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Hi, Do I need a special tool to depress the caliper piston or can I use a G clamp? I did this on the front brakes but the rear piston seems a lot tighter.

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You can use a "C" clamp...but be sure to use the old pad that goes on the piston side of the caliper...place the old pad back on the piston and then use the "C" clamp to depress the piston back into the caliper..this will prevent damage to the piston...also, to aid in this process, you can remove the brake fluid resevoir cap and put a towel around it so it doesn't leak all over the floor

Posted on May 26, 2011

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1 Answer

Struggling to depress pistons on rear brakes. Hoave used G-clamp, Made a special tool with nut and bolt. Still struggling.


The pistons in the caliper should retract without much effort. A "C" clamp is usually all you need to do it. I suspect you have a seized caliper or possibly a kinked or crushed brake line (preventing the brake fluid from returning to the master cylinder when the piston is depressed) feeding that caliper - but isn't very likely.

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How do i depress rear pistons on 95 grand prix


On the 1995 grand prix the rear calipers are turned and pushed in at the same time to get caliper piston in. be careful not to use a c- clamp to try and push them in as damage will occur to caliper, theres a tool used to push pistons in, theres one thats a wheel with pins that sit on the face of the piston and you turn and push in at the same time, lets see if i can get a picture for you, also you can rent this tool at many auto part stores.heres a few tools and a pictures, there is also a cube shaped tool thats cheap and does the job, good day, hope this helps.2_15_2012_6_54_24_pm.gif2_15_2012_6_54_38_pm.jpg2_15_2012_6_55_01_pm.jpg

Feb 15, 2012 | Cars & Trucks

1 Answer

Need to replace the front & rear brakes . Is there any special tools needed to do this job .


For caliper brakes, mainly a large C-clamp or brake cylinder piston tool, to collapes the piston back into the caliper, to install the new pads. If you have rear drum brakes, they make a couple different brake spring tools for removing the springs on the brake shoes.

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I can't compress the caliper piston with a c-clamp. I opened the brake fluid master cylinder ( i think, no diagram given in manual and everything in german) How do I release this compression?


Did you try opening the bleeder screw on the caliper it self. If you still can't compress the piston back into the caliper after opening the bleeder screw you may have a caliper that is locking or locked up. Sometimes a big pair of channel locks and a lot of muscle can compress the caliper again. If not you may need to replace the calipers. Make sure to ask for rebuilt verses new. there is a huge price difference.

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Is there anything special about changing brake pads on a 2004 Escalade?


CHANGING THE BRAKE PADS IS THE SAME AS ANY OTHER CAR OR TRUCK THERE IS NOTHING DIFFERENT, MAKE SURE YOU REMOVE THE BRAKE RESEIVOIR CAP PUSH THE PISTON BACK SLOW AND REPLACE THE BRAKE PADS.

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Nothing other than Caliper piston retractor or large "c" clamp to push the caliper piston back into the caliper body.

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1996 olds aurora back brake pad replacement, how to compress the pads to get the caliper back over the pads?


Special tool is a 1" cube with tabs on each side that fits into indentations on the brake piston and can be purchased for $10-12 @ most discount parts stores. Use 3/8" ratchet with short extension and 'special tool to carefully turn piston onto internal hand brake screw. Take care to not tear dust boot. When piston is fully collapsed, make sure to align piston indentations perpendicular to brake pad as there are bumps on pad that fit into them. Also while screwing in piston either remove about 2/3 of brake fluid in master cylinder and refil afterwords or open the bleeder valve on brake piston assembly. Bleed if necessary.

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Successfully changed front brakes but when i went to change rear brakes the caliper seems to be stuck.what can i do?


your rear brake has most likely a drum in hat style brake.

The caliper is not stuck, you need a special tool to rotate the piston of the brake caliper and depress it down. It is connected to your parking brake, that is why this security measure was taken.

the special tool looks like this :

9d6f12d.gif

a ratchet fits in the center hole and depending on the style of piston you have you will need a specific side of this "cube" tool.
you may need to slide the pads out to see the piston.

I hope this helps, Goodluck!

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rate as fixya if this is what you need. Thanks

  1. Remove the rear disc brake caliper (2K327).
  2. Remove the brake caliper bolts.
  3. Lift the rear disc brake caliper off the rear disc brake caliper anchor plate (2B582).
  1. sya~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not allow grease, oil, brake fluid or other contaminants to contact the brake pads.
    Remove the brake pads by pushing inward and rotating the pad up.
  1. NOTE: Use a block of wood or used pad to protect the piston and boots.
    Retract the caliper piston (2196) into the rear disc brake caliper.
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