Clutch slave cylinder repair.

[kokis]

Hi there,
Once I had to tow my m696 to repair shop, while towing it I think I overpressed clutch lever and just after that it started to malfunc. Once in 8-10 stops, when I press clutch lever I can't change gear to neutral and have to use brake because bike still tries to move.
I had new master cylinder and replaced stock one and hoped that it will solve issue. It did not help. This issue still happens, less powerfull but bike still drags when clutch lever pressed.
I got my self to mechanic to bleed air from system and he says that there is no air in system and that is slave cylinder malfunction. Actually there were some air just 1 or 2 bubbles and he said there is no need to bleed air as there is no air. And now he wants to check slave cylinder.

clutch plates are new.
Does my issue looks broken slave or is it air in system? my mech guy refuse to do more air bleeding as he says he know what he says and there is no air..

[ducpainter]

99% of the time, if the slave isn't leaking, it's air.

Try tying the lever back to the grip overnight.

It will allow any tiny bubbles that might be in there to rise to the master.

[Spy+]

Check the cluthch lever to make sure that it is not engaging the clutch while it is depressed...rgds

[kokis]

99% of the time, if the slave isn't leaking, it's air.

Try tying the lever back to the grip overnight.

There is no leakage on visible part of slave cyl. side and fluid tank is full(no liquid disappeared during these 14 days)
After overnight lever press should I bleed slave cyl bleeder or the one I have on master?

Check the cluthch lever to make sure that it is not engaging the clutch while it is depressed...rgds

I've got adjustable lever and it does not seems to help. Clutch just engages\disengages more rapidly\slowly, "sweet spot" is wider or shorter.

[ducpainter]

There is no leakage on visible part of slave cyl. side and fluid tank is full(no liquid disappeared during these 14 days)
After overnight lever press should I bleed slave cyl bleeder or the one I have on master?
I've got adjustable lever and it does not seems to help. Clutch just engages\disengages more rapidly\slowly, "sweet spot" is wider or shorter.

On the master. Any air in the system should rise to the top.

Leakage from slave will appear on the sprocket side if it is leaking.

[ChrisK]

I've heard of this tying the clutch lever to the grip trick before, but was never clear on it - do you need to take the reservoir cover off for this to work? Take note I have the old style masters that have the rubber grommet that protrude down into the reservoir.

[Slide Panda]

No. No need to take the cover(s) off. Just secure the lever to the bar and let it set a while.

[kokis]

Any thoughts about damaging(and repair possibility) slave cyl by overpressing lever several times?

[ducpainter]

Any thoughts about damaging(and repair possibility) slave cyl by overpressing lever several times?

You can't 'overpress' the lever as far as I know.

Do you think the slave traveled too far?

[kokis]

I don't know what to think. My tech guy says that rubber gland in slave might cracked or inverted, and liquid is not leaking coz it goes to closed loop.
I am concerning that it is air because issue happens once in 5 times and there just a little more pressure needed to unstick plates, I even can operate with gears just after engine stops without lever re-press.

[SpikeC]

 I would be just a little suspicious of your mechanics thought processes.........

[kokis]

I would be just a little suspicious of your mechanics thought processes.........

[leo]that is why you read this thread

[kokis]

ok, I pressed lever overnight. will bleed master tomorrow. will see if it help

[kokis]

ok, I did not noticed any single bubble while making bleeding on master cyl after 18hrs of wait time.

[ducpainter]

ok, I did not noticed any single bubble while making bleeding on master cyl after 18hrs of wait time.

Does it work?