One fine day I decided to replace my brake fluid. Of course, the rear caliper bleeder broke off. I tried everything to remove the broken screw, but being in there for so long, the threads seized up and in the end, drilling and tapping and adding a bleeder repair kit was the end result.

Now a few months later, I notice that there is brake fluid weeping from the bleed screw....not pouring out, but it is wet. I have made it pretty (very) tight and I am afraid that I am gonna break it or strip the aluminum threads in the caliper if I tighten the bleed screw any more. FWIW, when I replaced the bleed screw, I used the recommended sized drill and tap.

My only choice at this point is replacing the rear caliper. Unless, and ere is my question.....

Should I have put any kind of thread sealant on the bleed screw? Blue loctite or some kind of thread lock/sealant?

 

No sealant or locktite is needed. As cheap as calipers are I'd Ebay one, install it and call it good. Sometimes the bleeders get frozen in there but that's usually because nobody ever bleeds the system. I bleed my brakes at the start of the season on my DOT 4 bikes and every two years on my DOT 5 bikes. DOT 5 isn't hygroscopic.

 

^- good advice, you can try teflon tape as a patch but if it is weeping it will prob continue to do so

 

I was looking around the webz and noticed that many bleeder repair kits feature a sealant on the threads. So I grabbed some thread sealant made for hydraulic applications and tried it out.

BTW, I am talking about sealing the threads on the brass fitting pictured...not the actual bleed screw.

 

ah! Teflon tape that sucker and that will work out great!