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Brakes & Suspension Forum sponsored by The Tire Rack |
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12-13-2018, 09:35 PM | #1 |
Scooby Newbie
Member#: 180832
Join Date: May 2008
Chapter/Region:
SWIC
Location: Phoenix, AZ
Vehicle:2015 STI WR Blue |
2015 STI: Rear brake job?
I know my 2015 STI is due for rear pads, and I have them sitting here to go on. Simple question -- do the rear calipers have pistons on both sides like the fronts? If so, how the heck do you compress the pistons to get the new pads on?
When I did the fronts, not knowing a better way, I actually disconnected the calipers from the brake hoses and pressed them in by hand (squirting fluid everywhere, of course), then reconnected. It then took four attempts (and three quarts of fluid) at bleeding the system to get all the air bubbles out. I'd rather not go through that again, so I thought I'd ask here before I tear into it. Thanks! Rob
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12-13-2018, 09:43 PM | #2 |
Scooby Specialist
Member#: 472037
Join Date: Jul 2017
Chapter/Region:
MWSOC
Vehicle:2018 WRX Limited CWP |
You don't need to disconnect anything to push the pistons in. Why would you disconnect the front calipers when there are tons of tutorials online showing you how to do it properly with the right tools.
The rear I believe simply push in because the caliper does not contain handbrake assembly. |
12-13-2018, 09:45 PM | #3 |
Scooby Newbie
Member#: 180832
Join Date: May 2008
Chapter/Region:
SWIC
Location: Phoenix, AZ
Vehicle:2015 STI WR Blue |
You generally need a C-clamp or something to push the pistons in, as you're fighting all of the fluid in the system.... which is why I'm asking here.
I really wish I could ask a simple question on a forum and get a real answer not a derogatory reply. Forget it, I'll figure it out. |
12-13-2018, 09:46 PM | #4 | |
Scooby Specialist
Member#: 472037
Join Date: Jul 2017
Chapter/Region:
MWSOC
Vehicle:2018 WRX Limited CWP |
Quote:
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12-13-2018, 09:48 PM | #5 |
Scooby Guru
Member#: 71875
Join Date: Oct 2004
Location: Montana
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I like to push the fluid out the bleed screw instead of back up the lines.
Get a piece of hose and a bottle (they make kits specifically for this), crack the bleeder, and then push the pistons back in. They will go back much easier as well. They make tools to push the pistons apart, I generally just leave the old pads in and pry on those. |
12-13-2018, 09:53 PM | #6 | |
Scooby Specialist
Member#: 472037
Join Date: Jul 2017
Chapter/Region:
MWSOC
Vehicle:2018 WRX Limited CWP |
Quote:
https://www.summitracing.com/parts/l...xoCxtkQAvD_BwE |
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12-14-2018, 01:25 PM | #7 | |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Quote:
You clearly know that you push the piston in with a c-clamp... so what's the issue here? If there are pistons on both sides then you push them in one-by-one. |
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12-14-2018, 01:38 PM | #8 |
Scooby Newbie
Member#: 313468
Join Date: Mar 2012
Chapter/Region:
RMIC
Location: Draper, Utah
Vehicle:2010 Sti Red |
Actually, you can't do that, if you push one in, the other will get pushed out. You have to be able to compress both at the same time. It will take quite a bit of force to do so, id suggest a tool specifically designed for this.
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12-14-2018, 04:01 PM | #9 |
Scooby Specialist
Member#: 375462
Join Date: Dec 2013
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2006 Impreza WRX STI WR Blue |
Or you could... you know... use 2 c-clamps.
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12-14-2018, 04:50 PM | #10 |
Scooby Specialist
Member#: 472037
Join Date: Jul 2017
Chapter/Region:
MWSOC
Vehicle:2018 WRX Limited CWP |
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