[Vwdiesel] alternators

[Val Christian]

That's usually the problem.  The Bosch altenator brush assembly is
similar to the Motorola.  I find my brushes at an altenator/starter
rebuild place($5).  They cost more there (go figure) but I can never find
the size I want at Autozone or Advantage($3 for some).

Intermittent alt light operation, and having the light off prior to the
alt getting warm have been symptoms.  Recently I bought a DC clamp on
current probe.  I'm waiting for the next altenator to get marginal,
so I can check out the output.  My guess is that the output falls
off prior to other symptoms.

Oddly enough, I've had a couple of Chrysler minivan altenators pass 200K
miles without the brushes failing.  On my 91 Jetta Diesel, I'm on my 5th
set of brushes, at 200K.

Val

>
> Hi folks we have 4 (four) 1991 jetta diesels, and one of them is not chargi=
> ng it's battery right now even tho the light only works at startup. I have =
> replaced the little brush thingy in the past, on the Motorola chargers, thi=
> s one looks similar can I just un-screw the two screws, pop out the brush s=
> et, and try some new ones? Are they available as a separate part? Thanks an=
> d happy clattering, Dan.
>
>
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