Bad clutch master cylinder?

Started by Halfast, September 01, 2010, 06:02:33 PM

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Halfast

The last thing I need to get my bike back on the road 100% is to get the clutch to work, which went all floppy on me after my accident.  It seemed like a simple air bubble, but after bleeding it about a half dozen times, twice with vacuum and then taking the whole entire system off the bike and hanging it vertical to get all the air bubbles out, I am still stuck with the same floppy-ass lever and no clutch power at all.

When I squeeze the lever, fluid only shoots into the reservoir and not down the line like it's supposed to which, to me, means that fluid is passing back behind the cylinder which means there MUST be a leak or tear in the cylinder. On a friend's suggestion I took the master cylinder off and took it apart to see if the piston inside was actually torn but of course, it's not which leaves a whole bunch of us over here completely baffled.  I'm about to order a whole new master cylinder from brembo for $350 because I'm so sick of this problem but there must be something else I can do right??! Damn, we're all out of ideas and I just want to ride.  It's been a month. Anyone else ever heard of this problem?
OK, how do I ride this thing?

Howie

Might help if you told us what model and year you have, and what master is on the bike.  Unless it is a radial the price is quite high.  Also, are you sure the problem is not the slave?

Halfast

sorry about my delayed response, internet is a bit dodgy around here.  I have an 05 S4R and I did actually find that the float assembly has 2 small holes in the rubber plunger which is why fluid is going back into the reservoir.  Unfortunately I can't find that float ANYWHERE.  Everyone I talked to said I just have to buy a whole new master cyliner...$260 shipped from Italy so it'll take a week.  Any other ideas? haha.  Thank you
OK, how do I ride this thing?

Bones

#3
they have this thing called ebay. it's quite magical. I found a M/C there for $40.

don't know the specifics of your crash, but you might also check the lines for crimps.

I'm a loner, Dottie...a rebel...

The Bearded Duc

2001 M750 - Sold
2006 S2R 800 - She's just darling

booger

get a used one for cheap and declare victory, they are in abundant supply
go to your dealer and see if they have any deals on take-offs, check eBay, check DMF Parts for sale, and check the various used parts sellers on the web
you don't need a new one
Everybody got a plan 'till they get punched in the mouth - Mike Tyson

2001 M900Sie - sold
2006 S2R1000 - sold
2008 HM1100S - sold
2004 998 FE - $old
2007 S4RT
2007 Vespa LX50 aka "Slowey"
2008 BMW R1200 GSA