Here's a new rectifier assembly, Bosch, $47.

http://aspwholesale.com/index.php?act=viewProd&productId=1063

-------------
Max
Charleston SC

On Wed, Apr 13, 2016 at 9:46 AM, Dan Penoff via Mercedes <
mercedes@okiebenz.com> wrote:

> A shorted diode can appear as a load on the system, causing the voltage to
> drop significantly.
>
> And yes, a shorted diode would be bad, and often manifests itself as the
> alternator having at or near correct voltage, but the minute you apply load
> the output collapses. This is due to the output having an AC component
> since the diode is shorted and passing everything rather that preventing
> current flow in the proper direction.
>
> You can put your meter on the output and change it to the AC scale and
> you'll measure a voltage, too. That's another indicator that you're getting
> an AC component in the output.
>
> Dan
>
> Sent from my iPad
>
> > On Apr 13, 2016, at 1:20 AM, Curly McLain via Mercedes <
> mercedes@okiebenz.com> wrote:
> >
> > Thanks Peter,
> >
> > Would a shorted diode not be bad?
> >
> > How many amps would a shorted Diode draw?   Would this be consistent
> with my readings?  I am already committed to replacing the alt.  I am just
> wondering  if my diagnosis is right.
> >
> > Probably will get a used one but might go new...
> >
> >> Not a bad diode, a shorted one.
> >>
> >> Replace or rebuild the alternator would be my suggestion.
> >>
> >> Peter
> >
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