Goodlet
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further p.s the piston in the MC can be seen to move with the reservoir cap off and the fluid is spotlessly clean at the MC i think that the relief port is open but it is difficult to be sure. the pedal rod is coorectly adjusted.
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thanks to all my respondents. Sorry for the late reply background: it happepend on the first test drive afterthe rebuild . the pedal got harder and harder until the car wouldnt move. The pedal has eased off since and the car was able to be driven up my driveway off the low loader .brakes are still 'on' though further background: the climate in joburg is desert ie dry hot and 6000ft high altitude. (perfect rust free climate) i have aworkshop manual. Ithink what i want is to know if this is an adjustment problem or must i rebuild thewholr system (which has just been done)
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thanks will try this b ut before dis assembling are you able to advise which way the flow of the end valve is? many thanks
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Problem: The car cannot be driven because the brakes lock on after a few presses of the pedal. I've put new rubbers in the drums and master cylinder. I believe the problem is related to the return valve in the master cylinder but after adjustment per the manual the pressure release port is still inoperative although after much adjustment the port opens but not at the time it should. Can anyone help me understand what's happening here and how to fix it? Thanks!
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1948 Plymouth Special Deluxe Master Cylinder problems
Goodlet replied to MattWalker's topic in P15-D24 Forum
after sending my P15 to a brake shop,for a master cylinder and drum rebuild ,My brakes have locked on (needing a tow home) i have not the confidence that they can (or want) to fix the problem.so i want to do this my self. the problem (I think) is the relief valve which keeps fluid in the pipes etc when the pedal is released. The instruction book says that this is a simple job to fix (you adjust three phases of the pedal travel numbered A loose , B take up C Action, I have done this but no luck. the manual says that the relief port should squirt fluid but it only does this when the other measurement are wrong and still the brakesxare locked solid.