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Old 05-12-2003, 04:26 AM   #1 (permalink)
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kung fu brake upgrade HELP needed

for those of you not familiar with this here is the skinny: i replaced my master cylinder with a master cylinder from a 98' dodge 3500 pick up, and while i had it apart i got rid of all the abs crap ,and the proportioning valve plumbing directly to the master cylinder .. i also got the bright idea to replace the booster because i had a new tj booster lying around but while the side toward the master cylinder are the same the rod that hooks up to the pedal is longer so my brake pedal is way high , so that will need to be put back the way it was.anyway the problem is this my brake pedal is hard as a rock and will just stop the truck.i know the lines are all clear because when i bled them i coulda drown in brake fluid under there. ( the person pumping the pedal was a litlle overzealous) i checked the booster and it is indeed pulling . i think it has something to do with the bleeding process, but any help is appreciated of course


joe
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Old 05-12-2003, 04:59 AM   #2 (permalink)
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If I understand you correctly. I think your push rod is just too long although this does not make sense. I have TJ and I replace my MC with a dodge 3500, I need to make a space lengthen the push rod. HTH.
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Old 05-12-2003, 06:40 PM   #3 (permalink)
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i was wondering if maybe i had put too long of a spacer in there too. i think tomorrow i'm going to replace the booster with my zj booster to improve the angle on the brake pedal and while i'm at it i'll shorten up the spacer a hair.

joe
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Old 05-12-2003, 06:57 PM   #4 (permalink)
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The length of the spacer is critical... it is a pain in the ass to get it right.. but well worth it. do a search on my original posts on the dodge 3500 conversion..
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Old 05-12-2003, 07:33 PM   #5 (permalink)
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does the rod( including spacer) have to be touching the master cylinder or should there be a little space? what i did was went to the hardware and bought a stud with the same thread patern as the little adjustment screw in the booster. i then bought a cap nut to fit in the M/C recess. them i just adjusted it out until it was just touching the master cylinder when bolted up. so shoul i have left a little gap in between my rod and the master cylinder? like this

---------)
or like this--------- ) ????????
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Old 05-12-2003, 07:43 PM   #6 (permalink)
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Quote:
Originally posted by jeepraiderjoe
does the rod( including spacer) have to be touching the master cylinder or should there be a little space?
I set mine so it was just barely touching.. but not putting any pressure against it.. it works fine.
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Old 05-12-2003, 07:50 PM   #7 (permalink)
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i'm really hoping it is a problem with the angle of the pedal due to the fact the tj booster has a longer actuator rod because right now the pedal is really high so i think i'm having to push down a little bit thereby losing some of the mechanical advantage of the pedal. i read somewhere the pedal should be within 5 degrees of parallel to the actuator rod and i'm nowhere near that
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