Front brakes were very easy to ease the pressure on the caliper, but the rear brakes have the srping assembly for the emergency brakes. I am having a problem releasing the pressure with the bleeded valve open and releasing the pressure so I can fit the caliper over the new brake pads
Replace caliper with old brake pads put 1 bolt in place to hold together while taking a large screwdriver and prying caliper piston so that it compresses piston & block wedge to rear of bracket it should make enough room to install on new brake pads, the other way is to use a large c clamp put 1/4 pice of wood in between c clamp and caliper so you don't damage or Mar the caliper also check YouTube.
SOURCE: rear brakes on 1998 mercury sable
I've done it and hated every minute of it.
Get a quality brake piston rotator tool. The Autozone 5 sided cube is no good.
you will have to spin the piston back about 4-5 turns until it fully retracts.
The expanding/ 500lb pressure clamps do no good b/c the brake is like a hydraulic screw. You can't compress this type of brake.
Starting the rotation of the piston back will require two people
1 to hold the tool and ratchet on the piston, the other to turn the ratchet.
Sounds like it may be a defective brake fluid level sensor on the master cylinder.
SOURCE: replacing caliper on 1997 sable, how do I disconnect emergency brake line from caliper?
The cables usually use a groove and hook system where the Emergency brake cables slide into the hook of the fixture on the Caliper. The assembly must be turned almost 90 degrees to slip the fixture into and out of the channel.
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