At this point, it sounds like you've already got a headache.

Should be two bolts, one pivot bolt & one to tighten in position when you're taking slack out of the V-belt.

Adjusting bolt goes to bracket, pivot bolt should go through a spacer, then gets set into the front of the block...

I have always been able to break it loose with a breaker bar.

Assuming the bolt won't move and that the head is rounded off, you might have to remove the head of the bolt, then bring the entire alternator assy. forward to slip it off of the pivot bolt. I'm not sure if there's enough room to do that. If you can slide the assy. off of that bolt, removing the bolt would then require a stud removing tool. If I could get it to this point, I think I'd try to break the threads loose by trying to screw the bolt in farther... any little bit of movement, then work the remainder of the bolt back and forth until it can be removed.

 

 

 

A medium sized pipe wrench is your friend here.

 

If you're dealing with the bolt that the alternator pivots on - drill a 1/8" hole in the aluminum alternator flange and another 1/8" hole in the steel, round spacer and soak with penetration oil, then heat.

 

 

I went to pull an alternator in the junkyard, big 74 buick. The aluminum alternator had completely fused itself to the bolt. It wasn't stuck in the block. Heat, lots of heat is about all that will work, make several heat/cool cycles.

 

 

The best thing I've found to act as a penetrating oil is a 50/50 mixture of acetone and type F tranny fluid. Far better than PB Blaster or WD-40.

 

X2 on that. Lube it every day for a week. Then give a try.