Question about 2004 Mazda 3
Piston will not go in
I had the same issue when I replaced mine. I can't say it is the 100% correct solution but it did work for me. Or course there is a specialty tool for the job, but I used a needle nose pliers and got in the two dimples on the piston face. You have to then push quite hard and screw it in clockwise. One of them I had to back out and in but it did work in the end. The fact they are so hard to do is probably related to the how soon my rear brakes went out (about 40K miles). Hopefully you got it, otherwise good luck. I just had to keep messing with it and it eventually came in. Also, I think if you fully extended the piston and wore the pads to metal that may also play a role in the difficulty getting the piston re-set. Once you get it going, it will pull right in as you turn it clockwise.
Posted on Dec 23, 2008
the piston need to be turn clock wise and push at the same time make sure when you turn it the rubber around the piston dont get damaged it stick to the piston and get torn before you turn just make sure it not sticking to the piston at the auto part store they sell the toll to turn the piston its cheap$$ hope it FIXYA our post thanks pierre
Posted on Jul 06, 2008
SOURCE: CHANGING REAR BRAKE PADS
the best thing you can do is go to an autoparts store and purchase a haynes repair manual for your car. cost about $18, but will show you everything you need to know, with pictures.
Posted on Nov 28, 2008
Your A8 and new shape A6s with electric parking brakes require an electric input to the vehicle to tell it to wind back the pistons/pads. Main dealers have this on their diagnostic equipment. You can also purchase after market tools that just do this operation, heres an example
I have only ever used a main dealer machine so im not sure how good an after market one will be. Im not aware of anyway of doing the job without an electrical input to wind back the pads, the motors are very powerful so I wouldnt reccommend trying it manually. Hope this helps.
Posted on Mar 15, 2009
you need a special tool avalable at most parts stores. its a disc brake piston turning tool. you have to rotate piston clockwise while pushing in on piston. you can fabricate something that enguages the slots and push and turn till all the way in.make sure to note position of slots and put them in same place as was before or the pin on the pads wont enguage the slot
Posted on May 11, 2010
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Posted on Jan 02, 2017
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