Ducati Monster Forum

Moto Board => Tech => Topic started by: Privateer on February 13, 2010, 05:24:50 PM

Title: replacing clutch slave, bleeding line?
Post by: Privateer on February 13, 2010, 05:24:50 PM
04 620 replaced the clutch slave and now i can't get the clutch to disengage when the lever is pulled in.

I've tried bleeding it and all I get is fluid coming out, no bubbles.

Tried all the tips in the evoluzione "instructions" to no avail.


Any suggestions?
Title: Re: replacing clutch slave, bleeding line?
Post by: Speeddog on February 13, 2010, 06:03:52 PM
Did you pre-fill the slave?
Title: Re: replacing clutch slave, bleeding line?
Post by: Privateer on February 13, 2010, 06:08:39 PM
I couldn't do it without making a bloody mess so here's what I did:

attached clutch line with assembled slave, but did not install on bike. 
filled reservoir and repeatedly squeezed lever until piston was almost flush with the end of the body. 
sealed reservoir.
bolted on slave, using bolt tension to evenly snug up the body to the engine. 
uncapped reservoir, bled as normal (or tried at least).

No change.  up on the rear stand, i put it in gear, pull in the clutch and the tire still spins.
Title: Re: replacing clutch slave, bleeding line?
Post by: DarkStaR on February 14, 2010, 04:33:22 AM
Quote from: Privateer on February 13, 2010, 06:08:39 PM
...up on the rear stand, i put it in gear, pull in the clutch and the tire still spins.

Are you basing your whole issue on the above statement?,...because that's normal.

Clutch plates are dragging and spinning the wheel, but is not noticeable if there's a load on the drivetrain (off thestand).
Title: Re: replacing clutch slave, bleeding line?
Post by: erkishhorde on February 14, 2010, 04:51:42 AM
Quote from: DarkStaR on February 14, 2010, 04:33:22 AM
Are you basing your whole issue on the above statement?,...because that's normal.

Clutch plates are dragging and spinning the wheel, but is not noticeable if there's a load on the drivetrain (off thestand).

Depends on how fast it's spinning. He didn't quantify the speed of the spin so it's hard to say.
Title: Re: replacing clutch slave, bleeding line?
Post by: Privateer on February 14, 2010, 05:18:10 AM
hmm here again is where my own ignorance shows.  I suppose between the wheel spinning when it's on the stand and the lever feeling like mush made me think it wasn't functioning correctly.  

edit: looks like I had it right the whole time, I just didn't know.  That or strapping the clutch lever overnight helped.

Thanks for the help and lesson learned.
Title: Re: replacing clutch slave, bleeding line?
Post by: Privateer on February 14, 2010, 03:18:26 PM
went for a ride and everything seems fine.  the engagement zone of the pull was a little close to the bars so I screwed in the adjuster and it seems good to go now.


thanks again, everyone.  I'm kind of newb at this so I appreciate everyone's advice and patience.
Title: Re: replacing clutch slave, bleeding line?
Post by: ducpainter on February 15, 2010, 02:46:50 AM
Quote from: Privateer on February 14, 2010, 03:18:26 PM
went for a ride and everything seems fine.  the engagement zone of the pull was a little close to the bars so I screwed in the adjuster and it seems good to go now.


thanks again, everyone.  I'm kind of newb at this so I appreciate everyone's advice and patience.
That screw is not a lever adjuster.

That screw controls piston travel and is used to make sure fluid returns to the reservoir. If you have it in too far your clutch will slip as the bike warms up.