Crank Pulley Wobble (was Re: [Shotimes] RE: Re: Alternator)

[Ian Fisher]

Do you have the ASP crank pulley UDP?

Ian

--- Carl Prochilo <gr8sho@prochilo.myserver.org>
wrote:

> Put the car back together a second time.  This time
> I had some good sun
> shining into the motor and after I started the car
> and drove it around, I
> found that there is a definite slight wobble in the
> crank pulley.  I can
> see that the wobble might be enough under certain
> conditions, like the
> belt not being on tight enough originally, to hop
> off the pulley.
> 
> So at this point the car will no longer be driven
> until this is taken care
> of.  My initial plan is to get both belts off and
> then attempt to pull the
> crank pulley (crankshaft damper assembly according
> to the service manual)
> off to see if the harmonic balancer has failed or
> something worse is going
> on.
> -- 
> Cheers,
> Carl Prochilo
> 92 Ultra Red Crimson
> 
> On Wed, March 16, 2005 9:27 am, Zach Leahy said:
> > 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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