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05-27-2008, 06:54 PM
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#1 |
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Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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Rear brakes
'81 Silverado 1/2 ton 2 w/d.....The rear resevoir on my master went dry due to leaky wheel cyl. Cleaned everything up, replaced the parts, now can't get the rear lines to bleed out air. At least the fluid is not lowering after about 4 or 5 attempts. Am I not giving it enough time, or do I have to bench bleed the master cyl? Thanks..........
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05-27-2008, 08:37 PM
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#2 |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Rear brakes
You probably have the proportioning valve "popped". It is a saftey device that cuts the pressure to the leaking side. That way you still have some brakes. Is the brake light on?
Try opening a bleeder to the front brakes and pushing the pedal. When it hits the bottom there should be a "click". That is the valve moving back to center. Open both rear bleeders at that point and allow the system to "gravity bleed". Just be sure that the master cylinder stays full as the fluid runs down. |
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05-27-2008, 08:43 PM
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#3 |
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Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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Re: Rear brakes
Do I "weigh" the pedal down? Or will the system gravity bleed w/ the pedal up?
Thanks for your advice........... |
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05-27-2008, 08:53 PM
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#4 |
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the pollock
Join Date: May 2008
Location: abilene, texas
Posts: 4,423
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Re: Rear brakes
i used a hand bleeder during my axel swap, i left tthe lines disconnected to long so i drained the whole system out like a retard..
so get a hand bleeder and bleed it out it'll take a minute but it worked for me
__________________
Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042 |
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05-27-2008, 10:47 PM
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#5 |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Rear brakes
It will just run out one it's own. It takes a while, so don't forget it and let the master cylinder run dry.....or you are starting over.
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05-27-2008, 10:56 PM
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#6 | |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,316
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Re: Rear brakes
Quote:
and yes when you change a master or it runs dry its got to be bench bled
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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05-27-2008, 11:38 PM
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#7 |
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Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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Re: Rear brakes
Thank-you to ALL for your advice. I will remove the master and bench bleed it. That makes a lot of sense to me now. I bought a "one man brake bleeder from NAPA. It's a neat little check valve w/ vinyl tubing you attach to the bleeder screw. You press the pedal air/fluid exits, when you release, air cannot re-enter.
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05-27-2008, 11:57 PM
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#8 |
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Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,316
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Re: Rear brakes
ive used them again make sure you dont let air in the top you have to keep the master full
welcome to the board and if ya can please post pics of your ride
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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05-28-2008, 03:45 AM
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#9 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Rear brakes
Quote:
If you forget it..... it will run dry, and you will be starting over. |
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05-28-2008, 03:54 AM
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#10 |
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Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,316
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Re: Rear brakes
yeah i guess i read it wrong it is right what longhair said just dont let the master run dry
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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