Originally Posted by
onehundred80
Not true I think, the brake system is two separate systems, front and rear. The failure of one does not cause the failure of both, it is a mandated safety feature. The master cylinder has two pistons to achieve this feature. The pistons are possibly separated with a spring between them, one brake system operates first and when the spring is compressed the other piston moves and the other brake system activates. I guess the rear comes on first, not sure though. I studied this a while back but I cannot swear the system we use has one dual or two separate pistons. The systems are similar in other aspects though.
If the pedal goes to the floor then I assume that there is another fault as well as the reservoir has a partition separating the fluid in the reservoir into two sections, the front and rear.
That sounds like it would make "old school" brake bleeding an all day.. pack a lunch.. affair..
