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Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2627573 03/01/19 03:38 PM 03/01/19 03:38 PM
Joined: Feb 2004 Posts: 240 Spring City , Pa. SIKPUP enthusiast
SIKPUP enthusiast Joined: Feb 2004 Posts: 240 Spring City , Pa.	I had a time where the front brakes worked so well that it didnt allow enough pedal travel to push the fluid to the rear.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: SIKPUP] #2627578 03/01/19 04:05 PM 03/01/19 04:05 PM
Joined: Jan 2003 Posts: 32,907 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,907 Grand Prairie,Texas	Originally Posted By SIKPUP I had a time where the front brakes worked so well that it didnt allow enough pedal travel to push the fluid to the rear. what you had was a misadjusted master cylinder pushrod or bad mc. The situation you described should not happen.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2628225 03/03/19 12:51 PM 03/03/19 12:51 PM
Joined: Oct 2004 Posts: 2,806 Connecticut FurryStump master
FurryStump master Joined: Oct 2004 Posts: 2,806 Connecticut	I had the same type of issue on a rebuilt mc from advanced auto. There are two Pistons separated inside by a spring. The spring keeps the spacing between the Pistons the correct distance, but with mine the Pistons were chewed up and would stick and not allow the spring to correct the spacing. So it would just block one port and allow no pressure out. Felt just like you put plugs in the ports. ROCK hard. best of 11.39 at 117 mph 1.60 60’. 68 340 S Barracuda Fastback F.A.S.T [IMG]http://i67.tinypic.com/2mnnnnt.jpg[/IMG]

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2628761 03/04/19 05:05 PM 03/04/19 05:05 PM
Joined: Jul 2013 Posts: 459 las vegas,nv M mopar muscle7271 OP mopar
mopar muscle7271 OP mopar M Joined: Jul 2013 Posts: 459 las vegas,nv	Well got i no fluid what so ever goin to back of car.i started at m/c took lines off there and pump the pedal and fluid was squirtin out of both ports on master cylinder.unscrew the line that goes to back to supply fluid and nothing.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: Supercuda] #2628817 03/04/19 07:09 PM 03/04/19 07:09 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Originally Posted By Supercuda sounds like the safety shuttle is tripped. I reiterate They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: Supercuda] #2628821 03/04/19 07:17 PM 03/04/19 07:17 PM
Joined: Jan 2003 Posts: 4,269 Morrow, OH markz528 master
markz528 master Joined: Jan 2003 Posts: 4,269 Morrow, OH	Originally Posted By Supercuda Originally Posted By Supercuda sounds like the safety shuttle is tripped. I reiterate And I agree with the reiteration................ 67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2628890 03/04/19 10:39 PM 03/04/19 10:39 PM
Joined: Jul 2013 Posts: 459 las vegas,nv M mopar muscle7271 OP mopar
mopar muscle7271 OP mopar M Joined: Jul 2013 Posts: 459 las vegas,nv	How do you fix that?

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2628894 03/04/19 10:55 PM 03/04/19 10:55 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	For 71 the FSM says to replace the valve. 73 and later have an external plunger nub you can reset it with. I would take it apart, clean it recenter it and reseal it. I suppose you could pull the switch and try to recenter the shuttle thru that port. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: Supercuda] #2628966 03/05/19 01:40 AM 03/05/19 01:40 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	with the valve been shifted over to the low psi side, with that corrected iirc there was something about slightly opening the high side making it now the low side & bumping the pedal to shift the valve back the other way to center it. Not sure how holding the "pin" valve open plays out with this procedure but others will clarify. I always thought the center valve was strickly an electrical on/off switch (to warn you of a leak on the "low" side) but did not shutoff flow so I learned something on this. live every 24 hour block of time like it's your last day on earth

