there are two ways caliper pistons are made, one you can just use a c-clamp to push the piston back into the caliper; the other piston type must be screwed into the caliper with a special tool (inexpensive and readily available at your local auto parts store), but i must warn you, this "screw type" is very annoying to deal with, sometimes you have to start screwing it in with a pair of channel lock pliers b/c the tool wont fit in the caliper until the piston is most of the way back into the caliper, but be careful not to scar the outside of the piston and not to break or tear the seal
some model's that have the parking brake Incorporated into the rear caliper, you must compress and turn the piston until the proper clearance is obtained.
Chances are when a brake caliper wont compress it is the type that must be turned and compressed at the same time and requires a special tool that you can borrow from a local chain auto parts like Auto Zone. That was the case on my 96 Buick Riveria rear disk brakes. Hope this helps.
Chevy came up with the brilliant idea of turn in calipers a number of years back. Check the inside of the caliper piston cup. If you see a square depression in the center, it is a turn or twist in caliper. DO NOT try to compress it. You'll damage the caliper and increase your brake job costs. Chances are when a brake caliper wont compress it is the type that must be turned and compressed at the same time and requires a special tool that you can borrow from a local chain auto parts like Auto Zone. That was the case on my 96 Buick Riveria rear disk brakes.
Chances are when a brake caliper wont compress it is the type that must be turned and compressed at the same time and requires a special tool that you can borrow from a local chain auto parts like Auto Zone. That was the case on my 96 Buick Riveria rear disk brakes. Hope this helps.
stuck parking brake/stuck brake caliper
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
on the caliper take out the bottom bolt, there are two bolts that the caliper slides on and only undo the bottom one. Then the caliper will swing up and allow access to the disc pads . You need to get a G-clamp and push the piston in the caliper back( or else it wont fit back down). put it back together and pump the brakes to set the brake piston b4 you drive or the first time you go to brake you wont have any.
yes the brake caliper has to fit into the wheel a smaller wheel may fit the lugs but wont go over the disk and caliper (or drum)
Brake locked up? Broken return spring? (Drum brakes)? Parking brake cable frozen and not releasing? Disk brake? Frozen caliper? Bad wheel bearing?
The reason will more than likely be because when you changed the pads you had to compress the caliper piston in order to put new pads on. you did'NT compress it far enough. did you have a hard time putting thr caliper and pads back over the rotor. If so this is your problem. When you say that the tire doesn't spin, do you mean it feels like someone has their foot on the brake or that it doesn't spin as freely as it did befor you changed the brakes. write back and let me know.
When you say the "caliper won't line up", do you mean that you can't get the new brake pads over the rotor? Most calipers must be opened up when you replace the brake pads. You can usually buy, rent or borrow a specialty tool that opens up the caliper for you. The new brake pads are much thicker than the old, worn pads, and the caliper has closed down on the old pads to keep them working. New pads wont' fit until you open up the caliper. If you're describing a different problem, you'll need to clarify.
Unless the calipers are frozen- you will have a slight drag as the brake pads maintain contact with the caliper