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  #1  
Old 07-13-2010, 05:44 PM
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Cant get 1 brake caliper piston to recede back in

Really need advise please!!!!
At first both pistons were stuck out. I got 1 of them 100% back in by just prying it with a flat blade screw driver but the other wont go back enough to put a brake pad in.

Thanks in advance

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Old 07-13-2010, 06:04 PM
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If it is the front (and they are like mine) you can use something like this, or you can use a C clamp. I have this tool, but I used to use a big channelock pliers, with tape around the jaws. If it is the back it is a little trickier sometimes, depending on the caliper design.
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Old 07-13-2010, 06:08 PM
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I'm sorry guys it is the rear. I tried a screw driver. I'm thinking of trying a pry bar. I probably need new calibers
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  #4  
Old 07-13-2010, 07:13 PM
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Use a C-clamp against the old brake pad to push it back in, be careful to not cock it in the bore.
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Old 07-13-2010, 07:28 PM
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Thanks guys. Somebody suggested a pry bar between the old pads. That is what finally worked. At first it still wasnt budging but then finally it moved. Still was a tight fit with the new pads on one side but they are in there. Probably should get new calipers and rotors when I can.
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Old 07-13-2010, 10:12 PM
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You can't use a C-clamp on the rears on those. They are closed on both sides. You need a special spreader, or... pry bar...
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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Old 07-13-2010, 10:15 PM
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The pry bar did the trick.
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Old 07-14-2010, 07:58 AM
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spree17, only replace the rotors if they are near or below the minimum thickness, or they are warped.

It's possible that you could free a sticky caliper piston by cycling it several times. Fully retract the piston, install the worn brake pads then press the brake pedal so the brake pads grip the rotor. Repeat several times and see if the piston gets easier to retract. If not, then you will need to replace/rebuild the caliper.
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Old 07-14-2010, 09:38 AM
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Quote:
Originally Posted by Ferdman View Post
spree17, only replace the rotors if they are near or below the minimum thickness, or they are warped.

It's possible that you could free a sticky caliper piston by cycling it several times. Fully retract the piston, install the worn brake pads then press the brake pedal so the brake pads grip the rotor. Repeat several times and see if the piston gets easier to retract. If not, then you will need to replace/rebuild the caliper.
Thanks for the advice. I will try that.
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Old 07-17-2010, 02:04 PM
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i agree with the last post,if its stuck in the out position,it may be for a reason,just because your able to force it bacl in,does not mean its going to slide in and out smoothly,if it is hard at all coming out,then you jammed it closed using to much pressure,i would suggest replaceing the calipers,or rebuild them both,the piston should not bind upr have any pressure against it,work it like he said in and out,free smooth peration should be,if not,fix them.
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  #11  
Old 07-17-2010, 03:24 PM
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These are just hard to do since the caliper is closed on the other side so you can't get any leverage. I don't think the caliper is bad. He just didn't have the correct tool.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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