[urq] UPDATE - Clutch Slave Problem?

djdawson2 at aol.com djdawson2 at aol.com
Mon Sep 20 10:51:01 PDT 2010


 
"I rarely find the optimist intersects with the realist."

Boy, isn't that the truth.  Then folks like to refer to those that are realists as being "negative."






 

 

-----Original Message-----
From: qshipq at aol.com
To: racingiron at comcast.net; Urq at audifans.com
Sent: Mon, Sep 20, 2010 10:26 am
Subject: Re: [urq] UPDATE - Clutch Slave Problem?



 Excellent Eric!  Glad to finally hear a story directly from an anointed one 
that appears to have been *blessed* by the Audi gods.  After 20 years of working 
on Audis Eric, I prefer 'realist' to any optimism or pessimism label.  The 
optimist says it's fine, the pessimist says it can't be, the realist says pray, 
then just do the work necessary to get the job done right.  I rarely find the 
optimist intersects with the realist.

Thanks for reporting back

SJ

 


 

 

-----Original Message-----
From: racingiron at comcast.net
To: qshipq at aol.com; Urq at audifans.com
Sent: Sun, Sep 19, 2010 11:54 am
Subject: UPDATE - Clutch Slave Problem?



> Keep praying Eric!  A properly functioning clutch PP tines are the return for 
the Slave via 
> TOB.  The slave rests in the extended position only outside the trans, it's 
the TOB 
> against the PP tines returns the slave/clutch pedal to the respective 
'retracted/up' 
> position when installed in the 016.  I suspect the SMRpray method will at 
best, be a 
> temp fix.

Always the optimist, eh Scott?  You know I have high respect for your 
considerable experience, so I took a close look at the slave while waiting for 
the new cylinders to arrive.  As I wrote before, I had to hammer on the rod to 
free the piston.  The piston was then free enough to push it in by hand, but 
when released it came to rest several mm inboard of the circlip.  A light 
application of the clutch pedal pushed the piston to the end, but it was again 
frozen in place until whacked with great force.  I noticed a slight bit of 
corrosion/grime on the outermost section of the bore, and tried to clean it as 
best I could.  That, and some exercise of the piston by hand, seemed to get full 
travel back, although there was still a hint of stiction.

Figuring that I didn't have much to lose (except the possibility of ruining the 
friction disc if the slave barfed fluid), I popped the slave back in place and 
went at it with the pressure bleeder.  I got lots of nasty fluid (looked like 
liquid graphite).  Clutch operation seemed to be back to normal, so I took a 
short test drive.  It worked OK at first, but then it felt like it stuck briefly 
(release pedal, clutch stayed disengaged very briefly, then engaged abruptly), 
so I parked the car and waited for the new parts.

Yesterday I replaced both MC and SC.  Didn't have a chance to drive it until 
today.  I did around 100 miles in the local twisties, including several WFO 
pulls in 4th gear up steep grades to test clutch clamping force.  Lots of 
shifting up and down, stop and go stuff too.  I'm glad to report that it felt 
normal the whole time.  I'm hoping it'll stay that way, at least for the near 
future.

Eric R.
'86 urq
'92 urS
'93 urS

 
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