Saturday, November 20, 2010

I have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers

If the pad end of the piston has a big slot in it the piston will have to be turned back in it's bore as others mentioned.If the piston end is flat (no slot) then you may use a c-clamp.I have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
before you remove anything you use a flat head screw driver and pusch in the old disc pad slowly it takes time and it will go inI have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
Your calipers made need replacing as wellI have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
Easiest way--turn bleeder nipple anti-clockwise. then, use a c-clamp to slowly squeeze piston back into recessed position. I find usually a c-clamp 4 inches between the jaws is best. If necessary, place a thin piece of wood (like a piece of broken off wooden ruler) on both insides of clamp to protect piston and caliper. Then just place the pads into position and you are brakingI have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
Use a %26quot;C%26quot; clampI have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
You can use a screw driver but it's best to use a large C clamp.I have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
I have to assume it has the parking brake built into the caliper. If that is the case all the C-clamps in the world won't push it back in. Here's what you need to do.



Twist clockwise while pushing them in. They sell a tool that fits in the end of a ratchet extension, or you can take an old ~13/16%26quot; or so socket, and grind it so it has two little points, one at either side of the opening. Put the caliper back on without pads or rotor, Put the tool on the end of a ratchet and extension, place it against the piston lining up the notches to the slots in the piston, then just push and twist.



Ps. Make sure to leave the slots facing the right way; they line up to bumps on the back of the pad. Don't worry about twisting it too far, you can twist them indefinately. If you twist it too far just go another revolution.I have a 1994 MAZDA 626 ES ,when changing rear disc brakes,how to you move the pistons back into the calipers
Use a big C-clamp over the caliper, using the old brake pad to push the caliper in. Just turn the clamp till the caliper won't move any more. hand pressue will do fine, you should not have to use any tools.



My big 81 MonteCarlo and 85 Chevy truck took a 6%26quot; clamp for the front brakes. Your caliper may be smaller but probably not bigger, being rear brake on a lighter car.



Put a rag under the master cylinder, as you'll probably push brake fluid out and make a small mess in your engine compartment without it.