Re: New Brakes, no Fluid to Rear.....What is going on?
[Re: Plymouth273]
#117223
09/08/08 01:03 PM
09/08/08 01:03 PM
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Joined: Jan 2003
Posts: 27,728 places
79powerwagon
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,728
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Re: New Brakes, no Fluid to Rear.....What is going on?
[Re: Plymouth273]
#117226
09/10/08 05:22 PM
09/10/08 05:22 PM
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Joined: Dec 2003
Posts: 6,717 KY
65pacecar
master
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master
Joined: Dec 2003
Posts: 6,717
KY
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Re: New Brakes, no Fluid to Rear.....What is going on?
[Re: 65pacecar]
#117227
09/10/08 05:52 PM
09/10/08 05:52 PM
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Joined: Mar 2004
Posts: 432 Fort Lee, VA
BattleCruiser71
mopar
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mopar
Joined: Mar 2004
Posts: 432
Fort Lee, VA
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dude, 4BBodies is probably totally right. barring a blockage or gremlins, it's your metering valve. not only can a frozen plunger do it, but there are a series of rubber o-rings inside, if one has been distorted or torn, fluid will leak past when you press the pedal, the plunger will move into rear brake failure position (in your case), lock the line to the rear and you'll have front brakes only which will also result in that incomplete pedal depression you are describing. SO, unless you're in the mood for a poor man's line lock and or a lot of continued head-scratching, get a new metering valve. Service replacements are still available that look identical to originals minus part numbers, I'd tell you where I got my last one but my reciepts and stuff are on a different continent.
I do not believe the problem lies in your pushrod, I am fairly certain they are the same. If it was a little too short you would still get SOME fluid out of the system from either the front or the rear when you pressed the pedal, the depth of travel doesn't make a difference in the pumping of fluid to either half of the system, if it did you would have uneven braking and lose control.
the metering valve is not a bad part to replace anyhow as none of this old crap (said with love) has an infinite life span and brakes are moderately important. Good Luck! -Andy
Last edited by BattleCruiser71; 09/10/08 05:59 PM.
Ole' Ugly, my 1985 Gran Fury. Luke, my 39,000 mile 77 New Yorker, Darth, my 50,000 mile 60 New Yorker.
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Re: New Brakes, no Fluid to Rear.....What is going on?
[Re: BattleCruiser71]
#117228
09/10/08 07:39 PM
09/10/08 07:39 PM
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Joined: May 2005
Posts: 146 California
Plymouth273
OP
member
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OP
member
Joined: May 2005
Posts: 146
California
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Quote:
dude, 4BBodies is probably totally right. barring a blockage or gremlins, it's your metering valve. not only can a frozen plunger do it, but there are a series of rubber o-rings inside, if one has been distorted or torn, fluid will leak past when you press the pedal, the plunger will move into rear brake failure position (in your case), lock the line to the rear and you'll have front brakes only which will also result in that incomplete pedal depression you are describing. SO, unless you're in the mood for a poor man's line lock and or a lot of continued head-scratching, get a new metering valve. Service replacements are still available that look identical to originals minus part numbers, I'd tell you where I got my last one but my reciepts and stuff are on a different continent.
I do not believe the problem lies in your pushrod, I am fairly certain they are the same. If it was a little too short you would still get SOME fluid out of the system from either the front or the rear when you pressed the pedal, the depth of travel doesn't make a difference in the pumping of fluid to either half of the system, if it did you would have uneven braking and lose control.
the metering valve is not a bad part to replace anyhow as none of this old crap (said with love) has an infinite life span and brakes are moderately important. Good Luck! -Andy
Thanks for the information, I really appreciate everyones input. I tried removing the brake line that goes to the Master Cylinder that feeds the rear brake lines, pumped the pedal and still did not get anything out, at the Master Cylinder. This method takes the Proportioning valve out of the equation. Everything on this system is new, lines, MC, Disc Brakes, Calipers, Wheel Cylinder, Hoses etc. With the Brake line removed at the MC, I assume I should be getting brake fluid out at the outlet on the MC.
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