Broken alternator adjustment bracket lower bolt!! - Saab 900 Bulletin Board - Saabnet.com
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Broken alternator adjustment bracket lower bolt!!
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Posted by Snowmobile [Email] (#686) [Profile/Gallery] (more from Snowmobile) on Mon, 16 Jul 2018 08:29:42 Share Post by Email
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Wondering if anyone has run into this problem? Even better, did you find a solution?!

Have recently noticed some on and off squeaky noise coming from the belts area. Finally got a chance to look into belt tension and noticed that both alt belts were loose could push down almost 3/4". The car has been running quite well, though a little touchy to start... so it was charging, but not perfectly.

Turns out the intermittent squealing sound was not the belts, but rather the bottom of the alternator tension adjustment bracket rubbing some of the time against a (now very shiny) pulley. The bolt that should have held it to the engine was loose in by the rack and snapped off at the start of the threads. A year or so ago I did an alternator swap on this car to no avail, my saab tech then redid the swap thinking it might be a bad luck alternator only to find out it was a silently kaput crank pulley. So this thing has been apart a couple times... Somewhere along the line, the bolt has snapped, presumably leaving threads in the block... kind of surprising that it would snap in operation, but who knows what happened...

I guess, the right way is to pull the engine, drill out and re-tap. That is not feasible (certainly not cost/time effective). Anyone been in this situation before?

I'm considering fabricating a custom tension bracket to mount to one of the bolts for the compressor. Bushings here would be an issue. The curvature of the existing bracket makes it hard to customize also so I may have to get a new one made up. Any other thoughts?

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