[Shotimes] RE: Re: Alternator

[Zach Leahy]

a rough gauge of how tight to make the belt should be this:  You
should be able to twist the belt about 90 degrees on the longest
straight section.  too little tension and the belt will slip on A/C
engagement (or hop offf), too much and it will damage bearings in
components.  There is a pretty big window though, and you should not
have a problem getting it in there w/o a gauge.

There should be a lip on all the pulleys to keep the belt on, is that
present and undamaged?  This is turning out to be an interesting
problem.


Z

On Wed, 16 Mar 2005 08:48:56 -0500 (Eastern Standard Time), Carl
Prochilo <gr8sho@prochilo.myserver.org> wrote:
> I replaced the belt yesterday after I inspected all the pulleys, which all
> (idler, AC and ALT) spin freely.  Car started right up and ran fine.  AC
> blows cold, system was charging from best I could tell.  At some point
> yesterday, the new belt jumped off again!!  No visible signs of damage.  I
> had one guy take a quick look at it.  He came up with the same
> observations I had about the pulleys spinning freely.  So either I didn't
> tighten the belt enough, possible since I didn't have a tension
> measurement tool handy, or there's something else amiss like the crank
> pulley might have an issue that I can't detect.
> --
> Cheers,
> Carl Prochilo
> 92 Ultra Red Crimson
> 
> On Tue, March 15, 2005 4:27 pm, Leigh Smith said:
> >>Carl;
> > Since your description mentions a "lurching" sensation, I would
> > investigate
> > to see what caused the belt to tear. Could have been some object jammed in
> > there (you should see evidence) or more likely a bearing on some component
> > died.
> > Make sure the altenator and any other bearing on the same belt spin
> > freely!!
> > ..
> > At 200k mi, why don't you unbolt the altenator and have you or a rebuild
> > shop put in $10 worth of brushes? They can't & won't last much longer! I
> > strongly recommend keeping your unit, unless the rotor/stator is trashed.
> > You'll be miles ahead keeping your known good core unit (with new brushes)
> > than buying a "rebuilt" unit from AZ with unknown core quality.
> > Lee
> >
> >
> >  But now the problem turns out to be the alternator belt has come off.  I
> >> think that the PS and alternator are on two separate circuits.  There is
> >> a
> >> 1/8" tear in the old belt.  I am going to put the thing back together to
> >> see if there are any other issues.  All the pulleys appear to be fine.
> >> --
> >> Cheers,
> >> Carl Prochilo
> >> 92 Ultra Red Crimson
> >
> >
> >>>The alternator in the 92 finally gave out this morning with a little
> >> >> >>better than 215K miles.  Part of the reason it died was a self
> >> >> inflicted
> >> >> >>wound I imposed on it.  When it failed this morning, it was like
> >> the
> >> >> car
> >> >> >>lurched forward as if someone was holding the car back and then let
> >> >> go.
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