get a large pir of grips and squeeze should go back in.
They need to be wound back in, using a special tool, a G-clamp also work to push it back, with the rotating part on the caliper piston.
There is a 14 mm bolt on back of caliper. Remove this & use a 4 mm Allen wrench to back piston into caliper.
There is a specialty tool for this procedure. There is a metal plate that fits on the piston, then a clamp for the back of the caliper. Turning a screw will pull in the caliper. Opening the bleeder valve may be necessary.
You will need special brake caliper tool such as a C-clamp to push back the piston on the caliper of a 2002 Mitsubishi Lancer.
The Brake Piston Cube is a cube-shaped tool used to retract brake caliper pistons in vehicles when changing brake pads. Its design allows it to fit into the caliper housing and apply even pressure to retract the pistons back into the caliper, facilitating easier brake pad replacement. By turning the Brake Piston Cube, the pistons are compressed uniformly without damaging the caliper or seals.
To compress a caliper piston, you can use a brake caliper tool or a C-clamp. First, ensure the brake fluid reservoir cap is loosened to avoid pressure buildup. Then, position the tool or clamp against the piston and the back of the caliper, and slowly apply pressure until the piston is fully retracted. Be cautious not to damage the piston or the caliper during the process.
Use a "C" clamp to collapse the caliper piston. Use one of the old pads across the face of the piston. If you use the clamp on the bottom of the piston it is possible to crack the piston. Using the old pad spreads the pressure to both sides of the piston. That is if the piston is a cup. If it is solid on the face then it screws in, but I believe this type is only used on the rear brakes of cars.
There is a specialty tool for this procedure. There is a metal plate that fits on the piston, then a clamp for the back of the caliper. Turning a screw will pull in the caliper. Opening the bleeder valve may be necessary.
if it is the caliper at the rear u need the special tool to turn the piston clockwise to push in and counterclockwise to pull out
In most cases, no, however if you are having issues getting the piston into the caliper, it may be seized, or it may be a turn in caliper.
you use "C" clamp or a factory tool to force the caliper pistons back into the caliper piston bores witch forces the brake fluid back into the master cylinder. Now you can install the new pads and then reinstall the roter and bolt the caliper back onto the spindle.Be sure to use high temp bearing grease for the wheel bearings.
take the old brake pad and put it back in the caliper and then take a vice big enough to get around the caliper and the inner piston. just press on the vice and it will return, do this till it stops. if it becomes difficult you may need to lubercate the piston and also open the brake reservoir to re leave the pressure. well I hope that helps