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Sprag clutch.
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Tue Sep 17, 2013 3:35 pm    Post subject: Sprag clutch. Reply with quote

Thought I would put up a few pictures of what will face you when the sprag bearing plays up.

After the initial fairings off and the clutch cover and pressure plate/clutch plates out , the first obstacle is this, a nice round 60mm diameter nut.



Once a suitable tool can be found , apparently very common in Italy, but not so in the UK .
The front frame mount doubles up as a nice 3rd hand for the clutch basket holding tool.



After a good lever with a long bar and a few shift kicks of frustration of the vdue tyre the nut finally lets go and with renewed enthusiasm its the 15-20 m6 bolts removed to get the engine cover off. A bit of ' operation' with the cover to get it passed the frame etc , and a swift removal of the idler gear , we are there !! (top gear on right).



Whip the sprag housing off , removing the 4 m4 crappy csk bolts and thats it , bearing revealed !!



And only if it was that easy.
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851jim



Joined: 25 Apr 2013
Posts: 48
Location: Scotland

PostPosted: Mon Sep 23, 2013 4:56 pm    Post subject: Reply with quote

Hi Stu
Be aware of air locks when you start up again.
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Tue Sep 24, 2013 8:43 pm    Post subject: Reply with quote

Air locks in oil or water ?
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Tue Sep 24, 2013 11:18 pm    Post subject: Reply with quote

Air in the tires Confused

Trev
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851jim



Joined: 25 Apr 2013
Posts: 48
Location: Scotland

PostPosted: Wed Sep 25, 2013 4:28 am    Post subject: Reply with quote

Bleed the oil is easy.
Getting rid of cooling air lock if you get one is difficult.
The water temp might not show as high but the header tank gets a bit steamy.
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Wed Sep 25, 2013 7:19 am    Post subject: Reply with quote

not an issue with my vdue....temp gauge stuck on first led 40 degrees and never shows anything else... Sad
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Wed Feb 19, 2014 10:51 pm    Post subject: Reply with quote

great write up Smile
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Wed Mar 19, 2014 8:57 pm    Post subject: Reply with quote

will a ducati clutch tool fitt?
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Wed Mar 19, 2014 9:07 pm    Post subject: Reply with quote

Vorts a mate of mine...and I picked up the clutch tool for him.......its a standard Ducati clutch tool and fits.....yup
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Wed Mar 19, 2014 9:11 pm    Post subject: Reply with quote

thanks for the fast reply Very Happy
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Wed Mar 19, 2014 10:01 pm    Post subject: Reply with quote

hub holding tool from witch model Ducati ?
Might get new one , love new tools

Trev
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Wed Mar 19, 2014 10:18 pm    Post subject: Reply with quote

I think all the ducati dry clutches are the same
748, 749, 999, 1098, 1198 etc
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2bims



Joined: 03 Apr 2010
Posts: 7289

PostPosted: Wed Mar 19, 2014 10:19 pm    Post subject: Reply with quote

Any of them from a 1990 900ss right up to Ducati 1098....all same clutches, baskets, hubs etc..........Cost around 25 GBP new...but they;re that ruddy heavy the postage could cost the same if ebaying one......
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Thu Mar 20, 2014 8:36 am    Post subject: Reply with quote

I did buy one of those little one's that attach to the clutch cover fixing bolts, but guess what ???? Bimota decide not only to use a different bolt arrangement for the clutch basket but also use a different bolt pattern to Ducati for clutch cover so it does not fit. !!!!!!
I'm with 2bim's, the spanner type tool must weigh about 6-8kg.
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JRH



Joined: 21 Jan 2013
Posts: 223
Location: West Mids/North East

PostPosted: Tue Jul 01, 2014 9:55 pm    Post subject: Reply with quote

Just found out (thank god!) that the clutch holding tool is common to Benelli Tornado as well......
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