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I cant get the piston to retract so the pads and rotor will fit in the gap

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Open ur BLEEDER nipple and push the caliper till u got the gap u needed or use a BiG SLOTED screw driver to force wedge it between the pad and rotor! Hope that makes ur job much easier!

Posted on Nov 11, 2010


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1 Answer

How to replace front brake pads?

For most cars it is very simple process, pull wheel, look for caliper bolts, usually two, loosen, remove, wiggle caliber to pull out and away from rotor, remove pad clips to release, slide out pads, noting position so you install new ones the same way, inside pad and outside pad, apply pressure to spread pads apart to fit on rotor, some pistons will remain open, some will close a bit and rotor will not fit, so applying pressure to retract pistons is usually required, I use flat prybar using two putty knife blades not to damage pads, once you have pads retracted, act fast and slide over rotor and position and insert bolts, pay attention to torque specifications on bolts for calipers. You can usually find videos on YouTube which help if needed. Good luck.

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How to retract brake caliper piston?

Hi, if this is a front caliper that is still on the rotor, I pry between the rotor and rear brake pad to push the piston in. I usually have to pull on the caliper a bit to get it retracted enough to get a screwdriver in between. If the caliper is already off the rotor, I leave the old inside pad on the piston and put a large c-clamp over the caliper to push on the pad and retract the piston. If this is a rear disk caliper or if you have any questions, please reply.

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1 Answer

What if while replacing my brake pads, the brake wont release so i can fit the rotors and pads in?

open the bleeder on the brake caliper, if you can then retract the piston then replace the brake hose that aitches to the caliper if after you open the bleeder you still can not retract the caliper piston then you will need to replace the caliper.....GOOD LUCK

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2 Answers

How to comress the piston to replace brake pads

2 ways:

1. If caliper is still on rotor, use a small scewdriver to gently pry between the rotor and rear pad. Once loose, use a larger screwdrive, but continue to pry gently and slowly until fully compressed.

2. Caliper off rotor. Put back pad in place and apply a c-clamp across pad to back of caliper. Slowly close clamp until piston is fully retracted.


Oct 01, 2010 | 2004 Chevrolet Malibu

4 Answers

Put new pads on my 05 ford excursion 4x4 and I cant get the caliper to go back on the rotor. there are 3 pcs involved, the rotor, the caliper, and a bracket that the caliper mounts to. first I put on the...

youll have to clamp the brake hose,undo the bleed screw,and push the piston[s] back in,then shut off bleed screw,undo clamp on hose,and try assembly again.bracket first,then pads into bracket,then slide caliper over pads,and then put bolts holding caliper back in ,with a bit of grease on the slides.

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1 Answer

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Changing front brake pads

Compress the pistons with a clamp with THE OLD PADS IN PLACE. They will give you a nice flat area to use between the piston and the clamp while compressing. 2.Use a screwdriver as a spacer between the pad and rotor to keep the opposite pistons from moving when compressing the other side. If you do not do this, the pressure will close the gap between the piston and the rotor. (ie. if you have already compressed the pistons closest to you, put the screwdriver in between the pad and rotor to maintain that space when compressing the far side. Otherwise, the action of compressing the far side will push the pistons you have already compressed back towards the rotor on the side closest to you. 3. Pay attention to the placement of the metal clip BEFORE removing it. It fits on the INSIDE of the pads. This is the only way it will flip up and into position when you are done.

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2 Answers

Changing rotors and breaks

When you replace the pads you have to retract the pistons into the bore. As the pads wear they stay extended from the brake caliper. The new thinkness of the pads will not allow the pads the slip over the rotors until you retract the pistons. Your pistons may be the type that have to be turned back into the bore.Good luck.

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1 Answer

Rear brake calipers

A big pair of channel locks will collaspe the caliper but it does take some muscle or you can release the brake line nut and releave the pressure but then you would have to bleed the brakes.

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