Re: hard brake pedal and cant get the back brakes to bleed. [Re: Supercuda] #2629156 03/05/19 02:16 PM 03/05/19 02:16 PM
Joined: Jan 2008 Posts: 3,886 Lost and Spaced B bboogieart master
bboogieart master B Joined: Jan 2008 Posts: 3,886 Lost and Spaced	Originally Posted By Supercuda If nothing comes out of the M/C that is your issue. Kinda why I would start at the master. 1st, being you didn't install it, are you sure it is the proper unit? I have mechanical Aptitude. I can screw up anything.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: RapidRobert] #2629184 03/05/19 02:42 PM 03/05/19 02:42 PM
Joined: Aug 2007 Posts: 601 Mass C charge70 mopar
charge70 mopar C Joined: Aug 2007 Posts: 601 Mass	Originally Posted By RapidRobert with the valve been shifted over to the low psi side, with that corrected iirc there was something about slightly opening the high side making it now the low side & bumping the pedal to shift the valve back the other way to center it. Not sure how holding the "pin" valve open plays out with this procedure but others will clarify. I always thought the center valve was strickly an electrical on/off switch (to warn you of a leak on the "low" side) but did not shutoff flow so I learned something on this. I believe to reset the valve the electrical switch must be removed.Open a bleeder on the brake circuit that works and have someone push the pedal down.If the shuffle valve is not jammed or or stuck that should re-center the valve.Install the switch and everything should bleed normally. 1970 Dodge Charger R/T S.E. 1969 Dodge Dart GTS 440 M-Code 1970 Dodge Charger 500 383/4-speed w/A.C.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: charge70] #2629188 03/05/19 02:46 PM 03/05/19 02:46 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	^^^ noted live every 24 hour block of time like it's your last day on earth

Re: hard brake pedal and cant get the back brakes to bleed. [Re: bboogieart] #2629199 03/05/19 03:16 PM 03/05/19 03:16 PM
Joined: Jul 2013 Posts: 459 las vegas,nv M mopar muscle7271 OP mopar
mopar muscle7271 OP mopar M Joined: Jul 2013 Posts: 459 las vegas,nv	If you know to read thats what I did.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2629859 03/07/19 04:44 AM 03/07/19 04:44 AM
Joined: Jul 2013 Posts: 459 las vegas,nv M mopar muscle7271 OP mopar
mopar muscle7271 OP mopar M Joined: Jul 2013 Posts: 459 las vegas,nv	I notice fluid was leakin where the safety trip is.i tried to spray brake cleaner on of the rear ports of portioning valve to see if it would shoot out to the oher side of rear portioning valve hole it didnt.looks like its clogged or jammed up.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2634605 03/19/19 09:37 PM 03/19/19 09:37 PM
Joined: Jul 2013 Posts: 459 las vegas,nv M mopar muscle7271 OP mopar
mopar muscle7271 OP mopar M Joined: Jul 2013 Posts: 459 las vegas,nv	Are the inline tube portioning valves any good? I ended up orderin one form them. Last edited by mopar muscle7271; 03/19/19 09:42 PM.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopar muscle7271] #2634614 03/19/19 09:48 PM 03/19/19 09:48 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Never used their stuff. I always grabbed one out of a Diplomat, just match the rear drum sizing. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: hard brake pedal and cant get the back brakes to bleed. [Re: Supercuda] #2634787 03/20/19 12:00 PM 03/20/19 12:00 PM
Joined: Mar 2005 Posts: 403 Colorado front range B BcudaChris mopar
BcudaChris mopar B Joined: Mar 2005 Posts: 403 Colorado front range	That combination valve is fairly easy to re-seal. I've since ditched it but if I recall correctly, just a teflon and a couple of o-rings I sourced from a hydraulic shop. Off the shelf stuff, at least in the 90's. As long as the housing and shuttle aren't dinged or pitted...

Re: hard brake pedal and cant get the back brakes to bleed. [Re: BcudaChris] #2649704 04/27/19 10:39 PM 04/27/19 10:39 PM
Joined: Jan 2003 Posts: 2,863 middle Tennessee mopower440 master
mopower440 master Joined: Jan 2003 Posts: 2,863 middle Tennessee	I need to re-set my prop valve i believe..How did you go about doing this? I 'think' its not letting fluid to the rears..

Re: hard brake pedal and cant get the back brakes to bleed. [Re: mopower440] #2649711 04/27/19 10:52 PM 04/27/19 10:52 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Just thinking out loud & someone may clarify better if this ain't right. I would crack the line slightly (a bit downstream from the prop valve) on the side that was not opened/leaking & pump the pedal (fast/brief) (till the light goes out) to shift the valve back the other way to centered. live every 24 hour block of time like it's your last day on earth

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