[Vwdiesel] Alt. light on at high RPM's

Nate Wall NWall at envasns.org
Thu Jan 24 13:21:08 EST 2002

** Proprietary **

alt. problem ended up being a rear bearing failure, as I took the regulator
to see how the brushes were, and remnants of bearings and dust shields lay
on the bottom...>>>>

Are you sure the rear bearing failed?  Years ago I thought the same when the pulley had lots of up and down play.  Disassembly revealed the plastic bearing carrier got loose and spun w/ the rear bearing, which wore out the bearing recess in the rear case half.  It was so bad the rotor had begun to rub the field coils.  I used aluminum (the real) duct tape and wrapped it around the bearing as a "Temporary" fix to take up the slack.  That was in 1992.  The alternator failed last year!  Got at least 9 years and about 150,000 extra miles out of it!  It got replaced w/ a $40 e-Bay special that was recently rebuilt!  Talk about luck.


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