[Vwdiesel] Alternator mix and match

[MLightner]

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>Message: 9
>Date: Wed, 24 Jan 2007 00:46:23 -0600
>From: James Hansen <jhsg at sasktel.net>
>Subject: Re: [Vwdiesel] Alternator mix and match
>To: MLightner <mikel at buncombe.main.nc.us>
>Cc: vwdiesel at vwfans.com
>Message-ID: <45B700BF.9050606 at sasktel.net>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
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>>    1) how hard is it to remove the bearings from one of these 
>>armatures? I have a bearing puller I've used before on electric motors, 
>>but it seems there was more clearance behind the bearings on the ones 
>>I've previously used it on - just wondering if there's any special 
>>tricks that might come in handy during non-destructive disassembly.
>>    
>>
>
>Don't even think about re-using a bearing you have pulled off using a 
>puller- unless you can grab the inner race, not the outer.  Grabbing the 
>outer race with any force brinells the race, guaranteeing later failure.
>These bearings are typically 5 bucks or less. false economy to try to 
>save one.
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>
Oh no, I would reuse 'em, except maybe for a kinetic sculpture or  some 
non motorized project or something.
I had figured I should be able to get the bearings for 4 or 5 bucks a 
piece too, but so far I found anywhere from 12 to 20  dollar prices, 
there's no auto-electric supplier  that I know of in town, and few  old 
style parts houses anymore.

>Mind the clearance on the plastic insulator (on the end bearing) that 
>was loose.  It has to take up the space, and needs replacing if worn, 
>except at times the case wears, so be"wear" of that...
>but it is an insulator, so don't fudge it together with shims and stuff 
>if it may not still function as one. (an insulator that is)
>  
>
Huh, good point, I guess it would be nice to be able to get a new shell, 
doesn't seem like they could cost too much, if you could find a source 
for them - guess they must start melting down if that bearing starts 
running too hot.

>>    2) The two armatures look identical except for the smaller rear 
>>bearing, could it be that they are indeed the same?
>>
>>    3) From reading in the archives and elsewhere I've gathered that to 
>>add a W terminal to an alternator you just need to solder a wire  to the 
>>Y junction of the three stator coils, can anyone confirm this?
>>    
>>
>
>Or is it to a single diode?
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>
Could be, I couldn't get a clear view of the connection for the W 
terminal even with the rectifier assembly free of the housing - would 
have had to do some unsoldering to get to see it.

>-james
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Thanks James

Mike