[Mini] Clutch throw-out [SEC=UNCLASSIFIED]

[Donald, Ian MR]

UNCLASSIFIED

 Its worth checking the inside of the shuttle that carries the realease
bearing as well.  The internal drilling that the clutch arm goes into should
have parallel sides.  The ball on the end of the arm usually wears a matching
socket/hole in the shuttle.  This can load the ball as it moves through its
normal up and down travel - sometime causing it to break off.

If you're lucky the arm will just fracture at the top of the ball and you may
retain some (mushy feeling) clutch travel before ultimate failure... BTDT

Cheers, Ian


Ian Donald
ITAR Manager
Air Warfare  Destroyer
R2-6-B071
+61 (0)2 6266 0170
0427 921 819
(Fax) 62642428
 
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-----Original Message-----
From: mini-list-bounces at autox.team.net [mailto: On Behalf Of Frits Schouten
Sent: Wednesday, 17 April 2013 06:15
To: Tom Francis; Anne
Cc: Mini-List; Minilist (yahoo)
Subject: Re: [Mini] Clutch throw-out

Yep that ball can be very worn.
Again, I got the welder out and layered a bit more metal on and then filed it
to shape again :-).

Cheers,
Frits.

On Tue, 16 Apr 2013 15:57:28 -0400, Tom Francis wrote
> Easy! You need a new clutch arm and plunger thingy. Quick bodge is to
> heat & bend the clutch arm.
>
> Basically, the little ball joint at the end of the clutch arm is worn
> (Or the bit it mates to).
>
> Used to have this problem a few times in the past.
>
> And more than anything, I am shocked that I still remember this after
> all these years! ;)
>
> Good luck!
>
> Tom...
>
> On Tue, Apr 16, 2013 at 3:46 PM, Anne <minilists at mibv.com> wrote:
>
> > As mentioned in the other message 'we' did some work on the Van last
week.
> >
> > One of the things was to replace the standard clutch with an uprated one.
> >
> > Ever since the Van is back on the road with the supercharger the
> > clutch would slip if I would put my foot down.
> > It turned out it was a bit greasy, although the seal seemed in
> > perfect order.
> > (Which can not be said of the clutch housing but that's another
> > story)
> >
> > Anywhoo,
> >
> > The seal was replaced by a fresh one, plate was replaced by an
> > uprated version C-AHT596 as was the diaphragm changed to the 'grey'
> > version C-AEG482
> >
> > And then something weird had happened.
> >
> > The clutch would not fully dis-engage anymore.
> > The travel was not enough for the plate to come fully free of the
flywheel.
> >
> > After bleeding the system and checkign for air, we figured that,
> > even at full throw, the slave cylinder just wouldn't be able to push
> > the lever out far enough to get the clutch to fully dis-engage.
> >
> > After taking everything off and putting back the old diaphragm we
> > concluded that the old one had even 1mm more travel before it would
> > start to dis-engage.
> >
> > In the end a 3mm washer was fitted behind the clutch bearing and now
> > it does again fully dis-engage.
> >
> > None of the people at the DIY shop, among them experts with years of
> > english car experience, could give a definitive reason as to why all
> > of a sudden the throw-out had lost several mm.
> >
> > Anyone here have an idea?
> >
> > I've since driven a couple of hunderd km's without any issues, so it
> > seems that fitting the washer has done the job.
> > It still is odd though.
> >
> > Anne.
> > _______________________________________________
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