Carefully take the boot out of the caliper with a small screwdriver being careful of the seal underneath. Then put the cylinder back in the boot and replace the whole thing back in the caliper.
Use a C clamp that carpenters use to hold pieces of wood together. Put the solid part of the clamp on the back of the caliper and the screw part inside the piston and tighten the piston back into the bore.
There is a 14 mm bolt on back of caliper. Remove this & use a 4 mm Allen wrench to back piston into caliper.
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.
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.
On the back of the caliper there should be a bolt its a 14mm you take it out and inside there is a bolt also its Allen key you use and Allen key and retract the caliper. it works on all 626 from 1994 till 2002
Use a screwdriver between caliper and front of piston to squeeze piston back, remove caliper via two bolts on rear inside of caliper. Slide caliper away from rotor and support to ensure you don't damage the hyd. hose. Remove pads from caliper, fit new ones same way. re-fit 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.
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
The proper method is how it is described originally below with the removal of the cap on the back of the caliper and turning in the Allen screw which retracts the E-brake adjuster inside the caliper. There are some cars where you rotate the piston itself into the caliper, if you have that type of caliper you need a cheap tool from the parts store which has pins that locate in the holes in the piston and you put a socket on the other end to rotate it. If you use pliers on the caliper piston you will score it and screw up the seal.14yr ASE Certified Technician.AnswerThere is a small bolt in the center of the backside of the caliper. Remove that bolt and you will see a small Allen head screw inside it. Loosen that screw as you apply moderate pressure to the front of the piston.
Use a screwdriver between caliper and front of piston to squeeze piston back, remove caliper via two bolts on rear inside of caliper. Slide caliper away from rotor and support to ensure you don't damage the hyd. hose. Remove pads from caliper, fit new ones same way. re-fit caliper.
To squeeze the piston back inside the caliper, you need to twist and push in on the piston. Turn the piston clockwise with a big screwdriver if you do not have the correct tool to do so. A large prybar works good for this. Eddie
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.