The rear calipers have a small screw that prevents the caliper from being pressed back into place. If you look on the inside of the caliper (towards the body), you should see a small, 10-12mm brass bolt. Remove it, and underneath, you will find a small Allen-head screw. If you unscrew it, it will allow the caliper to be retracted. Once you've retracted it enough, *lightly* screw the Allen screw back in until it stops. The moment you feel resistance, is enough pressure.
Caliper pistons should retract if calipers are in working order. Calipers need to be removed and rebuilt or replaced. A brake fluid flush is highly recommended.
To retract the rear caliper on a 2006 Hyundai Tiburon, you'll need a brake caliper tool or a C-clamp. First, remove the caliper from the bracket by unscrewing the bolts. Then, using the tool, rotate the caliper piston clockwise to retract it fully into the caliper housing. Once retracted, you can reinstall the caliper over the new brake pads.
The caliper piston may not retract properly due to a lack of lubrication, a damaged seal, or air trapped in the brake system.
You need to turn the piston clockwise and it will slowly retract as you turn.
Use a "C" clamp to fully retract piston into caliper body
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
us Cclamp to retract caliper leave old brake pad in place put clamp over caliper with 1 end on brake pad and the other over caliper back start to tighten very simple.
Use a "C" Clamp to fully retract the piston into the caliper body
To retract a caliper, first, ensure the brake system is depressurized if you're working on a brake caliper. Use a caliper tool or a C-clamp to gently push the piston back into the caliper housing. If the caliper has a screw-type mechanism, turn the screw clockwise until the piston is fully retracted. Once retracted, check for smooth movement and reassemble any components as needed.
The brake caliper may not retract properly due to issues such as a stuck piston, worn out seals, or debris buildup. These issues can prevent the caliper from releasing pressure on the brake pads, leading to brake drag and reduced braking performance.
Double check your rear brakes. Sometimes your self adjusting screw (star-wheel adjuster) is seized, or your wheel cylinder won't retract, or your parking brake cable is seized in the activated position.
To reset the rear calipers on a 1981 Firebird, you'll need to retract the caliper pistons. This can be done by using a special caliper tool or a C-clamp to compress the piston back into the caliper housing. Ensure that the brake fluid reservoir cap is removed to prevent pressure buildup. Once the piston is fully retracted, you can reassemble the caliper and reinstall it on the rotor.