clutch problem

johnm · Post by **johnm** » Wed Oct 12, 2011 2:24 pm

hello everyone,
i need help, the clutch on my 907 will not release all the way, only 1.6 mm. i have checked the rod and it is ok, no scoring its straite and moves freely. i have replaced the slave, master and the line but still no change. i am the mclaren f1 tech in the u.s. west coast and it is killing me that i cant find the problem with this clutch. if anyone can help that would be great.

thank
john

higgy · Post by **higgy** » Wed Oct 12, 2011 2:46 pm

If you are satisfied the system is bleed completely,which can be challenging check out your clutch stack.
There is an article here http://www.mad-ducati.com/Technical/Clu ... cking.html

and a few in the FAQ's on this website you can also do a search here on clutch stacking to find some more ideas

On a side note,Ducati has changed the spec several times over the years
It is not uncommon to need to add a plate or remove one or replace a warped one.
Deglazing is also a good idea while you have it apart

du907 · Post by **du907** » Wed Oct 12, 2011 10:11 pm

To go along with the above comment:
Bleeding the line. The master cylinder is angled up slightly when mounted on triple clamp and air can sit in the master cylinder no matter how much you bleed the line. Unmount the clutch master cylinder from the handle bars and when bleeding the line make sure the master cylinder is level so the air bubble will be forced out.
du907

du907 · Post by **du907** » Wed Oct 12, 2011 10:11 pm

To go along with the above comment:
Bleeding the line. The master cylinder is angled up slightly when mounted on triple clamp and air can sit in the master cylinder no matter how much you bleed the line. Unmount the clutch master cylinder from the handle bars and when bleeding the line make sure the master cylinder is level so the air bubble will be forced out.
du907

johnm · Post by **johnm** » Thu Oct 13, 2011 2:02 pm

thankyou grand pooh-bah, the mad duc link helped me find the problem, it was the stack hieght i had the concave plate and the wave plate from the barnett clutch in at the same time. all is good now, thanks again.

higgy · Post by **higgy** » Thu Oct 13, 2011 2:28 pm

I was going to mention if you install the Barnett you should follow their info. On mine it still took some fiddling with the plates to get it working good,if I remember I had to add a plate to get the stack proper

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