Is my alternator pooched?

[Christien]

Trying to fix some fan scraping, I replaced the outer pulley half, because the old one had been chewed away from being mounted improperly, and developed a wobble. I installed the new one, and found it also won't sit straight, because the alternator shaft has been worn away. Am I screwed here? New alternator? I'd hate to have to buy a new one, because I just bought this one a year or 2 ago.

Pics:

[Driver_X]

Those threads look messed up, as does your fan. I would think you'll need to replace both....

[Crude Rudy]

You could try and band-aid it with some high strength JB Weld and see how that holds up.

[vash]

that blows.

i would fix it right. take it to an alternator shop. my shop fixed a bad shaft on mine years ago.

[coldstart]

Chris, I recently replaced my alternator-- you are welcome to the core which likely could be rebuilt. There are some other issues with it. E-mail me if you are interested.

Richard

[Christien]

that blows.



i would fix it right. take it to an alternator shop. my shop fixed a bad shaft on mine years ago.

So it can be repaired without replacing the entire alternator? That's good news.

I thought about jb welding it, but that seems like a pretty dicey thing to try.

Richard, thanks for the offer. I'll let you know how a repair works out.

[Driver_X]

Check out this thread with regards to your fan....I still think it looks pretty knackered.

Pulley Shims, Wrong Config?

[Christien]

What do you think is wrong with the fan?

[Driver_X]

Your wobbly pulley seems to have worn a significant groove in the fans shaft.

[Christien]

That's the shaft I'm talking about, where the pulley sits. The threads are fine - the nut goes on and torques down with no problem.

I'm taking it in to a machine shop today, and we'll see what they can do with it. I few years ago my pilot bearing on the tranny input shaft blew, and the end of the main shaft got worn down really badly. I was able to have it rechromed, and that worked like a charm, and at a fraction of the cost of replacing the main shaft.

[Driver_X]

Then your alternator is fine. That shaft is part of the fan.

[john walker's workshop]

weld up the fan hub and carefully reshape it with a disc cutter, grinder, file, etc.

[Christien]

Yep. Took it into a head and block shop today and that's exactly what he's going to do.