NEED HELP pressure bleeding clutch slave difficulties

[passat TS]

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Hydraulic systems are pretty simple. If you are applying pressure in the
system that's open, the fluid must get out from the opening(bleeder). That's
the whole principle.

I only see two possible things:

1. Either or both(less likely) cylinders are jammed. Manufacturer defect or
assembling.

2. There is something blocking the system. I suggest disconnect the hose on
the slave side and pump (foot or pressure bleeder). If fluid comes then you
have a slave jammed or blocked. Then work your way up in the system (the
connector, the coil tube, the master and the hose from the resevoir).

I hope it helps, good luck,

Carlos.






>From: ben swann
>To: quattro at audifans.com
>CC: shoemakersp at comcast.net
>Subject: NEED HELP pressure bleeding clutch slave difficulties
>Date: Fri, 04 Apr 2003 09:29:22 -0500
>
>As Sean mentions below, we are having trouble bleeding the newly
>installed slave cylinder. I have done this before on 5ktq, but for
>some reason, this time it is not working as expected.
>
>Shouldn't there be a steady stream of fluid/air&fluid coming from the
>bleeder fitting on the slave cylinder, when pressure is applied?
>
>I have the reservior chock full of fluid, so no air can get into the
>line feeding the clutch hydraulics.
>
>We resorted to trying to manually bleed - depressing the pedal with
>bleeder open, then pulling back up with bleeder closed, in hopes to
>force air out and draw the fluid in. Nothing/no combination of
>pressure bleeding or manual bleeding seems to be working. We have
>probably had a good pint of fluid come out the bleeder - it was
>bleeding at first - air -> air and fluid -> mostly fluid -> nothing.
>
>Now the pedal just gets sucked to the floor when depressed slightly. I
>have to admit I'm a little frustrated at this point.
>
>We'd appreciate any helpful tips on this or BTDT.
>
>Ben
>
>[Date: Thu, 03 Apr 2003 20:38:09 -0500
>From: shoemakersp
>Subject: NEED HELP pressure bleeding clutch slave difficulties
>To: Quattro List
>
>My friend and I are desperately attempting to button up the clutch swap
>in my '87 5000CS TQ wagon. We replaced the clutch slave cylinder as
>part of a throw-out bearing change. We are now having problems
>restoring pedal pressure at the clutch. This has drawn into a
>stalemate that would make one wonder if there is something wrong or
>perhaps we are doing this wrong. Here is the rough series of events to
>this point.
>
>1. We attached the pressure bleeder to the top of the brake fluid
>reservoir, applied pressure and opened the bleed valve on the slave
>cylinder.
>
>2. This resulted in much sputtering and a fluid air mix coming out. We
>went through quite a bit of fluid before it was a stream. He then
>retightened the valve.
>
>3. I attempted to depress the pedal and it snapped to the floor. We
>then tried to pump the fluid through with the pedal by opening the
>valve on the down stroke and closing it on the upstroke.
>
>4. At some point I had resistance through the last 2 inches of travel,
>but that was the best we got. Now we can apply pressure to the
>reservoir and open the valve and nothing comes out.
>
>I hope this is enough info for someone to see what the problem might
>be. My friend is now worried that something may have become lodged in
>the line because of the lack of fluid shooting everywhere that it
>should. The Bentley doesn't seem to provide much help here other than
>to say that you need to use a pressure bleeder.
>
>I hope someone can help, thank you for all of the help everyone has
>provided.
>-Sean
>
>'87 5k TQ wagon]
>

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