TR6 TR6 rebuilt the Front Calipers, second time

[hondo402000]

well a few weeks ago, took the TR6 out for a spin, down the hill I go and hit the brakes, and crap, almost no brakes but pulled hard to the right, so I knew something was wrong with the front left brake, got back to the house and pulled the FL wheel and pad out, they were saturated with brake fluid, check the MC and down a little, so I ordered a new rebuild kit and new pads, so yesterday rebuilt the front calipers. Now looking thru my paper work I rebuilt the fronts 3 years ago, using new SS calipers from TRF and new kits. When I got the calipers apart and pulled the rubber seal off the piston lots of fluid in there. Got the pistons out, nothing unusual, pulled the rubber ring out and noticed rust behind the o ring. Could this have been the cause of the leak??? Well I got my dremmel too and a small wire wheel and cleaned the groove well and reassembled the caliper and put the LF back together, well I thought should I check the RF? so I did and noticed the same saturated brake pad, so pulled the RF caliper off and same suituation, rust behind the o ring, actually the sealing ring is round but square edges. clean the groove and reassembled. I have never had a caliper on any car I drove in my life that has leaked like this. Has anyone else experienced a brake caliper leaking.

 

[prb51]

Hondo,
I rebuilt my RF (TR3) the other day. The leak was slight and I probably caused it myself when refitting new discs (pushed the piston in too far I think and upset the outer dust cover allowing dirt in).
I'd be concerned about the rust (brake lines, master cylinder?) as the rust (if there is a lot of it) particles can break the seal of the inner/outer rubber thru abbrasion.
I'd bleed the system thouroughly to remove the rust contaminates and have fresh fluid in place.

 

[hondo402000]

well my MC was new and I flushed all the lines out so at this point we will see what happens