You have to have a air compressor to do it. Take an air gun and insert it in the hole on the caliper were the brake line goes to it. Then take the piston in one hand and start it in the caliper while you are blowing air into it and the air will push the rubber boot out around the piston as you push the piston in. It is alittle trickey, But that's how you do it.
The front caliper piston may not be retracting properly due to issues such as air in the brake lines, a damaged caliper seal, or a malfunctioning brake hose. These issues can prevent the piston from retracting fully, leading to brake drag and reduced braking performance.
Could be a frozen piston inside the caliper Could be a defective brake hose Could be a damaged (pinched) brake line
You can use a large C-Clamp to compress the caliper piston.
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
replace brake hose they colaspe
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.
Use a screwdriver to lever piston back (between caliper and front of piston). remove caliper, usually two bolts, remove pads from caliper, fit new ones same way. re-fit caliper.
To depress the piston on the front caliper of a 1998 Grand Am using a C-clamp, first remove the caliper from the brake rotor. Place a piece of wood or a thick cloth over the brake pad to protect it, then position the C-clamp over the caliper and the wood. Slowly tighten the C-clamp, which will push the piston back into the caliper housing. Ensure you do this gradually to avoid damaging the piston or caliper.
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 replace the front brake pads on a 2004 Volvo V70, you will need a brake caliper tool to compress the caliper piston. This tool helps to push the piston back into the caliper housing, allowing for easier installation of the new pads. Additionally, a socket set, a torque wrench, and possibly a brake cleaner are recommended for the job.
Your caliper needs replaced. The piston inside is corroded, and is not releasing. The new caliper costs about 24 bucks at the part store. Hope I could help.
There are several different front brake calipers for the Saab 900 depending on the year. The first is from 1979-1987 and is the same as that on the Saab 99 beginning in 1975. You need a special tool to rotate the caliper piston back into place because the front caliper also acts as the parking brake. From 1988 thru 1993, the front calipers on the Classic 900 are the same as those on the Saab 9000. The NG 900 has a completely different brake caliper setup beginning with the 1994 model.