Re: Alternator rebuilding

[Dan Brideau <dan@hobbyetc.com>]

Ben,

The bearings will be stuck inside the housing, not the shaft.  If you leave the housing in your oven for a while, they will come out a lot easier.  There are tools made to pull a bearing like this out, but you can fake it a lot of times.

The commutator is the copper area where the brushes rub.  The coils attach to the commutator.

Before you take your alternator down to the parts store (as a core - 'cause for like 100 bucks you can pay somebody to do all this for you), crack it open and see.


Dan Brideau
http://www.hobbyetc.com/scirocco/




At 08:21 AM 6/6/00 -0700, you wrote:
>So, do the bearings just slide on and off the main shaft?
>Is there any trick to doing this?  I have taken apart my alt
>before and seen how the bearings are in place...I just don't 
>want to destroy anything...like the new bearings!
>Is the commutator the magnets on the inside of the outer 
>housing or the coils on the spinning part?
>
>Thanks for the help!
>
>Ben
>
>
>--- Dan Brideau <dan@hobbyetc.com> wrote:
> > They scrape a layer of crud off the commutator, sandblast the shell, put
> > in new bearings and a new sticker on and send it to you.
> > 
> > If you have a lathe, you can clean your commutator nicely.  Check your
> > phone book for the bearings.
> > 
> > Dan Brideau
> > http://www.hobbyetc.com/scirocco/
> > 
> > 
> > 
> > At 12:27 PM 6/5/00 -0700, you wrote:
> > >Has anyone ever rebuilt an alternator?  The alt. in my 16v sounds like
> > the
> > >bearings are going bad...and at high rpm's (around 6000 rpm) the alt
> > will
> > >cut out until the rpm's fall back down below 6k (I have a new voltage
> > >regulator already...)
> > >
> > >I know that there are two bearings in the alt that need to be
> > replaced...
> > >what else is done when the alt is "rebuilt"?
> > >
> > >I just wanted to know how easy/hard this might be to do myself.
> > >
> > >Any help is appreciated
> > >
> > >=====
> > >- - - - - - - - - - - - - - - - - -
> > >Benjamin Harder
> > >86 Scirocco 16v
> > >81 Scirocco
> > >http://members.xoom.com/Scirocco16v/
> > >- - - - - - - - - - - - - - - - - -
> > >
> > >__________________________________________________
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> > 
>
>
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