brake caliper problems!

[thejake456]

I have a '85 cr250 and the front brakes have been acting up.

i put new pads on them and it needed new fluid. then after i did that i tried to put the caliper back on the rotor and then i tested them to see how they worked. i pumped them a few times and when i went to push the bike the weel wouldnt move.

i then figured out that the pistons that compress the brake pads wernt realing the whole way.

So i was wondering if there was a way to lubercate the pistons?

 

[wileyE]

check the 2 slider pins, often an over-looked part of brake maintenance

 

[Jasle]

also when the pistons are out, like when you pads are worn, you can get rust build up behind the piston and when you squeeze the pistons back in for new pads they bind up. you end up having to pop the pistons out, clean the caliper and o-rings, and then reassemble and bleed the system. makes for a good time to change your brake fluid since most people don't change it every year like they should.