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You can find an inexpensive tool at your local auto parts. This works best.
the caliper needs a special tool. the piston does not push straight in. the spring needs to be released at the rear of the caliper. then using the special tool the piston twists back in to place
be sure to purcahse the tool to "screw" the caliper piston in. If you try to push the piston in on rear disc brakes you will damange the caliper.
It is a tool to reset the piston on rear discs brakes
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
Yes, you need to remove the caliper first, then use the old brake pad and a C clamp to push down the piston of the caliper.
You will need to push the caliper piston back as well as rotated when you are replacing your rear brake pads. The caliper will need to be turned clockwise.
The rear piston has to be turned in, it won't just push in, they make a tool at the parts store that makes it easier, if you have tried turning it in and it won't go you will have to replace the caliper as it's bad.
If it is the front brake use a "C" clamp to retract piston If it is the rear and the parking brake is used by this caliper piston is threaded and a special tool (not expensive) available at Sears or auto parts to "screw" piston into caliper body
the caliper piston turns clockwise to compress,the gm w-bodys are known for bad rear calipers. gmjim
There is a 14 mm bolt on back of caliper. Remove this & use a 4 mm Allen wrench to back piston into caliper.
screw it in turn the piston clockwise and screw it in , only for rear brakes