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1984 TransAm proportining valve

  
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1984 TransAm proportining valve

 
waxandgo2004 waxandgo2004
New User | Posts: 1 | Joined: 10/09
Posted: 10/20/09
04:19 AM

rear brakes would not bleed. after replacing the both wheel break cylinders, disassembling the rear break lines and them being free from obstruction replaced the master cylinder. after not getting fluid to the rear moved on to the proportioning valve. disconnected the rear line and depressed the break, nothing coming out of the line, tested the electrical going into valve, there was current present and somehow while the break line was off my son pushed on the pedal and out comes the inside valve on to the ground but i got fluid coming out.  now my problem is when re-installing the valve into the housing i cant get fluid to the rear breaks but it does come out of the valve opening? any suggestions  

 
Pontiacman8 Pontiacman8
Guru | Posts: 1629 | Joined: 02/08
Posted: 10/20/09
05:35 AM

I don't know about the ball coming out but if the p-valve is causing the problem you may have to bleed the heck out of the front brakes and this should cause the check ball to roll back in it's proper place.  
professional hi-performance engine builder

Horsepower sells engines and torque wins races

 
waynep7122 waynep7122
User | Posts: 78 | Joined: 08/09
Posted: 10/23/09
10:21 PM

when one side looses pressure...  the valve will slide and close off the leaking side...

i am looking for the information...

for everybody else who needs a new proportioning valve.. this page seems to have a great selection

http://www.piratejack.net/Proportioning-Valves.html


the big thick manual says you need to depress the rubber covered little plunger tip to bleed the brakes

here are a few pictures of the J-23709    

http://www.thefind.com/cars/info-proportioning-valve-depressor

if looking at the above link  be sure to look for the J-23709   it is easily copied...


the one i have seen is a slotted chunk of steel that is bent over and held in place with the hold down bolt..

most of the time... you can just hold the pin in with anything like the end of a tool... when you bleed the brake...

once you get the rears bleed... you will be able to release it... and then open the front bleeders...  or just tromp on the brakes.. and more than likely when the fluid returns... it will recenter the sliding piston...



and more... somebody posted pictures of how to do it with a jeep .. same braking system components..

http://www.offroaders.com/tech/jeep-Brake-system-Bleeding.htm  

 

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