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Old Aug 11th 2018, 12:54 PM   #1
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Clutch bulletin + Rear brake issue

Just a reminder to check your rear brake caliper and let your dealer know if your clutch slowly loses feeling. I've been having to bleed air out of my clutch every couple hundred miles, no big deal, but apparently there was a bulletin put out less than 24 hours ago about that issue. Also, my rear brake constantly lost feeling and was bled by my dealer a few times only to go limp again a while later, turns out one of the piston seals is leaky.

I'm about 4500 miles in, for reference. They didn't find the leaky piston issue until they went to swap out my rear tire.
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Old Aug 11th 2018, 01:02 PM   #2
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Thanks. I have the fairings off right now, what can I look for?
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Old Aug 11th 2018, 07:26 PM   #3
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I had to bleed clutch once at about 2700 miles. I am at 3100 miles.
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Old Aug 11th 2018, 10:59 PM   #4
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How did you guys know to bleed the clutch? Just grabbier than normal?
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Old Aug 12th 2018, 07:14 AM   #5
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Originally Posted by spinkick View Post
How did you guys know to bleed the clutch? Just grabbier than normal?
It's the opposite. Loses feeling and the friction point starts moving closer and closer to the grip. Once air gets in the line it causes the sponginess due to it being more compressible than the clutch fluid.

I've been having to bleed every couple hundred miles. Takes 10 seconds and is not a huge deal, but pretty annoying for such an expensive bike.
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Old Aug 13th 2018, 09:50 AM   #6
gyh
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I am starting to have the clutch issue as well at just over 1000 miles. Does anybody know of any good tutorials on how to do this (or mind explaining how to do it yourself)?
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Old Aug 13th 2018, 04:59 PM   #7
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Originally Posted by gyh View Post
I am starting to have the clutch issue as well at just over 1000 miles. Does anybody know of any good tutorials on how to do this (or mind explaining how to do it yourself)?
It's super easy. There's a bleeder between the clutch lever/reservoir with a rubber cap and 11mm nut at its base. Put a wrench on the nut, remember what position the wrench is in. Pull in the clutch lever completely, crack open the bleeder nut. A very short hiss of air should be followed by fluid. The moment you see fluid leaving the bleeder hole, shut the nut by returning it to its original position. It's important to not torque down the nut too hard as they're very soft and extremely easy to strip, hence why you take note of where the wrench is prior to doing it.

Ta-da, you just bled air out of your clutch system. The lever should immediately feel stiffer and your engagement point will have moved further out to where it should be. If your lever developed enough slack, shifts (especially when not moving) might be easier.

Also, clutch/brake fluid is highly corrosive to paint, so place a rag under the bleeder and anywhere it could drip down to. Shut it the second fluid escapes it, and wipe up the fluid quickly. One time I did it, the fluid blasted out and actually covered some distance, so keep in mind where it's pointing relative to any other vehicles you may own.
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Old Aug 13th 2018, 06:56 PM   #8
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Originally Posted by MaverickiB View Post
It's important to not torque down the nut too hard as they're very soft and extremely easy to strip, hence why you take note of where the wrench is prior to doing it.
just wanted to repeat this since i ended up stripping mine. i have clutch issues forever so i bleed all the time repeatedly (and it works) but over time i got careless and this last time i tightened so much the screw is completely stripped plus it's stuck. absolutely my own fault for not wanted fluid to leak everywhere while i am riding so i for sure overtightened and it's going to be a pain to pull it out (i think the bleeder frozen).

anyway, i have the replacement part (they're inexpensive) and i probably have one good ride left before i have to fix it since my bike moves forward when in 1st gear and the clutch is pulled all the way in.

should i look to replace the master or the slave to help resolve the issue?
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Old Aug 14th 2018, 01:54 PM   #9
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I found this as well which seems to show the process described by MaverickiB. Intend to bleed mine this weekend.

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Old Aug 14th 2018, 02:57 PM   #10
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Disappointed in Ducati for not resolving this in the v4. My 1299 panigale had this issue for limp clutch since the first 200 miles of ownership and bleeding the clutch every 200 miles became a way of life.

The one and only way to fix this issue is a replacement of the clutch master cylinder. Replaced mine with a brembo rcs 16 after 3 years of carrying a 11mm wrench in my trunk and finally got fed up with the bleeding and got it done.

Should really be a recall from Ducati and brembo.
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brake, bulletin, clutch, issue, rear



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