How do you get a lower alternator bolt out

Hi,
How do you get a lower alternator bolt out, It moves with the alternator but won't turn independently. It's a dual pulley 1100933 63A, 1C2512VNEO.
I'd offer it up for trade for a single pulley alt if I can get it off without breaking it.
Bruce

 

Okay, it's been a while since I've done this, but does the lower bolt have a nut on the other end? I think one is a long bolt with a nut on it.
If so, you might need a wrench on the nut to keep it from spinning.

You could try heating the head of the bolt with a propane torch.
If that doesn't work, and soaking it with lots of penetrating oil doesn't help, you might have to get a long bar on the end of the wrench and risk breaking it.

 

If it is turning and there is no nut(not sure about your year) Then threads are probably damaged. Get a screwdriver under the head of the bolt and put pressure against the bolt head angling it against bracket while you turn bolt with wrench. This pressure should force out bolt until you hit good threads

 

I know my 65 300 has a nut on the backside you need to hold,spray it all up good with PB Blaster and just work at it,alot of times they can be stuck in there pretty good from the crud even after the nut is removed,just do some working it back and forth and some prying once the nuts off.Hope ya get it figured out.I have a spare single pulley one but not sure if its worth shipping it as you can buy a rebuilt for around 25.00.

 

actually the long bolt should go into the head.you probably have some crud built up on the bolt(steel to aluminum).penetrating oil & elbow grease works,just takes time.btw if all you want to do is change the pulley you dont need to pull the unit,change it on the car.borrow an impact wrench,15/16 socket to remove the pulley nut,change pulley :laugh:

 

Thanks for the replys. The steel bolt has corroded inside the aluminum of the alternator. Its an AC bracket thats got to come off and get changed to a non AC bracket, plus the alt need one bearing replaced.
Bruce

 

smack the head of the bolt with a big hammer.

 

We've had the torch trick help when the dissimilar metals reacted & corroded together.

No matter how you do it, if you get it to budge even a little bit, reverse motion. In other words, loosen, tighten, loosen, tighten. Work it out with patience.

 

I had the same trouble when rebuilding the 400 motor a few years ago. The bolt was loose in the head but seized in the alternator. :ball: I ended up taking my sawzall and cutting the bolt off in between the bracket and head and the whole works came off. The threads unscrewed right out of the head. I had to soak the alternator and bracket and use a driftpin the wack it out. :Smarty:


You can get a new bolt off the HELP rack in any part store. :TU:

 

Thanks for the help. Looks like I'm going to saw it off between the head and bracket. Snapped the bolt head off last night ou:
Bruce

 

alt.

Just use a little heat with the touch on the bracket just be carefull that's what I use even if you broke the head you can still turn it if vise grip hitting could brake the bracket.

 

Bruce// sawsall is the only way togo //put antiseize on new bolt/ whole length of bolt// trudy

 

Thanks for the reply, gingerly sawed the bolt off between the block and bracket, drilled out the old bolt through the aluminun casting, All back installed in good shape.
Bruce