If you want to be sure the thing stops as it should, get a replacement caliper.
You COULD also just replace the boot. I think that's a bad plan, though as the bore may have been already damaged. Anyway, to replace the boot, get new pistons seals and boots. Blow compressed air into the hole where the hose connects to push the pistons out. Then, use a flat bladed screwdriver to remove the boot and a curved pick to remove the seal. Installation is the reverse etc.
If you are a mechanic and want to make enough money to pay your rent, ignore the ripped boot and move on to the next car.
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.
The teves caliper is a single piston disc brake caliper and the akebono caliper is a dual piston disc brake caliper. The teves caliper is a single piston disc brake caliper and the akebono caliper is a dual piston disc brake caliper.
If the piston has come out, the caliper will need replaced.
Could be a frozen piston inside the caliper Could be a defective brake hose Could be a damaged (pinched) brake line
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.
on a mazda3 rear caliper there are two dimples in the piston, you can use needle nose pliers to turn the piston while you push on it, or you can rent a caliper compression tool from a local auto parts store, if there is a harbor freight in your area you can buy the tool for around $20. using a c clamp will damage the caliper, it has to have pressure and rotation to be compressed
Possible reasons: 1)You'll have to check, but some calipers have to be turned in like the cap on a bottle of soda. Others have to be pushed in while being turned. 2)The caliper is not seeded correctly meaning that it is not going in straight. 3)The caliper is seized up, meaning that there is something between the piston and wall keeping it from moving. Rust maybe. If the boot around the caliper is torn then this is probably the case. 4)It's unlikely, but on the inside of the walls of the caliper there is a seal, if the seal is damaged then it might keep the caliper from being pushed or turned in.
You can use a large C-Clamp to compress the caliper piston.
Remove caliper mounting bolts Slide caliper off rotor Use a "C" clamp to fully retract piston into caliper body If parking brake is used on this caliper piston is threaded and a special tool (not expensive) is required to thread piston into caliper body
Dual piston caliper, 85 ft lbs. Single piston caliper, 37 ft lbs.
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
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.