1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

UUUGGGHH!!! I hate pistons!

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Old 09-15-09 | 06:04 PM
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Angry UUUGGGHH!!! I hate pistons!

Ok im having a hell of a time doing this brake job which is taking me a week and going. the problem i am having is that on the rear caliper( which is stock i think) the piston will not retract at all so i cant get the brake pads in at all. i have searched this alot and am coming up with nothing oh the car is a 85 gsl se
Old 09-15-09 | 06:08 PM
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um it screws in
Old 09-15-09 | 06:20 PM
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yep. Screw it. They do have a tool at the autopart stores that makes it easier.
Old 09-15-09 | 07:33 PM
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as said before it screws in, they do have the tool, but i didn't have a ride to go to the auto parts store, so i grabbed some pliers and GENTLY gripped at the center and turned, it just takes a little bit longer this way.
Old 09-15-09 | 07:46 PM
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I know this i have screwed clockwise as my book says no luck with pliers i tried like 5 different types of pliers and i did it hard!!! still no luck you think i should just go with some new calipers??? or what
Old 09-15-09 | 09:18 PM
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Originally Posted by Rehd
I know this i have screwed clockwise as my book says no luck with pliers i tried like 5 different types of pliers and i did it hard!!! still no luck you think i should just go with some new calipers??? or what
You need one of these bro. It makes the job a whole helluva lot easier.



You can get them at napa, advanced, checker, autozone, etc. And are about 12 bucks. They chuck right into a driver just like a socket.
Old 09-16-09 | 01:42 AM
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Could be locked up but I would try the right tool for the job first.
Old 09-17-09 | 05:04 PM
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its locked up i had in a vice with that tool above and put all my weight on it and it didnt budge. im ordering new ones... oh well thanks for the help anyways guys
Old 09-17-09 | 05:26 PM
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man which way you turning?

with the caliper off and in a vice and you had the right tool you must be going the wrong way lol
Old 09-17-09 | 05:30 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Rehd
its locked up i had in a vice with that tool above and put all my weight on it and it didnt budge. im ordering new ones... oh well thanks for the help anyways guys
i have had some STUCK ones, but eventually they freed up
Old 09-17-09 | 07:47 PM
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You can fix stuck calipers. You need to rebuild them, it's not hard but parts could be a pain to fix.

I never had this problem on my rx-7s, but i had to rebuilt my tiburon calipers. Also sometime the pistons in the bracket it self can get stuck.
Old 09-17-09 | 11:15 PM
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Man, rear brake calipers are never fun.
Old 09-17-09 | 11:37 PM
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True that! about a month ago a simple rear pad change turned into a caliper rebuild to a "**** that" situation, and outta frustration i just pulled the calipers off my parts car to put onto my daily. The piston was tighter than a nun.
Old 09-18-09 | 05:41 PM
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I was turning clockwise then went counter for the hell of it. no luck ugh im getting now ones and will probably just rebuild them and have some extras. but yeah i really dont like rear calipers now hahah
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