I am changing my disks, pads and hoses, and somethings is strange to me. My rear calipers are disconnected from the brake lines, and I just could not push the pistons back to fit the new pads with enough space for the rotor, even with a C-clamp. It was just impossible. So I checked the repair manual: you have to rotate the piston clockwise as you are pushing it. So did I, with a special tool a friend gave me. It worked just fine and took me about 20 seconds per caliper.

But the pads have a little tab that must fit in the cutout of the piston. Therefore, it is impossible that the piston turns when it comes out.

So can someone explain: Why did I have to turn the piston clockwise as I was pressing it into the caliper, but it will come out straight when I press the brake pedal...

 

Brake or do you need to break something?

 

You're right... Post edited. I am french, that's my excuse.

 

An internal part rotates as it self adjusts so the piston needs to be rotates to retract it fully.

See page 4 (61).
http://www.autoshop101.com/forms/brake06.pdf

See page 14 (326).
http://www.sanjuan.edu/webpages/jaso... Brakes TB.pdf

 

Dwight: you rock. Thanks!

 

You see the right one in the sanjuan.edu link, page 327, figure 18-26
That is the one "we" have.

Drum brakes are old school.....