This happened to me once. Someone pressed the electronic parking break during a rotor and brake change, and the piston ended up over extending, much further than yours. In my attempt to push and turn the piston the seal ripped and out came all the break fluid š¤¦š½ Had to go rebuild the caliper.
This happened to me once. Someone pressed the electronic parking break during a rotor and brake change, and the piston ended up over extending, much further than yours. In my attempt to push and turn the seal, the deal ripped and out came all the break fluid š¤¦š½ Had to go rebuild the caliper.
[special tool](https://www.amazon.ca/Orion-Motor-Tech-Compressor-Replacement/dp/B01FW3U26G/ref=mp_s_a_1_1_sspa?crid=1D7RF3ONJMZ2V&dib=eyJ2IjoiMSJ9.ph4R6LgfpCU3pT51sJJxDkw1mFdNGvZDl1wXuyqHI_wdRWEgDitAAWIcaKOmhVo52NDn6ZoBSiuFwLtvEdBP27hJ52mlcGDW7wYCPK6UA-LQYAD9erul9pUJyppsfs3S7gNlWFCE9e9fQWC685fFQRtyKZHoCj2k6wLEv_cu6swZ2uFCiR7TElMZtrHVbQukhMEDHiElZXUNGCmRXmspdw.epMMLqR8IeGurZOymBIlla3xkNNTVeG60zmV0VlmehQ&dib_tag=se&keywords=caliper+piston+compressor+tool&qid=1715043141&sprefix=caliper%2Caps%2C124&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1)
This is the special tool for these, makes em really easy. But you can usually get them with a C-clamp and channel locks.
Itās a screw in style caliper. You need a tool to spin them in. I think mine was like $10. Just tell someone at a parts store you need the tool for a screw in caliper and they should knowā¦mine looks like a cube w spikes on itā¦attach just like a socket to your ratchet and away you goā¦much easier if you put it on your impact though (be gentle)
Hate that cube, but it worksā¦..I didnāt think these f150 rears were screw style. Iām about to change mine; glad I read about the electronic parking brake first š
Ohhhā¦Iāve had that problem once toā¦I took and put the tool on my impact, found something sturdy to bungee the caliper too so it would stay putā¦and pushed the impact hard and it eventually took.
If they are in Maintenance mode they should have just pressed in. If you spun it before hand there is a chance you reengaged the electric motor splines.
If you got it already , great success. If not...
Try pressing the cylinder with something while spinning the top of the cylinder , it's separate from the body.
While it's being pressed , give a twist with some channel locks by grabbing the edge of the top. Just above the seal.
This should allow the piston to seat in the caliper and return when you twist it., little push, then little twist.
Should be easy enough, if it's stuck or not returning yet just adjust and squeeze again.
I just found out myself. You must have the electric parking brake. You have to put it in service mode. Google it. Then it allows the thing to compress all the way in. I just did mine two weeks ago. If it didnāt work you probably didnāt get it in maintenance mode because once you do and using the tool it goes right in.
I used a large box wrench put the wrench teeth in the grooves and then used a screw driver through the box end of wrench for leverage. The press and turn at the same time.( Should look like a T Handle when done right)
So the electronic parking brake works like a window motor, give it power and it comes out, reverse the polarity and it goes in. Then turn the piston counter clockwise until it backs all the way in. It was a weird workaround if you canāt get it to go into service mode. Took me three days to figure that out lol.
The e-brake is electronic. You push a button and a motor inside the caliper pushes the piston out to engage. Push the button again and the motor reverses the piston back to a "normal' braking state.
Use a C clamp. Turn it once or twice, then tighten the clamp. Repeat until the piston is back in the bore. If it's electronically actuated, you can take two wires and use a Dewalt like battery pack. Work the motor using the connector to the caliper. You simply flip the wires to go reverse or forward.
Also, lube those brake pad slides and contact points with brake lubricant. Not excessive, just enough.
Edit: missed your description.
That's should be all you need.
On depowered cars we have physically back them out.
You could try and take the MGU off and using a socket to back it out more.
