Caliper Piston problems

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Suspension, Brakes and Tires Discussion, Caliper Piston problems in Item Specific Cadillac Discussion; I'm trying to change the brake pads on the rear of my '96 STS and I can not get the ...
  1. #1
    Woodinc is offline Cadillac Owners Member
    Join Date
    Jul 2005

    Caliper Piston problems

    I'm trying to change the brake pads on the rear of my '96 STS and I can not get the piston pushed into the caliper, actually I can't get it to move at all. I've disconnected the brake line and removed the bleeder valve but nothing. The trouble is I can't get the old pads back on to take it to a mechanic. Any suggestion would be greatly appreciated.



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  3. #2
    king of the road is offline Cadillac Owners Member
    Join Date
    Apr 2005

    Re: Caliper Piston problems

    on many cars the caliper pistons have to be screwed back maybe this is the case with your car...youll need a special tool to do this which youll get from your local autostore, failing this your piston could be seized...leave it to soak in WD40..and try later

  4. #3
    Dadillac's Avatar
    Dadillac is offline Cadillac Owners Connoisseur
    Automobile(s): 2015 Mazda3 S GT Hatchback 2013 Kia Optima SXL
    Join Date
    Nov 2004
    Woodbridge NJ

    Re: Caliper Piston problems

    As stated, rear calipers, need to be screwed back in. Do not use a c-clamp to try and press the piston in, as you would a front caliper. Yoy will damage the caliper. I did not buy the special tool when i did my brakes. A pair of needle nose pliers worked like a charm. Just put the plier tips into the recesses, and turn clockwise, as you are viewing the piston. It takes a little effort to get it to begin turning, but after it starts, it turns very easily. Hopefully you haven't damaged the caliper. Good luck.


  5. #4
    Woodinc is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Thread Starter

    Re: Caliper Piston problems

    Thanks for the input guys. I talked to a friend and he told me they needed to be threaded in and not pressed. I ended up buying a tool for future use and to make sure I don't damage the caliper.

    Thanks again for the help.


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