Its a 2000 cr 125
i am recently changing my rear break pads but in order to fit the new ones on i need the piston on the caliper to move back into the caliper body so i can install the new and much thicker break pads.
the problem: i cant get the piston back into the caliper far enough to make room for the new ones.
I tried pushing and twisting it back in but it wont budge.
What do i need to do?
Thanks alot
and i took the bleeder pin out and pressed the rear brake and brake oil came out of the bleeder hole.
I think i may have to add new brake fluid... but is it possible i pumped the piston too far out??
thanks alot guys
Dirt Bike: Rear brake Caliper and Piston Problem.?
with the caliper off,place the old pad in place,then take a %26quot;c%26quot; clamp and position it over the old pad and the caliper,turn the handle on the clamp so that it pushes the piston back into the cylinder.
tighten the bleeder back up and install the caliper'
you will probably have to bleed the system since you already introduced air into the line
Dirt Bike: Rear brake Caliper and Piston Problem.?
Both the answers above me are right. A little tip to make the cylinder go back easier is to take a small nylon bristle brush (like an old toothbrush) squeeze the brake lever (or pedal depending on what end you're working on) and pump the cylinder out a little bit. Use some new brake fluid on that brush and give it a good scrubbing. Rotate the cylinder little by little scrubbing all the way until it's clean, that way you won't be cramming grime and dirt into the seals when you push it back to make room for the new brake pads.
MadDog is right.
I use C clamps. they often take a lot of pressure to get them back in. I suck the fluid out of the master cyl before I do brake jobs because when you push the piston all the way back the fluid has to go some where and oftem it goes out the master cyl. I also change my brake fuid every three years on my motrorcycle brakes.. I suggest you do that too. Saves the life of the piston.
