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Stripped alternator nut

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Post by JWILL on Tue Mar 07, 2017 3:28 pm

vw57drvr wrote:I hate to sound like a broken record, but that chrome pulley is junk. Find a german one....What kind of strap is that on the alternator?
The pulley is just what I had laying around when the other one played out.  I'll get around to it next time I go to the junkyard or order parts.

The strap is what has been on it since I bought it in 2010. No worries though- it just broke. Stripped alternator nut - Page 2 20170312
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Post by vw57drvr on Tue Mar 07, 2017 3:30 pm

Ouch. It didnt look right in the pictures, but sometimes they can be deceiving. How about the pulley alignment?
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Post by JWILL on Tue Mar 07, 2017 3:45 pm

The alternator pulley looks a little further back than the crankshaft pulley, but if I push it forward, the fan rubs.
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Post by JWILL on Tue Mar 07, 2017 4:02 pm

Maybe a 1/4" out.Stripped alternator nut - Page 2 20170313
Stripped alternator nut - Page 2 20170314
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Post by vw57drvr on Wed Mar 08, 2017 9:49 am

Unfortunately I have seen a lot of alternators built incorrectly. Those pulleys have to be in alignment. Yours is absolutely not right. If the fan rubs when it is aligned, then something about the alternator shaft is out of whack. There is a bushing behind the pulley that should keep the pulley in alignment not matter how you space the fan. About two alternator fan hub spacers is about right normally. Look at the picture I borrowed from the internet. Notice how close the pulley is to the alternator.

Stripped alternator nut - Page 2 PA310002
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Post by JWILL on Wed Mar 08, 2017 8:52 pm

...well I have two of the spacers that go behind the pulley. I could try grinding one of them down Question
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Post by vw57drvr on Wed Mar 08, 2017 9:48 pm

The only thing that goes behind the pulley is a bushing on the shaft. The inner part of the pulley rests against it. It may not be seated correctly or they assembled it wrong. Any chance that is the wrong pulley? It looks small but it may be an illusion. Make sure it's not for a 6 volt generator.
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Post by JWILL on Thu Mar 09, 2017 8:27 pm

The bushing from the old and new alternators is the same.  Also got a new pulley and it fits the same.  I'll try grinding the old bushing down this weekend.  Guess I'll need to find some more spacers/washers. Smile
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