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The only time I have had alt bearings fail (was on my bug), they were fine at lower RPM. However once I got above 4k they started howling like a cat in heat. At 6k they were screaming like a banshee. When bearings go bad, they "usually" range from "moan" to "howl" to "whine" not "rattle" Because the noise seemed to go away at higher RPM, I would have guessed something like the fan being loose. Lower RPM gives it a chance to wobble. At higher RPM the centrifugal force keeps it "centered". I personally wouldn't guess something loose on the tin, but that's because it sounded too loud compared to the engine. As for checking if its the Gen...just remove the fan belt and fire it up for a sec or two. Should be able to verify if its the gen or no. Drake 72 Square "Ginger" FI/MT 63 Bug "Christine" ----- Original Message ----- From: "Greg Merritt" <gregm@vwtype3.org> To: <type3@vwtype3.org> Sent: Tuesday, August 19, 2003 6:30 PM Subject: Re: [T3] visit w/ the Baroness > At 8:14 PM -0500 8/19/03, Jim Adney wrote: > >> Fan shroud screw? Or, what do bad generator bearings sound like? > > > >Use a long screwdriver, blunt end in one ear, to track down the noise. > > Tried it... it just seemed to be fan-shroudy, probably left of center. > > What does a mechanically-failing generator sound like? How > does its noise change with rpms? > > I grabbed the gen. & crank pulleys in turn, and tried to make > them wiggle in the directions they're not supposed to wiggle, but > they seemd solid. > > -Greg > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org >