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Re: 89 100 alternator or a/c fan problem

DeWitt Harrison wrote:
> On Sun, 20 Jul 1997 17:58:34 -0700, Igor Kessel wrote:
> > [ ... }
> >
> >Yesterday - same thing. A/C does not let the alt charge the batt.
> >
> >Now a question -- did anyone try to run a smaller dia. pulley on a Bosch alt?
> >Results? If positive - what was the source of the smaller pulley?
> The 3rd Bosch rebuilt (now dead) was installed with a smaller pulley
> courtesy of the rebuilder (rebuilts 1, 2 and now 4 were supposedly
> rebuilt by Bosch). This made no difference in voltage output which was
> 13.5 cold and which faded away to battery discharge voltage when hot.
> OTOH, the smaller pulley may have lead to the ultimate failure of the
> alternator due to increased rotor rpm. A rotor wire was actually
> ripped away by the centripetal force causing an electrical open.

Thanks for the warning, DeWitt. I was about to fire up a lathe and machine 
several sustom pulleys in different diameters. Guess won't do in now.

Igor Kessel
'89 200TQ - 18psi (TAP)
'97 A4TQ - on the boat
Philadelphia, PA