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Odd brake behavior W123
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09-09-2016, 10:15 AM
rocky raccoon
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Join Date: Oct 2007
Location: Greater Metropolitan Beaverdam VA
Posts: 2,877
The air side of the piston sees atmospheric pressure whereas the fluid side sees pressure exerted by the brake pedal. If the fluid is on both sides of the piston, brake pedal pressure cannot transfer to the wheel cylinders.
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