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ducatipaso.org • View topic - No resistance at clutch lever
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 Post subject: No resistance at clutch lever
PostPosted: Tue May 19, 2009 8:22 pm 
I'm wondering if some of you folks could shed some light on a few things that I have not yet tried or figured out searching/reading the posts here for hours...

My bike has been sitting since last Fall. It wouldn't start up, but that was fixed relatively quick. However I discovered there was no resistance at my clutch lever. Plenty of fluid, but the lever action sounds a "quish" which I don't ever remember hearing before. Cover plate off and cleaned. No detected leaking down at that end. Pumping the handle does not affect the slave piston.
Next I lossened the bleeder valve and bled the line, refill of fluid, no bubbles....still nothing.
I removed the banjo bolt and bleeder screw and blew air in to "push" the piston out, 1mm.
Tried pulling at in with my fingernails, 1mm.

How far out should this piston come out without industrial strength pulling at it?

Still no resistance at lever at any point.
My next step is to prime the clutch mc and bleed as per recommendations in the posts I read.


Any other tips would be appreciated :thumbup:


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 Post subject: Re: No resistance at clutch lever
PostPosted: Tue May 19, 2009 11:31 pm 
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paso grand pooh-bah
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Joined: Mon Jul 19, 2004 12:00 am
Posts: 1714
Location: Eastern Shore, MD
model: 750 Paso
year: 1988
You probably have air at the master cylinder. Regular pump bleeding isn't enought to move the bubble down to the cover. Reverse bleeding will work if you have a syringe you can PUSH the fluid UP to the master which will push the bubble out into the reservior.


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 Post subject: Re: No resistance at clutch lever
PostPosted: Wed May 20, 2009 8:59 pm 
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Joined: Sun Jan 16, 2005 12:00 am
Posts: 257
Location: The Netherlands
model: 750 Paso
year: 1989
Before you start demolishing your bike, it sometimes helps when you drop the bike at its left or right side.. It'll take two persons to do it safely. Other option could be to pull the lever in and use a tierip to keep it activated. Leave it there for a night or two..
cheers!

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 Post subject: Re: No resistance at clutch lever
PostPosted: Wed May 20, 2009 11:16 pm 
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Joined: Sat Nov 08, 2008 3:51 am
Posts: 86
Location: oakland, ca, usa
model: 750 Sport
year: 1990
i know that the recommended amount of pumps for an alfa romeo after changing out the clutch master is 300. sometimes it just takes persistance - sometimes just shaking the bike/line and pumbing the piston many many times will do it.


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 Post subject: Re: No resistance at clutch lever
PostPosted: Thu May 21, 2009 12:27 am 
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paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
Posts: 1323
Location: SF Bay Area
model: 750 Sport
year: 1990
I'm a big fan of my brake vacuum pump. It can be reversed to pump fluid up into the system. Cover all paint in the area before you start. An air bubble in the Master cylinder can be very difficult to get to move. Adding a bleeder in the banjo bolts on the master cylinder usually helps.

Cheers,

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1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.


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 Post subject: Re: No resistance at clutch lever
PostPosted: Thu May 21, 2009 1:53 am 
Bike was sold today. Thanks very much for all of the help and tips. I had to sell because I can't ride anymore due to a med condition, so I'm going to go cry in my beer now and stare at the blank spot in the garage. :beer:


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 Post subject: Re: No resistance at clutch lever
PostPosted: Thu May 21, 2009 10:10 am 
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paso grand pooh-bah

Joined: Thu Jun 21, 2007 12:00 am
Posts: 1501
Location: Gothenburg, SWEDEN
model: 907 I.E.
year: 1991
Sorry, must be a real sad day! :,( :beer:

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907 I.E. -91
M900 -97
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