Lost Clutch Pressure - Ducati.ms

morvegil · Oct 8th, 2011, 7:46 pm

So i was in a 120mph turn and my pressure went out.

I made it to a biker bar to check what was up. Find out my NEW Evolution slave cylinder is gushing fluid.

Take it shop, pull it off...the bear was torn up..which tore up the 0 rings. Ive never hear dof this neither did the mechanics....ideas? I got a new one on....im thinking defect maybe?

FlyingQ · Oct 8th, 2011, 7:50 pm

What is the "bear"? How many sodas did you have at that biker bar?

morvegil · Oct 8th, 2011, 7:57 pm

Quote:

Originally Posted by FlyingQ

What is the "bear"? How many sodas did you have at that biker bar?

Sorry...bearing...it goes around the clutch rod...

FlyingQ · Oct 8th, 2011, 8:16 pm

If you're talking about the pressure plate bearing, then yes, they can be a problem. The clutch push rod, which seats itself in the bearing, should not be spinning with the engine running. If it is, the spinning can cause problems at the slave cylinder due to friction/heat build up. If you have an open clutch cover it's easy to check because you can see the end of the rod** in the center of the pressure plate bearing. If it's spinning fast, the bearing should be replaced. If you do run an open cover, that bearing is subject to any dirt, water, etc that can get to it. They go bad sometimes. Simple, easy, and inexpensive to replace. Always replace it when you replace a pressure plate.

EDIT: ** For clarification, it's actually not the push rod end you see when you look at the center of the pressure plate. It's the cap bushing that fits on the end of the push rod, but it acts as the end of the rod and should not be spinning.

TOP_DUC · Oct 8th, 2011, 8:19 pm

Sounds like the clutch release bearing failed and spun the push rod until the slave cylinder piston got so hot it burned up the seals. You need a new bearing, new slave, and new "mechanics"...

freezerburn · Oct 8th, 2011, 11:13 pm

You sure know hwo to fuck up a clutch ........

morvegil · Oct 9th, 2011, 12:46 pm

Quote:

Originally Posted by TOP_DUC

Sounds like the clutch release bearing failed and spun the push rod until the slave cylinder piston got so hot it burned up the seals. You need a new bearing, new slave, and new "mechanics"...

makes sense...guess if it happens again then get to fix this. I'll look to see if the rod thing is spinning

morvegil · Oct 9th, 2011, 4:34 pm

Quote:

Originally Posted by freezerburn

You sure know hwo to fuck up a clutch ........

im talented lol

morvegil · Oct 9th, 2011, 4:43 pm

So i checked mine, then checked some youtube videos. I see all of the middle rod things moving?

Ducati 1098 Open Dry Clutch - YouTube

Wait, if its spinning fast...hmm

TOP_DUC · Oct 9th, 2011, 5:01 pm

When the clutch is released, there should be no load on the rod, so bearing friction will tend to spin it a bit. The better test is to pull the clutch lever in and then observe the rod. It should not spin under load.