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 Post subject: 2012 Explorer Rear Brakes
PostPosted: Mon Oct 31, 2016 12:53 pm 
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Posts: 7730
Location: MA
So my friend has a 2012 Explorer with ~65K on it.
- Her brakes pulsated bad.
- They also had WAY too much pedal travel.
- The e-brake doesn't do a DAMN thing. Like literally nothing, and the cables are pulling the levers on the calipers nicely.

Step 1) I pumped up her brake pedal with the car off and it sunk all the way to the floor if I held pressure on it. So - I slapped a new master cylinder in it. Now it holds pressure when pumped, but still has way too much pedal travel.

Step 2) The front AND rear rotors were pulsating for sure. The Explorer must have sat for a time and rusted the rotors. I could have gotten away with cutting them probably, but I get great deals on auto parts, so I replaced all rotors and pads. So - the pulsating is now gone.

Existing Problem: The e-brake still does absolutely nothing when pushed, and I can see that the rear caliper pistons are coming back into the caliper WAY too much, causing tons of pedal travel. The calipers, sliders, and pads all move perfectly. It is just a weird scenario where the caliper pistons are literally being sucked all the way back into the calipers for some reason, without pressure on them. SO - my theory is that the ratcheting mechanism for the e-brake isn't working, and therefore the piston is not set "out" far enough to begin with. This means that the e-brake and regular brakes have too much travel. AKA - I need to replace both rear calipers.

Does this seem right? I realize its a Ford (he he) but it's a 2012 for gosh sakes! It's weird to me that the ratchet inside them both has failed at 65K.

Thoughts?

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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 Post subject: Re: 2012 Explorer Rear Brakes
PostPosted: Wed Nov 02, 2016 8:31 am 
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Posts: 3688
Location: Central NY
I think you're on the right track.
Someone before you probably used a c-clamp and squished the pistons back, instead of turning them in with the face spanner cube of doom, stripping the adjustment out.

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Walt
04 RX-8 Touring Rebuild!
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Some people never have anything except ideas. Go do it.
Emissions & fuel economy haven't exactly been areas of strength for past rotary power plants, but absolutely no one with a soul has ever cared.


Wed Jun 24, 2009 12:21 am
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 Post subject: Re: 2012 Explorer Rear Brakes
PostPosted: Wed Nov 02, 2016 8:43 am 
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Posts: 7730
Location: MA
A guy I talked to at a ford dealer said the same thing. Before my friend bought the vehicle, it had new brakes put on it, so it's plausible.

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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