I'd crack one of the brake lines to see if they are under pressure. Is this front and back or only one axle?
-----Original Message----- From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Dieselhead Sent: Monday, December 16, 2013 4:07 PM To: Mercedes Discussion List Subject: Re: [MBZ] Weird brake problem That was the thought process that led me to the master cyl. Nothing changed or adjusted in the pedal or linkage to the Master between worky and no worky. But the symptoms are like when Curt had the too long rod, and brakes would not work right. >The one thing that comes to mind is if the piston in the master >cylinder isn't moving all of the way back (pedal all the way up) the >drilling in the master cylinder that lets fluid in from the >reservoir doesn't get uncovered. This prevents more fluid from >getting in when the system is at rest, and as a result results in a >soft pedal or no pedal at all. > >About the only way this can happen that I know if is if the clevis >for the brake pedal is misadjusted, the pedal isn't coming up all >the way or something is obstructing it, or if there is a burr or >scratch in the bore of the master cylinder that's preventing the >piston from coming all the way up. > >Also, if the rear most cup on the piston is torn I think it will >exhibit similar tendencies. > >Dan > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
