Apparently this is a known problem. The rotors should be changed but it is the calipers that are the official problem. Change both and there is longevity of use.
To push the piston in on the rear caliper of a 2006 Mazda 3, you'll need to use a special tool called a brake caliper tool or a C-clamp. First, remove the caliper from the bracket and ensure the brake fluid reservoir is open to prevent pressure build-up. Then, insert the tool between the caliper and the piston, and turn it clockwise while applying pressure to push the piston back into the caliper. Make sure to check the brake fluid level and adjust as necessary after the piston is fully retracted.
I actually had to manufacture a part to change the brakes, because none of the piston tools fit the Mazda 3. Once you have everything off (tires, rotor, cliper) will will have to release the valve so that the pressure can be relieved. You will see 2 small indentions on the piston. You will have to alternate between turning that piston head and compressing the piston with a clamp. It took me a long time, and I broke a clamp before I realized you have to turn the piston head. I will try to get somes pics when i do it again to show everyone.
DOT 3 brake fluid
The Mazda 3 is 2mm, probably the same - 2mm
To change the rear brake pads on a 2006 Mazda 3, start by safely lifting the vehicle and removing the rear wheels. Remove the caliper bolts and slide the caliper off the rotor, then take out the old brake pads. Compress the caliper piston using a tool or a C-clamp, place the new pads in position, and reattach the caliper. Finally, reassemble the wheel, lower the vehicle, and pump the brake pedal to ensure proper function before driving.
probably the parking brake indicator
popery 4
The type of brake fluid a Mazda 323 made in 1997 uses is called Dot 3. This is the standard type of brake fluid for most modern cars.
1. Tire iron to remove wheel 2. 17mm wrench to remove caliper 3. C-clamp or large pliers to compress caliper piston That's all :)
23mm front 9mm rear
DOT 3 Brake Fluid
You need a special brake piston tool to do this. Here is a link that shows what this tool looks like: http://www.lislecorp.com/tool_detail.cfm?detail=416 Basically, you put this on the end of a 3/8 inch drive, then use the side of the tool where the pins match your brake piston. Engage the pins from the tools into the piston slots, press in and turn clockwise. It will take a lot of turns to move it back in the bore.