[DeTomaso] third update on clutch slave not compressing fully

Forest Goodhart forestg at att.net
Sun May 13 00:23:50 EDT 2012


It could be that the slave is bottoming out or is bound up with varnish. Shorten 
the rod about 1/8" and see what happens.




________________________________
From: Pantdino <pantdino at aol.com>
To: asajay at asajay.com; detomaso at realbig.com
Sent: Sat, May 12, 2012 8:42:16 PM
Subject: Re: [DeTomaso] third update on clutch slave not compressing fully


Thanks for your thoughts.
At this point the slave is the guilty party, so I'm going to remove it anyway. 
Then I'll be able to confirm what you suggest.
But it seems to me that once I have tapped the piston back in and created play 
in the slave-clutch lever connection and the clutch lever moves fine I have 
ruled out binding / seizure inside the bell housing. 


For the problem to be inside the bell housing there would have to be a point at 
which severe binding occurred, none whatsoever short of that, and nothing of 
significance beyond it, as the clutch pedal is not heavy to operate.

I don't have very strong hands, and the tapping I do with my mallet is probably 
no more force than a strong guy could do with his hands.

Jim





-----Original Message-----
From: Asa Jay Laughton <asajay at asajay.com>
To: detomaso <detomaso at realbig.com>
Sent: Sat, May 12, 2012 8:24 pm
Subject: Re: [DeTomaso] third update on clutch slave not compressing fully


But you need to disengage it all.  For all you really know, unless 
ou've disconnected that linkage, when you are pounding the piston back 
n, you may be hammering something in the bellhousing and -not- the 
lave cylinder.  By disconnecting the linkage you can verify the 
ellcrank lever moves smoothly when not engaging the clutch.  That will 
solate it from the hydraulic system.
If the bellcrank lever moves as expected, then you need to start looking 
t the rest of the system, slave, master, lines in between, age of 
luid, etc.
OH, and there is absolutely NO reason you should have to "hammer" the 
lave piston back in.  It should move smoothly by -hand-, albeit with a 
ittle bit of umph.  If it's more than you can move by hand... something 
s wrong, you need to disconnect and isolate the individual systems.
Asa Jay
Asa Jay Laughton, MSgt, USAFR, Retired
  Shelley Marie
pokane, WA
*****************************
ttp://www.racingagainstautism.com
ttp://www.teampanteraracing.com
ttp://facebook.com/racingagainstautism

n 5/12/2012 8:18 PM, Pantdino wrote:
At least on my car the slave rod is not actually attached to the piston-- it 
ust has a convex end that sits in a concave depression in the piston. So I can 
ush the rod perpendicular to it's axis and feel and see it moving around when 
t's not under tension and play exists. When there is play the clutch arm moves 
asily.

Jim

-----Original Message-----
From: Asa Jay Laughton<asajay at asajay.com>
To: detomaso<detomaso at realbig.com>
Sent: Sat, May 12, 2012 7:47 pm
Subject: Re: [DeTomaso] third update on clutch slave not compressing fully



You need to suck it up and press that pin out of the bellcrank lever.
ithout being able to disengage the individual items of the system, you
ould keep guessing for days.
Asa Jay
Asa Jay Laughton, MSgt, USAFR, Retired
    Shelley Marie
pokane, WA
*****************************
ttp://www.racingagainstautism.com
ttp://www.teampanteraracing.com
ttp://facebook.com/racingagainstautism

n 5/12/2012 6:39 PM, Pantdino wrote:
  Well, cracking the bleed nipple open did not cause anything to move.  A 
ittle
luid came out, but I still couldn't push the slave piston up. Tapping w mallet
as successful. Attaching the rather strong spring did not move the arm with 
he
ipple open either.  Tiny pulses of fluid exiting the nipple were seen w each
ap of the mallet.

  So it's not an hydraulic problem with the master cylinder, it's a local
inding issue. My current theory is that the slave piston is binding in the
ore. Large hydraulic pressure from the clutch pedal depression is able to move
he piston but the little return spring or my girly arm is not.

  Any other theories?







  -----Original Message-----
  From: Pantdino<pantdino at aol.com>
  To: jb841<jb841 at cox.net>; detomaso<detomaso at realbig.com>
  Sent: Sat, May 12, 2012 6:05 pm
  Subject: Re: [DeTomaso] second update on clutch slave not compressing fully



  hat occurred to me too. But since the system is under pressure I won't even
  eed the spring on.  I suspect that when I crack the bleed nipple loose the 
rm
  ill move and I'll have play again. With the spring on you can't evaluate for
  lay without taking it off again
  Jim

  -----Original Message-----
  rom: John Buckman<jb841 at cox.net>
  o: detomaso<detomaso at realbig.com>
  ent: Sat, May 12, 2012 5:54 pm
  ubject: [DeTomaso] second update on clutch slave not compressing fully

  im,
  ith the spring installed, try opening the slave's bleeder screw slightly to
ee
  f the slave retracts further
  .e.  the stop bolt comes to rest at its stop).  Also check for free play at
  e master cylinder's pushrod.  The
  shrod needs to be touching the retaining washer in the master cylinder.  You
  n't see the forward end
    the pushrod, as it's inside the master cylinder.  You may have to pull the
  n from the pushrod's yoke to
  eck.
  ohn
  _____________________________________________
  etomaso Forum Managed by POCA
  rchive Search Engine Now Available at http://www.realbig.com/detomaso/
  eTomaso mailing list
  Tomaso at list.realbig.com
  tp://list.realbig.com/mailman/listinfo/detomaso
  _______________________________________________
  Detomaso Forum Managed by POCA
  Archive Search Engine Now Available at http://www.realbig.com/detomaso/
  DeTomaso mailing list
  eTomaso at list.realbig.com
  ttp://list.realbig.com/mailman/listinfo/detomaso

  _______________________________________________

  Detomaso Forum Managed by POCA

  Archive Search Engine Now Available at http://www.realbig.com/detomaso/

  DeTomaso mailing list
  DeTomaso at list.realbig.com
  http://list.realbig.com/mailman/listinfo/detomaso


  -----
  No virus found in this message.
  Checked by AVG - www.avg.com
  Version: 10.0.1424 / Virus Database: 2425/4995 - Release Date: 05/12/12


______________________________________________
Detomaso Forum Managed by POCA
Archive Search Engine Now Available at http://www.realbig.com/detomaso/
DeTomaso mailing list
eTomaso at list.realbig.com
ttp://list.realbig.com/mailman/listinfo/detomaso

_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso


-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1424 / Virus Database: 2425/4995 - Release Date: 05/12/12


______________________________________________
Detomaso Forum Managed by POCA
Archive Search Engine Now Available at http://www.realbig.com/detomaso/
DeTomaso mailing list
eTomaso at list.realbig.com
ttp://list.realbig.com/mailman/listinfo/detomaso

_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso



More information about the DeTomaso mailing list