[Vwdiesel] Re: [Audi-VW-Diesels] New clutch slipping like mad

[David Cook]

I installed a whole new kit-disk, pressure plate,
throwout bearing.  I did nothing with the flywheel
except clean all the residue off it.

That sounds like my major error from talking with
folks and reading your advice.  Blast.  I've never had
a problem before with not doing that, although I don't
know if I've ever replaced a clutch because it was
slipping--always just a "while you have the trans out"
thing or once because of a bad throw out bearing.

Couple questions:  When I pull the trans to resurface
the flywheel, is the clutch likely trash now?  I'd
assume that the disc is now glazed as I've driven it
some 70 miles or so...  Is this "glaze" something that
can be removed, ie sanded off or something?  If the
disc is dead, how about the pressure plate?

Thanks,

David



--- James Hansen <jhsg at sasktel.net> wrote:

> No, clutches do not "break in".  They grip, or
> don't.
> If they slip, they glaze just like brake pads can if
> they are not properly
> bedded in when new.  A clutch cannot be allowed to
> slip due to the extreme
> heat that is generated when one does... there is no
> mechanism to remove the
> heat like brakes can.
> You reset the free play in the clutch cable... as in
> the clutch cable isn't
> holding the clutch partially disengaged?
> If there is free play in the clutch pedal, and you
> did not machine the
> flywheel and pressure plate surfaces, or better, use
> a new pressure plate, I
> would be suspicious of them if your old clutch was
> slipping.  Never simply
> install a new friction disc into a clutch that has
> been slipping.  The heat
> generated from slipping causes the metal surfaces to
> warp, and it will
> continue to slip.  Why this is, is because the
> higher spots touch, and the
> lower spots don't, and the amount of friction the
> higher spots can generate
> is insufficient, so the clutch winds up slipping,
> and glazing the friciton
> disc ensuring that the clutch will never perform
> properly.
> A stock 1986 clutch can hold over a hundred horses
> at bay, so if a new
> installation slips, there is something not right.
> -James
> 
> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com
> [mailto:vwdiesel-bounces at vwfans.com]On
> Behalf Of David Cook
> Sent: Saturday, November 26, 2005 2:42 PM
> To: audi-vw-diesels at yahoogroups.com; diesel list
> Subject: [Vwdiesel] Re: [Audi-VW-Diesels] New clutch
> slipping like mad
> 
> 
> So, maybe it needs to be broken in?  I've only
> driven
> a mile or so, so hopefully all that slipping didn't
> do
> anything...
> 
> David
> 
> --- David Cook <vwdieselbunny at yahoo.com> wrote:
> 
> > all-
> >
> > I just installed a new clutch in the diesel cabby,
> > and
> > took it for a test drive.
> >
> > Now, it is slipping 10 times worse than before I
> > started!  (And I removed an oil-soaked disk, etc!)
> >
> > I cannot for the life of me think of what could be
> > causing this.  I adjusted the cable way on the
> loose
> > end of things, to make sure that it couldn't be a
> > problem.
> >
> > Ideas?
> >
> > David
> >
> > David Cook
> > Red '86 Cabriolet Diesel Powered
> > Red '90 g60 Corrado
> > Brown and White '78 Westy Campmobile "Bear"
> > and others in various states of disrepair
> > Pictures here:
> > community.webshots.com/user/superdave5599
> >
> >
> >
> >
> > __________________________________
> > Yahoo! Mail - PC Magazine Editors' Choice 2005
> > http://mail.yahoo.com
> >
> 
> 
> David Cook
> Red '86 Cabriolet Diesel Powered
> Red '90 g60 Corrado
> Brown and White '78 Westy Campmobile "Bear"
> and others in various states of disrepair
> Pictures here:
> community.webshots.com/user/superdave5599
> 
> 
> 
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David Cook
Red '86 Cabriolet Diesel Powered
Red '90 g60 Corrado 
Brown and White '78 Westy Campmobile "Bear"
and others in various states of disrepair
Pictures here: community.webshots.com/user/superdave5599


	
		
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