Hydraulic clutch line issue

 

I am just about to tap out on this hydraulic clutch problem. Running
great and I was just feeling that the engagement point was moving so
that it was earlier than usual so I thought I would just bleed the
system or adjust whatever needed to be adjusted.  Bled, and bled and
then bled some more.  Never got the normal resistance back in the
clutch lever and the clutch is not disengaging any more.  Figured it
had to be the master cylinder.  Got another one, not new, on Ebay.
Same deal.  Bled and bled and more bleeding.  Still no resistance on
the clutch lever.  I can see the slave cylinder moving ever so
slightly.  I am thinking that it is not moving enough but I have no
idea why.  I have been very careful in inspecting the slave cylinder
to make sure it is not restricted and everything appears to be moving
as it should.  I have been extremely careful in reattaching the slave
cylinder so that it is all the way 'on'.  The clutch itself seems to
be a very simple pin like thing sticking out of the clutch case.  I
cannot put any more fluid in there.  I cannot see how there can be any
air in the line.  I have removed the line and inspected it very
carefully to see if there are any leaks.   I have alot experience
bleeding brakes but this is my first clutch and it has so far been a
complete failure.

Any words of advice would be greatly appreciated.

 

Jim Lee wrote:

The hose might be ballooning under pressure. Not leaking.

 



BMW K1100LT  Ducati 750SS  Honda CB400F  Triumph Street Triple
Suzuki TS250ER GN250  Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com

 

The Older Gentleman wrote:

Then I didn't write that, it was an impostor.

 



Bubbles in the clutch line are forced to go downhill to the bleeder screw on the
slave cylinder.  You can't pump fast enough to get them all down there, some
will congregate at the highest point in the system, which is usually the banjo
bolt at the master cylinder.

Crack open the banjo bolt where the line attaches to the master cylinder.  Wrap
a rag around it and gently squeeze the clutch lever.  Tighten the bolt before
releasing the lever.  Do this  a couple of times listening for air bubbles. That
often fixes the trouble you describe.  Wrap the rag around it to keep the brake
fluid off your paint.  Brake fluid eats paint.  Quickly.

I have a dirt bike that has a too-long hose on the front brakes.  It makes a
loop above the master cylinder.  About once a year I have to bend that loop down
below the master and bleed it at the banjo.

--
Futility Man