6 Piston brake question

[luc]

That's not quite true, the piston seal is a seal keeping the bore of the caliper free of contamination, so as not to bind.

The pad retracts as the fluid pressure decreases - neutralizes. Second, a rotor that has run out or as you say is warped. Will cause the pedal to pulsate when the brake is applied.

Sorry but it’s the seal that retract the piston
The seal has a square shape and deform slightly when brake are applied. Once fluid pressure is removed, the seal go back to its original shape and drag the piston back with it

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[paulm1]

could be a bad caliper, you may have a piston(s) starting to lock up. How many miles are on it?

 

[Howitzer]

Have you ever seen the shields on a car equipped with the Brembo?
They are so small that it is almost impossible for them to make contact with the rotor
And, btw, they are not dust shields at all but rather heat shields for the ball joints (on Brembo)

I have the small shields...can confirm they can still be bent to touch the rotor and squeal. I've accidentally done it myself.

 

[Comp550]

I changed the rotors and pads about 5 years ago and they have about 15k miles on them.

 

[txgt]

I changed the rotors and pads about 5 years ago and they have about 15k miles on them.

You ever figure this out?

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