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Installing brake pads - piston won't budge

Started by pmezo33, August 22, 2015, 12:35:37 PM

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pmezo33

August 22, 2015, 12:35:37 PM
Just got this 2010 MKS ecoboost a couple weeks ago and trying to do the pads.  I got the caliper off and trying to push in the piston with a c-clamp and the thing will not budge.  I can't get it even close to wide enough to get these new pads in.  Any advice? 

SHOnUup

#1
August 22, 2015, 12:53:37 PM
Did you have uneven wear on that set of pads? Might need a new caliper.

Rich

2011 Sterling Gray Metallic SHO non PP,
12.4211 @ 110.28 Livernois 3bar tune & CAI,
Added since...PPE catless Dpipes, Megan coilovers, Powergrid adjustable end links, and EBC slotted rotors and red stuff pads.
Tommy Designs grille with carbon fiber hydrographics, fender badges and fog bezels hydrodipped also, tinted windows, head & taillights, debadged trunk with all chrome plasti-dipped, black calipers, obdlink mx scantool running torque pro on 7" tablet.

pmezo33

#2
August 22, 2015, 12:56:32 PM
I'm only on my first pad (rear passenger) and the wear looks pretty even.  I'll try the other side to see if it's any easier.

SHOdded

#3
August 22, 2015, 01:26:12 PM
There must be pressure on the piston, or the piston is actually sticking to prevent it from moving.  Does the piston boot look ok?  Can you re-install the caliper and give the brakes a few good pumps, then try again?
http://my.cardone.com/techdocs/PT%2018-0002.pdf
http://www.myautorepairadvice.com/brake-caliper-sticking.html
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

pmezo33

#4
August 22, 2015, 01:28:32 PM
Checked the driver side rear and that's stuck too.  Won't budge.  I have to be missing something here.  I can't see how both calipers are both locked up the way they are.

CroR1

#5
August 22, 2015, 01:42:55 PM
Don't use the c clamp on the rear calipers. Those style calipers are twist and turn. Go to your local auto zone and rent a caliper tool, it's free, and you will see how easy they go back in.

SHOdded

#6
August 22, 2015, 01:47:12 PM
Rear brakes?  Could be the parking brake is on?  May need to open the bleeder screw to relieve pressure, and/or open the MC cap.  It may be that you actually need a piston tool for this if it is a "screw-in" type.  Autozone/Advance should be able to "rent" to you for free (net).
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

pmezo33

#7
August 22, 2015, 02:12:35 PM
Quote from: cror1 on August 22, 2015, 01:42:55 PM
Don't use the c clamp on the rear calipers. Those style calipers are twist and turn. Go to your local auto zone and rent a caliper tool, it's free, and you will see how easy they go back in.

Seriously?!  Well that explains a lot...  Is there a specific caliper tool i need or are they universal?  Never used one before.

What about the front ones?  Can I use a c-clamp with those.  Man... I wasted a whole morning using the wrong tool.

SHOnUup

#8
August 22, 2015, 02:14:29 PM
Front ones c-clamp, rear ones you can rent tools...or I found a set at Harbour Freight for $44. Don't buy many tools there, but ones you barely use...why not

Rich

2011 Sterling Gray Metallic SHO non PP,
12.4211 @ 110.28 Livernois 3bar tune & CAI,
Added since...PPE catless Dpipes, Megan coilovers, Powergrid adjustable end links, and EBC slotted rotors and red stuff pads.
Tommy Designs grille with carbon fiber hydrographics, fender badges and fog bezels hydrodipped also, tinted windows, head & taillights, debadged trunk with all chrome plasti-dipped, black calipers, obdlink mx scantool running torque pro on 7" tablet.

CroR1

#9
August 22, 2015, 02:40:07 PM
The tool that you will rent comes with multiple adapters that work on most vehicles out there, which should be adequate enough for use on our cars.

As stated above, for the front you just need a c clamp.

nickstewartroc

#10
August 22, 2015, 03:38:56 PM
Ran into the same problem, either buy the disc brake tool set at harbor freight or rent it at one of the auto parts places, should be real easy!
Current:
2013 Ruby Red Flex Limited EcoBoost, Unleashed Tuned, drop in filter

Gone but not forgotten: 2011 SHO Non-PP in Black Tuxedo Metallic - Catback, DPs, Stoptech Z23s, MDesign CAI, LMS Tune

pmezo33

#11
August 22, 2015, 05:17:55 PM
That was definitely the problem.  Using the wrong tool.  Rented one from autozone and it pushed right in.  Thanks guys.

BiGMaC

#12
August 22, 2015, 06:31:48 PM
Quote from: pmezo33 on August 22, 2015, 05:17:55 PM
That was definitely the problem.  Using the wrong tool.  Rented one from autozone and it pushed right in.  Thanks guys.
YAY!!

•2013 Taurus SHO nonPP - All Ford factory options, 3BAR MAP, LMS v8 tune (mods for 3BAR, DPs, and T-stat), Paint & plastic correction, CQuart finest all exterior surfaces, limo black window tint,VLED Triton switchbacks, Daytime BrightLites switchback DRLs, full interior and exterior LED conversion, Lamin-X charcoal blackout tail lights and reflectors, PPE catted and coated downpipes, EBPP coated hotpipes with BoVs VTA, MDesign CAI
•2013 F250 CC Lariat 6.7EB Diesel -stock

SHOdded

#13
August 22, 2015, 06:35:33 PM
Awesome!  Glad the job could get done :thumb:
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

pmezo33

#14
August 22, 2015, 07:56:17 PM Last Edit: August 22, 2015, 07:58:29 PM by pmezo33
Changed the pads, rotated the tires, and flushed the brake fluid.  And it only took me a grand total of 4 hours.  Of course 2 of those hours were spent on trying to get a caliper piston in with the wrong tool.  Live and learn. 

Just returned the rented set from autozone.  They charged $60 to rent, but got a full refund when i returned it.  Looks like you can get a set on amazon for under $30.  Going to have to order that.

http://www.amazon.com/Neiko-20733A-Brake-Caliper-12-Piece/dp/B000IB40L6
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