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Car Forum / MINI / July 2004brake sevo
Hi everyone. Just for fun i decided to take apart the servo on my innoicenti cooper, and was rewarded with brake fluid pouring out from the servo the moment i loosened the screw holding the big circlup in place.... Should the servo fill with fluid? The big diaphragm is in sound condition as appears to be the air valve (also some fluid, little round thing with 5 screws???). Any advice? > Should the servo fill with fluid? Definately not. Your master cylinder needs an overhaul. Hi, There should be NO fluid inside the servo. It is almost certain that the seals in the servo hydraulic cylinder have failed, allowing fluid to leak out into the servo chamber. If the main diaphragm had also failed, there would have been copious amounts of white smoke from your exhaust. I believe you can obtain a repair kit for the hydraulic cylinder without all the other vacuum parts, although it would be a good idea to replace all these parts as well. I suggest you contact your local auto parts factor, who should be able to obtain a kit for you. keith > Hi everyone. > [quoted text clipped - 8 lines] > > Any advice? As Jeroen said ,, the Master cylinder seals have failed,, you forgot to mention how much brake fluid you have been putting in, Personally though, I would just fit a replacement cylinder Fitzy > Hi, > There should be NO fluid inside the servo. It is almost certain that the [quoted text clipped - 21 lines] > > > > Any advice? Thanks for all teh replies!! When you mention the master cylinder are you referring to the one master cylinder proper i.e. teh one fitted to the bulkhead crossmember or to a section of the servo? I haven't been using a lot of fluid, almost none at all actually. just the brakes always felt a bit spongy despite all the bleeding :-). the car stops just that it felt as if the servi wasn't doing as much as it should Cheers Check the servo,, make sure it's working, switch off the engine,, pump the brake pedal 3-4-or 5 times until the servo is exhausted, keep the brake pedal pressed down, and start the engine, if the servo is functioning ok, you will feel the pedal move under your foot, Fitzy > Thanks for all teh replies!! > [quoted text clipped - 8 lines] > > Cheers
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