Question about 2001 Oldsmobile Aurora

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Aurora rear brakes How do you compress the piston on the rear brakes of a 2001 Aurora so you can replace the pads?

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  • Chief C Sep 21, 2008

    We have the calipers off the rotors, the problem is compressing the piston far enough to put the caliper back on the rotor with the new thicker shoes in place. We tried compressing the piston with the bleeder screw open, and it still wouldn't back off.

  • Anonymous Mar 24, 2014

    In reverse it locks up, vibrates and unlocks when I hit the gas.

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On rear disc brakes the cylinder actually has to turn back in. careful not to damage cylinder use large pliers to turn it to the left (facing it) until it is far enough to replace the pads.

Posted on Sep 21, 2008

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Rear cylinder needs to be turned in. Open bleeder and grab notches on piston face with needle nose pliers and gently turn to the right to compress.

Posted on Jun 16, 2009

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I agree with dogcat. YOu may also use a 6 inch c clamp to help squeeze the piston back in as you turn it with your channel locks.

Posted on Sep 22, 2008

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How do you remove the rear calapers there seems to be a floating pin in the top where the top bolt should be

Posted on Mar 28, 2011

I agree with dogcatbyme. You many also gain some help by using a 6 inch c clamp to squeezed the piston in as you turn the piston with a pair of channel locks

Posted on Sep 22, 2008

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  • Oldsmobile Master
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I'm not familiar w/ the Aurora, but this is how I've done it on a variety of cars: Open the bleeder valve, then using a large flat screwdriver placed against the rotor for leverage, put pressure on caliper (prying gently), w/ bleeder valve open, pressure on pads will be released, allowing u to remove them. countrycurt0

Posted on Sep 21, 2008

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1 Answer

How do you compress the caliper piston when replacing rear disk brake pads on a 2001 ford mustang


Try pushing in and rotating the piston clockwise at the same time. There should be slots or grooves on the face of the piston for this. You can use a C clamp and pliers if you are careful not to scratch the sides of the piston. You can buy or perhaps rent a special tool for this. Also, after the piston is retracted make sure the slot lines up with and engages the new pad properly

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A special tool is required to compress the caliper piston on the rear brakes-don't use a C-clamp on the piston.
Raise the vehicle and remove the tire. The rear calipers have only one guide pin. Remove this pin and raise the caliper. Remove the old brake pads. Using the special tool compress the caliper piston-the piston will have one or two slots on it. These slots must in the correct position to remount the caliper. Install the new brake pads and slide the caliper back over the rotor and replace the guide pin. If the caliper doesn't slide over the rotor you'll need to reset the slots on the piston. Replace the tires and you're ready to go.

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1 Answer

How do I change the rear brake pads on my 2001 aurora


Pretty similar to doing front disc brakes. The big difference is that you DO NOT compress the caliper to put the new pads in. The calipers wind in like a big screw. I think I used a pair of plyers or channel locks to fit in the end of the caliper and twist them in.

Nov 25, 2010 | 2001 Oldsmobile Aurora

2 Answers

Just want to replace pads and rotors on the front, do I need a special tool to compress the caliper?


No, you can use a c-clamp or even compress them before taking off. with the old pads on and the caliper loose, I twist the caliper back and forth to push the piston back in a tad. Then, I put a small screwdriver between the back pad and the rotor and pry gently and slowly. As the piston retracts, use a bigger screwdriver and push it in farther until the piston is fully seated. Just be carefull not to put any big gouges in the rotor. OK?

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1 Answer

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Rent a tool from auto zone to help you compress the rear brake piston. It cannot be compressed with c clamp because the piston must be turned while it is compressed.
Autozone will charge you approx. $60 for the rental and then you get all your money back when you bring the tool back.
You need to compress the rear piston so you have room for the new, thicker pads.
The rest of the job is just like any other brake job. 1. remove one pin bolt and rotate caliper open to get to the pads. 2. compress the piston in with the tool 3. replace the pads. 4. assemble.

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Get a pad spreader or C-clamp leave the old pad on the piston and compress it. If you have a strong grip big channel locks will also work

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1 Answer

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As far as I know, most front disc brake setups have pistons that are pressed back into the cylinders using a C-clamp or something similar.

However, not all rear disc systems are like this. There are some that require that the rear pistons be screwed back into the cylinder bores. These pinstons usually have some kind of indentations on the front where special tools fit and help move them back into the cylinder.

Your Hyundai may have this kind of setup.

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4 Answers

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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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