[DeTomaso] Brake bleeding issue learned

Pantdino pantdino at aol.com
Sun Aug 16 20:44:30 EDT 2020 

Over time the rubber in brake hoses swells until there is very little or no lumen, so fluid has a hard time getting to or coming back out of the caliper.  The ones on my Dino had no visible lumen when cut for evaluation.

-----Original Message-----
From: Asa Jay Laughton via DeTomaso <detomaso at server.detomasolist.com>
To: detomaso at server.detomasolist.com
Sent: Sun, Aug 16, 2020 2:34 pm
Subject: Re: [DeTomaso] Brake bleeding issue learned

  When did brakes on 5533 the very first time, because the left front
  would lock up and not come undone quickly, I found something similar.
  In my case the rubber hoses had deteriorated (along with fluid that was
  who knows how old) and built up a thick black tar that wasn't too
  difficult to depress with the brake pedal, but it wouldn't so readily
  slide back.
  I evacuated the entire system of fluid, remove the old rubber lines and
  replaced them with some stainless overbraided once from Pantera
  Performance Center. Then I had a kind soul send me a set of recently
  rebuilt calipers and I was on my way.  I later performed caliper
  rebuilds on my own. And somewhere along the way I gave away a set of
  calipers.
  Asa  Jay
Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
Spokane County ARES-RACES-ACS EC/RO
******************************
[1]https://w7tsc.org
[2]https://www.teampanteraracing.com

  On 8/16/2020 09:51, Rich Hoppe wrote:

  I am sending this to the group to build the knowledge base.
  I am working on my daughters restoration.
  I have a new brakes system.A  Everything.
  It has been in the car without fluid for a couple years.
  I started bleeding the brakes and ran into a problem.
  I would get one squirt of fluid out the back brake calipers and then
  stop.
  I would try again after a while and got one squirt again.
  What I found out was the master cylinder adapter had some kind of
  grease or something on the piston that would not let the master open
  back up quickly.A  It would come back slowly.
  The front worked because the master starts putting fluid to the front
  wheels and then to the back.
  When you look into the aftermarket master you can see three holes in
  the bottom.
  The front goes to the rear brakes the rear goes to the front.
  Then a third hole you can see closest to the master.
  You can actually watch the plunger do its thing.A  when I looked in I
  could see it move slowly back when the peddle was already up.A  So I
  took the adapter off and found the goo that was bumming up and causing
  the problem.
  Maybe I am the only one that will have this problem but probably not.
  FYI
  Rich Hoppe


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References

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  2. https://www.teampanteraracing.com/
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-------------- next part --------------
   Over time the rubber in brake hoses swells until there is very little
   or no lumen, so fluid has a hard time getting to or coming back out of
   the caliper.  The ones on my Dino had no visible lumen when cut for
   evaluation.
   -----Original Message-----
   From: Asa Jay Laughton via DeTomaso <detomaso at server.detomasolist.com>
   To: detomaso at server.detomasolist.com
   Sent: Sun, Aug 16, 2020 2:34 pm
   Subject: Re: [DeTomaso] Brake bleeding issue learned
     When did brakes on 5533 the very first time, because the left front
     would lock up and not come undone quickly, I found something similar.
     In my case the rubber hoses had deteriorated (along with fluid that
   was
     who knows how old) and built up a thick black tar that wasn't too
     difficult to depress with the brake pedal, but it wouldn't so readily
     slide back.
     I evacuated the entire system of fluid, remove the old rubber lines
   and
     replaced them with some stainless overbraided once from Pantera
     Performance Center. Then I had a kind soul send me a set of recently
     rebuilt calipers and I was on my way.  I later performed caliper
     rebuilds on my own. And somewhere along the way I gave away a set of
     calipers.
     Asa  Jay
   Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
   Spokane County ARES-RACES-ACS EC/RO
   ******************************
   [1][1]https://w7tsc.org
   [2][2]https://www.teampanteraracing.com
     On 8/16/2020 09:51, Rich Hoppe wrote:
     I am sending this to the group to build the knowledge base.
     I am working on my daughters restoration.
     I have a new brakes system.A  Everything.
     It has been in the car without fluid for a couple years.
     I started bleeding the brakes and ran into a problem.
     I would get one squirt of fluid out the back brake calipers and then
     stop.
     I would try again after a while and got one squirt again.
     What I found out was the master cylinder adapter had some kind of
     grease or something on the piston that would not let the master open
     back up quickly.A  It would come back slowly.
     The front worked because the master starts putting fluid to the front
     wheels and then to the back.
     When you look into the aftermarket master you can see three holes in
     the bottom.
     The front goes to the rear brakes the rear goes to the front.
     Then a third hole you can see closest to the master.
     You can actually watch the plunger do its thing.A  when I looked in I
     could see it move slowly back when the peddle was already up.A  So I
     took the adapter off and found the goo that was bumming up and
   causing
     the problem.
     Maybe I am the only one that will have this problem but probably not.
     FYI
     Rich Hoppe
   _______________________________________________
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   [4][4]http://server.detomasolist.com/mailman/listinfo/detomaso
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   use the li
   nks above.
   Members who post to this list grant license to the list to forward any
   message p
   osted here to all past, current, or future members of the list. They
   also grant
   the list owner permission to maintain an archive or approve the
   archiving of lis
   t messages.
   References
     1. [5]https://w7tsc.org/
     2. [6]https://www.teampanteraracing.com/
     3. mailto:[7]DeTomaso at server.detomasolist.com
     4. [8]http://server.detomasolist.com/mailman/listinfo/detomaso
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
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   [10]http://server.detomasolist.com/mailman/listinfo/detomaso
   To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

   1. https://w7tsc.org/
   2. https://www.teampanteraracing.com/
   3. mailto:DeTomaso at server.detomasolist.com
   4. http://server.detomasolist.com/mailman/listinfo/detomaso
   5. https://w7tsc.org/
   6. https://www.teampanteraracing.com/
   7. mailto:DeTomaso at server.detomasolist.com
   8. http://server.detomasolist.com/mailman/listinfo/detomaso
   9. mailto:DeTomaso at server.detomasolist.com
  10. http://server.detomasolist.com/mailman/listinfo/detomaso

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