Brake caliper piston

[Merritt5]

Originally Posted by GregWeld

The brake pads should always be "pretty close" to engaged but without any pressure on them whatsoever.... Generally to get the pucks to retract you have to PUSH THEM back. There's also puck knock back, but that's another issue.

Be certain you're not looking at a single sided brake system where only the one side actually has moving parts -- the other side is "fixed" -- when the brakes are applied only one side of the caliper actually "works" and just pulls the other fixed side into the rotor and then they clamp. Perhaps what you're seeing is ONE side moving and the other side just "relaxing" without any pressure being applied?

Never heard the term single sided brake system before, but it is a stock 94 mustang caliper. So only one piston and its on the inside.

I know the piston should retract a little once you let off the brake, but this one was retracting 100%. You could watch the piston move back and forth with each push of the pedal.


Anyways it seemed to fix itself, I've just never seen that before and was curious if anyone else has.



Merritt