Re: Brakes went potty

Posted by HH56 On 2012/10/16 14:23:10

Unless the external leaks are from tubing connections or spillage there is not usually a way out of the master other than into the vacuum side. To have leaked to the ground must mean the master is loose on the vacuum can or the gasket between the two is pretty much destroyed somewhere leaving a gap.

At any rate the fluid leak into the vacuum side your mechanic mentioned has apparently grown bigtime. The relief port must also be totally blocked for so much of it to have wound inside to cause smoking. The vacuum side must be pretty full for the power piston to displace enough for it to get high enough & reach the workings to get sucked thru.

I don't believe any of the ordinary rebuild kits have anything for the vacuum side and it sounds like there may be some work needed there. At the very least a check and cleaning of the inner works so brake fluid doesn't get sticky and bind things up.