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∙ 14y agoThey are twist in pistons. They do not press in like some that you can use a C-clamp on. There is a special tool I think called a spanner wrench or something like that. If you call an autoparts store they should be able to help you more.
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∙ 14y agoHow 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
most caliper pistons can be squeezed in with bigg plyers after you loosen bleeder valve
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.
How do you compress the rear break caliper, pistons on a 2002 Sierra ?
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
Until they won't go in any farther
Unlike the front calipers, pistons in the rear usually have to be rotated to compress them.
with a C clam , make sure the you use sameting to protec the piston
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.
Remove wheels Re-Install 2 lug nuts to hold rotor in place Remove caliper mounting bolts Slide caliper off rotor Compress piston into caliper body using a "C" clamp (front only) Rear pistons are threaded and require a special tool available at Sears or auto parts (not expensive) to compress piston in to caliper body Replace pads inner and outer Re-Install caliper REMEMBER TO PUMP BRAKE PEDAL TO SET PADS AGAINST ROTOR PRIOR TO MOVING VEHICLE
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.
When installing new pads, push piston into cylinder body by gently turning piston clockwise,with long nose pliers, or suitable tool