How to Retract Rear Brake Piston - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 10 Old 04-04-2015, 07:59 AM Thread Starter
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How to Retract Rear Brake Piston

I'm going to be changing the rear rotors and pads on my 09 EX-L shortly. I also know that ypu just can't squeeze the piston back in like you do on the fronts. Is there a special tool I need to turn the piston and, do I assume that it turns clockwise to retract? Or can I just just a big screwdriver?


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post #2 of 10 Old 04-04-2015, 09:14 AM
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Go to any part store like oreily or autozone and rent a brake piston tool. It's free to rent and easy to use, just turn the piston clockwise to compress it.


If your no where near a store you can buy a piston tool that attaches to a regular ratchet with extension on Amazon for 7$




Either one is very easy to use.

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post #3 of 10 Old 04-04-2015, 09:36 AM
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rear piston is a spiral piston right?

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post #4 of 10 Old 04-04-2015, 11:05 AM
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rear piston is a spiral piston right?
Yes
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post #5 of 10 Old 04-04-2015, 01:39 PM
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In the past I've done it with a heavy duty C-clamp or a Vice, whichever I could find and it seems to do the trick as well.
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post #6 of 10 Old 04-04-2015, 04:27 PM
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In the past I've done it with a heavy duty C-clamp or a Vice, whichever I could find and it seems to do the trick as well.
That would work for the front calipers, but not on the rear calipers. I haven't done my rear brakes yet, but I've seen many people use big flathead screwdrivers and prybars to turn the piston. Not as effective as the tool, but it works.
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post #7 of 10 Old 04-04-2015, 05:40 PM
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Originally Posted by ricerocket View Post
That would work for the front calipers, but not on the rear calipers. I haven't done my rear brakes yet, but I've seen many people use big flathead screwdrivers and prybars to turn the piston. Not as effective as the tool, but it works.
Exactly. DO NOT use a clamp to compress the back lol.

Yea I have used the end of a pry bar before but it's iust easier to use the piston tool plus I have an autozone and oreily within a mile of my house.
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post #8 of 10 Old 04-05-2015, 06:47 AM
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Exactly. DO NOT use a clamp to compress the back lol.

Yea I have used the end of a pry bar before but it's iust easier to use the piston tool plus I have an autozone and oreily within a mile of my house.
I've yet to do my rears, so I was under the impression they were exactly the same as the fronts. Now I'm curious to see and want to go out and take a look at the rear caliper. Thanks for the info, I would have been out there with a damn clamp trying to figure out why the hell it worked on the front and not the rear.
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post #9 of 10 Old 04-05-2015, 07:01 AM
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For newbies, I highly recommend YouTube videos from "Eric the Car Guy" - he points out the differences between front and rear calipers and shows you a few options to retract the rear pistons. Some times he uses the special tool, sometimes a large Flathead screwdriver, and sometimes I have seen him use a pry bar.

Anyhow, lots of YouTube videos are dangerous, but ETCG videos are spot on. Check them out.
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post #10 of 10 Old 04-05-2015, 07:19 AM
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I'd recommend just picking up the square box socket tool that most car parts stores and likely even Walmart has. It's one of those small things in your tool box that you'll buy once and unless you are doing a LOT of brake jobs, you'll have it for years or possibly even the rest of your life.


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