As far as I know, this applies to all cars regardless of manufacture. If the piston in the caliper is a hollow cup, it pushes in. If it is solid with a flat surface and some sort of design or a groove in the face it turns in to compress.
How do you compress the rear brake caliper pistons to install new pads on vw polo 08 model?Read more: How_do_you_compress_the_rear_brake_caliper_pistons_to_install_new_pads_on_vw_polo_08_model
How do you compress the rear break caliper, pistons on a 2002 Sierra ?
Unlike the front calipers, pistons in the rear usually have to be rotated to compress them.
I just changed my rotors and pads all the way around. The front pistons compress (used a C-clamp). The rear pistons screw clockwise back into the caliper. Good luck, I hope this helped. Rob in Idaho
rear brake pistons are called actuated pistons. And the twist in and out. You will need a special tool to twist them back into the caliper. Unlike the Front Pistons which can be pushed back.
You need a tool mostly used on ford cars that turns the piston while pressing it.
No need to rotate the front caliper pistons as you compress the front calipers. That process is only for the rear calipers because of the parking brake mechanism.
On the back calibers you have to screw the pistons in they don't compress in, you can ruin them if you try. They sell the square tool for a couple of bucks.
I have used a large "C" clamp, to compress the caliper flush to the face.
I just did mine. Use a screw driver to press the brake pads away from the rotor and compress the caliper pistons back some so you can remove the caliper off of hte rotor. Losen and remove the bolts to the brake caliper. DO NOT DISCONNECT the brake line from the caliper! Get you a c-clamp and a piece of 1/4 board about 4 inches long. Once you have removed the caliper from the mount and removed the brake pads support the caliper with one hand. Place the wood over the caliper pistons and using the c-clamp place it over the wood and center of both pistons and other side of caliper to compress the pistons back into the caliper. Make sure you DO NOT PINCH the rubber boots on the pistons. Once you have compressed the pistons back into the calipers install your new pads and calipers back on the mounting surface and tighten the bolts back to torque specs.
The calipers should turn back in with a big scredriver or such! you have to rotate the piston to retract them rotae the pistons clockwise with a large pair of pliers
most caliper pistons can be squeezed in with bigg plyers after you loosen bleeder valve