olie05 Posted March 2, 2006 Share Posted March 2, 2006 Hello... You may recognize me from my recent thread, "help brake feel is not what i want." ok... well now I'm curious. Why did the brake feel the way it did? ok heres a diagram: now what i don't understand is the red shaded area. That is where there is a spring... the question is... does that red shaded area get filled with fluid? and if it is supposed to get filled with fluid, if it somehow is filled with air, will it cause only the front brakes to work well? also, how does fluid get into the red and blue areas? the green and yellow areas are pretty obvious... Quote Link to comment Share on other sites More sharing options...
kcelectronics Posted March 2, 2006 Share Posted March 2, 2006 Quote Link to comment Share on other sites More sharing options...
olie05 Posted March 3, 2006 Author Share Posted March 3, 2006 thanks! that explains a few things. Quote Link to comment Share on other sites More sharing options...
TheNeedForZ Posted March 3, 2006 Share Posted March 3, 2006 I can't see the pic kcelectronics posted... Quote Link to comment Share on other sites More sharing options...
zcarnut Posted March 3, 2006 Share Posted March 3, 2006 There are two ports from each reservoir container to the master cylinder bore. The smaller front port (the “pressure portâ€) supplies fluid to the pressure side of the seal (red and blue areas) and the larger rear port (called a “compensating portâ€) feeds the volume behind the seal (yellow and green). You need to supply fluid to behind the seal so that you do not cause a vacuum to form behind the seal when the pushrod is moved to the left in the above diagram (i.e., when the brakes are applied). When the pushrod is moved to the left the seal quickly covers the pressure port so that you will build pressure in front of the seal. When you release the brake pedal the fluid behind the seal needs to quickly return to the reservoir, hence the rear port is much larger than the front. Quote Link to comment Share on other sites More sharing options...
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