NEED HELP pressure bleeding clutch slave difficulties
ben swann
benswann at comcast.net
Sat Apr 5 01:00:08 EST 2003
It turned out to be a bad master cylinder - coincidentally must have
been going bad and failed during bleeding. Replaced and all is well.
Ben
----- Original Message -----
From: passat TS <passat_ts at hotmail.com>
Date: Friday, April 4, 2003 10:00 am
Subject: Re: NEED HELP pressure bleeding clutch slave difficulties
> <span><p><div style='background-color:'><DIV>
> <P>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.</P>
> <P>I only see two possible things:</P>
> <P>1. Either or both(less likely) cylinders are jammed.
> Manufacturer defect or assembling.</P>
> <P>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).</P>
> <P>I hope it helps, good luck,</P>
> <P>Carlos. </P>
> <P> </P>
> <P> </P>
> <P>
>
> </P></DIV>
> <DIV></DIV>
> <DIV></DIV>>From: ben swann <BENSWANN at COMCAST.NET>
> <DIV></DIV>>To: quattro at audifans.com
> <DIV></DIV>>CC: shoemakersp at comcast.net
> <DIV></DIV>>Subject: NEED HELP pressure bleeding clutch slave
> difficulties
> <DIV></DIV>>Date: Fri, 04 Apr 2003 09:29:22 -0500
> <DIV></DIV>>
> <DIV></DIV>>As Sean mentions below, we are having trouble
> bleeding the newly
> <DIV></DIV>>installed slave cylinder. I have done this before
> on 5ktq, but for
> <DIV></DIV>>some reason, this time it is not working as
> expected.
> <DIV></DIV>>
> <DIV></DIV>>Shouldn't there be a steady stream of
> fluid/air&fluid coming from the
> <DIV></DIV>>bleeder fitting on the slave cylinder, when
> pressure is applied?
> <DIV></DIV>>
> <DIV></DIV>>I have the reservior chock full of fluid, so no air
> can get into the
> <DIV></DIV>>line feeding the clutch hydraulics.
> <DIV></DIV>>
> <DIV></DIV>>We resorted to trying to manually bleed -
> depressing the pedal with
> <DIV></DIV>>bleeder open, then pulling back up with bleeder
> closed, in hopes to
> <DIV></DIV>>force air out and draw the fluid in. Nothing/no
> combination of
> <DIV></DIV>>pressure bleeding or manual bleeding seems to be
> working. We have
> <DIV></DIV>>probably had a good pint of fluid come out the
> bleeder - it was
> <DIV></DIV>>bleeding at first - air -> air and fluid ->
> mostly fluid -> nothing.
> <DIV></DIV>>
> <DIV></DIV>>Now the pedal just gets sucked to the floor when
> depressed slightly. I
> <DIV></DIV>>have to admit I'm a little frustrated at this
> point.
> <DIV></DIV>>
> <DIV></DIV>>We'd appreciate any helpful tips on this or BTDT.
> <DIV></DIV>>
> <DIV></DIV>>Ben
> <DIV></DIV>>
> <DIV></DIV>>[Date: Thu, 03 Apr 2003 20:38:09 -0500
> <DIV></DIV>>From: shoemakersp <SHOEMAKERSP at COMCAST.NET>
> <DIV></DIV>>Subject: NEED HELP pressure bleeding clutch slave
> difficulties
> <DIV></DIV>>To: Quattro List <QUATTRO at AUDIFANS.COM>
> <DIV></DIV>>
> <DIV></DIV>>My friend and I are desperately attempting to
> button up the clutch swap
> <DIV></DIV>>in my '87 5000CS TQ wagon. We replaced the clutch
> slave cylinder as
> <DIV></DIV>>part of a throw-out bearing change. We are now
> having problems
> <DIV></DIV>>restoring pedal pressure at the clutch. This has
> drawn into a
> <DIV></DIV>>stalemate that would make one wonder if there is
> something wrong or
> <DIV></DIV>>perhaps we are doing this wrong. Here is the rough
> series of events to
> <DIV></DIV>>this point.
> <DIV></DIV>>
> <DIV></DIV>>1. We attached the pressure bleeder to the top of
> the brake fluid
> <DIV></DIV>>reservoir, applied pressure and opened the bleed
> valve on the slave
> <DIV></DIV>>cylinder.
> <DIV></DIV>>
> <DIV></DIV>>2. This resulted in much sputtering and a fluid air
> mix coming out. We
> <DIV></DIV>>went through quite a bit of fluid before it was a
> stream. He then
> <DIV></DIV>>retightened the valve.
> <DIV></DIV>>
> <DIV></DIV>>3. I attempted to depress the pedal and it snapped
> to the floor. We
> <DIV></DIV>>then tried to pump the fluid through with the pedal
> by opening the
> <DIV></DIV>>valve on the down stroke and closing it on the
> upstroke.
> <DIV></DIV>>
> <DIV></DIV>>4. At some point I had resistance through the last
> 2 inches of travel,
> <DIV></DIV>>but that was the best we got. Now we can apply
> pressure to the
> <DIV></DIV>>reservoir and open the valve and nothing comes out.
> <DIV></DIV>>
> <DIV></DIV>>I hope this is enough info for someone to see what
> the problem might
> <DIV></DIV>>be. My friend is now worried that something may
> have become lodged in
> <DIV></DIV>>the line because of the lack of fluid shooting
> everywhere that it
> <DIV></DIV>>should. The Bentley doesn't seem to provide much
> help here other than
> <DIV></DIV>>to say that you need to use a pressure bleeder.
> <DIV></DIV>>
> <DIV></DIV>>I hope someone can help, thank you for all of the
> help everyone has
> <DIV></DIV>>provided.
> <DIV></DIV>>-Sean
> <DIV></DIV>>
> <DIV></DIV>>'87 5k TQ wagon]
> <DIV></DIV>>
> <DIV></DIV></div><br clear=all><hr>Help STOP SPAM with the new MSN
> 8 and get 2 months FREE*</span>
>
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