Miles Posted August 25, 2002 Share Posted August 25, 2002 I recently installed a new Master cylinder on a 72 240Z. There appears to be a leak at the fitting of the rear brake hard pipe where it is attached to the MC or at the large nut where it screws into the bottom of the MC directly under the reservoir for the rear brakes. I can detect fluid between the large nut and the main body of the MC and, over a few days, fluid builds up around the fitting for the rear brake line where it screws into the large nut. I assumed being a new MC they would have properly tightened that large nut at the facory. I have the rear brake fitting that bolts to the MC as tight as I can get it with out risking stripping the threads. I thought of pulling the MC and tightening the large nut the rear fitting screws into. I was also wondering if there may be a problem with the fitting that screws into the MC. Is it ok to put plumbers tape on the threads? Should I go buy a new hard pipe and fitting? Thanks Miles Quote Link to comment Share on other sites More sharing options...
Mike C Posted August 26, 2002 Share Posted August 26, 2002 I'd take it back and get another one. Beauty of having new parts and a receipt! The brake fitting seal is a flare fitting. There should be ZERO fluid getting past this to the threads so telfon tape is not the answer. (This doesn't keep fluid from leaking past the tube through the center of the fitting anyway.) Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted August 26, 2002 Share Posted August 26, 2002 And don't forget that brake fluid eats paint. You should see where I got some and forgot about it. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.