Brake guys, a quick question please, I hate brakes! Options

[Cheapsnake]

I'm bleeding my brakes and find a leak in one of the rear calipers right at the adjuster screw on the outer piston. I pull the caliper off and take it apart and find that there is no o-ring, gasket or other means of sealing the adjuster screw. It's simply a metal to metal fit and I can't imagine that that's enough to seal.

I've got a rebuild kit and there isn't a seal included for that adjuster screw. There is one for the other piston. So what am I missing here? Is there supposed to be an o-ring or something else to seal that screw? Thanks.

Tom

[Cheapsnake]

OK, here's some pics of the adjuster screw in question.


There's a boss machined into the caliper body where the flange of the screw goes (2nd picture), but there is not a recess for an o-ring. You could put an o-ring in there but it would simply smash down and be destroyed as soon as you tightened the screw down. I don't see any other sealing method. It's not like the o-ring setup on the inner side of the caliper.


I'm going to cut a gasket to fit the boss and put it all back together again with a very tight locking screw. I'll check back tonight and let you know how it goes and listen to all the suggestions as to how I REALLY should have done it. (IMG:style_emoticons/default/headbang.gif) Thanks guys.

Tom

[willamp]

When I replaced the rear pads/rotors a while back I encountered the same leak but found the leak only happened when I was backing the adjuster out. When I would start to turn it in to set the venting clearance the leak would stop. It concerned me a bit so I kept my eye on it over the next couple of days and drives but it has never leaked again. Oddly enough this only happened on the right rear. The left one didn't have this leak.