never been touched and it is like welded to the block.

The only way I see to fix this is to play with the two rubber bushings, in theory the front one should be 2 mm thinner and the back one 2 mm thicker.
I have no idea how to modify them, and this is assuming the misalignment is the culprit.

Do you have any ideas on how to fix this?

As always, I can count on your help, wonderful Vfreaks! :)

Alex










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New Alternator Belt broken again [900]
posted by  Metallo  on Wed Aug 30 16:06 CST 2023 >


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