Sounds to me like the master cylinder needs replacing. There is no gasket between the cylinder and the booster. A seal in the cylinder stops the fluid from coming out so it sounds like that has failed. Ken 39Master85w.partscar,67Marlin343,68AMX343,70Machine,73Matador2dht401, 73-74-75-76GremlinXs,75PacerX,76Hornet2dsd,76Matador4dsd,76-77Matadorcpes, 2-77AMXs304,78AMX304,78GremlinGT,78Concordsw,79Concordhb,79PacerDL304, 2-79AMXs304/401,2-80AMXs258/401,2-80SpiritDL304/258,80Eagle4dsdn,3-81SX4s, 81SpiritGT,2-81Concord4dsd,82Eaglesw,2-85Eaglesw,2-80J20/360,85J10,2-88Eaglesw, 94Sentra2dsd (44) AMCA = http://www.amcalberta.ca ----- Original Message ----- From: "Eddie Stakes" <eddiestakes@xxxxxxxxxxxxxxxxxxxx> To: amc-list@xxxxxxxxxxxxxxxxx, BaadAssGremlins@xxxxxxxxxxxxxxx, "peter wittschiebe" <classicgto@xxxxxxxxx> Sent: Sunday, November 2, 2014 2:45:34 PM Subject: [AMC-list] Fw: 1970 AMC Javelin Brake Booster Question leaking between booster & master cylinder Peter has a leakage brake fluid problem question, anyone wishing to reply please copy your reply to him and thanks in advance to all who might reply. Eddie Stakes 713-464-8825 days www.planethoustonamx.com -------------------------------------------------- From: "peter wittschiebe" <classicgto@xxxxxxxxx> Hello, You have helped me in the past and would appreciate some additional information if you can spare the time. On my 1970 Javelin SST, there is a brake fluid leak where the master cylinder is bolted on to the vacuum booster. Before taking them apart, can you tell me if there is a mounting gasket between the two that needs to be replaced? Could this be the cause of the leak? Is it available? Thanks again. Peter _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com