[scion]

I would like to know if someone has had experience with the type of rear disc brakes on the xB? The piston has to be screwed back in when changing brake pads. I believe the parking brake is the reason for the screw type piston, so, how does the piston slide back and forth when you apply the foot brake since the piston is a screw type?

What happens when to the piston when you apply the hand brake? Does it screw the piston tight against the rotor and unscrew it when you release the hand brake?

I just don't see how the piston can slide back and forth like the front brakes and screw in and out with the hand brake.

I could find anything in the search.

Thanks.

 

[mountscion85xb]

Auto Zone or any parts stoore should have the rental tool you need

 

[zembonez]

Basically the piston ratchets past a detent when the pads wear. It keeps the piston in close proximity to the pad and minimizes the distance the piston has to move when you step on the brake. It does not unscrew really... you jut screw it back in when the new pads are installed so that it can work all over again as they wear.