[COUPERS-TECH] Brakes

[Ed Granato]

2 days ago I repeatedly bled My Hayes brakes and went thru several rounds of pumping untill all the air was out of the system..  Despite my best efforts,  I was unable to generate enough pressure to stop the plane from rolling.  There are no leaks in the sysytem.  The master's seals were rebuilt three landings ago.  I can only assume that the mechanic failed to check for wear on the inside of the master and/or failed to pressure test it.  The expansion tubes are not leaking and the brake pads seem to be good.  Luckily I found someone who has a master cylinder for Goodyears after serial number 817.  My plane has serial number 755.  I just want to make sure that this is compatible before sending for and rebuilding the master.