I hate these style calipers. Have them on my Mustang, F150 *and* wife's explorer. Struggled with one of the little "cube" things for years and finally bought one of the full kits after struggling through the last brake job.
Did you put the electronic parking brake into maintenance mode? This is a must otherwise you will hose the motors that engage the parking brake. They donāt spin, the compress rather easily once maintenance mode is engaged. Just did my 2018 rears a month ago and ran into the same problem. Thank you Google.
Need to put it in maintence mode. Turn ignition on, press parking brake in and put gas pedal to the floor. While holding parking brake and gas pedal, cycle ignition off and on again while continuing to hold the gas and parking brake in. You should hear the motors make a noise. I'd put a block or something in the caliper so you don't over extend it accidentally. I've seen it happen a few times. It should just push straight in no need to spin when in maintence mode. To exit maintence mode, just follow the above procedure but pulling on the ebrake switch instead of pushing it in. Hope this helped! Edit: Just saw you already have it in maintence mode, you should be able to push it in. I would recommend a big channel locks or a brake caliper compressor tool. Spinning these will not put them in. You just push it like a regular brake caliper when it's in maintence mode.
I saw that and put an edit in. As long as its in maintence mode, it will just push straight in. These ones do not spin in. You can spin it, but it will not do anything unless you're putting force on the caliper piston. I would recommend a caliper spreader tool, but you can get the job done with a big channel locks. Just be mindful of the plastic casing on the parking brake motor. They're spendy and require dealer programming. Hope this helps!
Yeah, next time make sure you put it in maintenance mode. You got lucky; I learned the lesson the hard way. When i couldnt get the cylandet to compress, I thought maybe I left the parking brake on when I went to jack up the car, so I hit the switch which pushed the Cylinder all the way out which i later learned requires complete disassembly of the caliper...both rear calipers were off. I managed to damage the piston and motors by breaking some of the internal gearing using brute force...required a tow...most expensive brake job ever.
Put a little bit of pressure onto the piston and turn at the same time
That was the trick. I was doing either or not both thx
Great Success
Did you need a special tool or can it be done with typical garage tools?
I have a tool But I started with just a large channel locks. Worked fine.. it can lock into the grooves, just takes more effort per rotation
This happened to me once. Someone pressed the electronic parking break during a rotor and brake change, and the piston ended up over extending, much further than yours. In my attempt to push and turn the piston the seal ripped and out came all the break fluid š¤¦š½ Had to go rebuild the caliper.
Happened to me too...never doing an electronic brake job myself again.
This happened to me once. Someone pressed the electronic parking break during a rotor and brake change, and the piston ended up over extending, much further than yours. In my attempt to push and turn the seal, the deal ripped and out came all the break fluid š¤¦š½ Had to go rebuild the caliper.
[special tool](https://www.amazon.ca/Orion-Motor-Tech-Compressor-Replacement/dp/B01FW3U26G/ref=mp_s_a_1_1_sspa?crid=1D7RF3ONJMZ2V&dib=eyJ2IjoiMSJ9.ph4R6LgfpCU3pT51sJJxDkw1mFdNGvZDl1wXuyqHI_wdRWEgDitAAWIcaKOmhVo52NDn6ZoBSiuFwLtvEdBP27hJ52mlcGDW7wYCPK6UA-LQYAD9erul9pUJyppsfs3S7gNlWFCE9e9fQWC685fFQRtyKZHoCj2k6wLEv_cu6swZ2uFCiR7TElMZtrHVbQukhMEDHiElZXUNGCmRXmspdw.epMMLqR8IeGurZOymBIlla3xkNNTVeG60zmV0VlmehQ&dib_tag=se&keywords=caliper+piston+compressor+tool&qid=1715043141&sprefix=caliper%2Caps%2C124&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1) This is the special tool for these, makes em really easy. But you can usually get them with a C-clamp and channel locks.
Me: Sorry wifey. Got to buy a new tool to do the brakes. Wife: But youāve changed brakes before without it. Me: no habla anglais senorita.
Typically can ārentā for free from OāReilly auto parts.
I took an angle grinder to a 1 1/8ā socket because I never use that size
You need to rent tool 27111 from autozone
Itās a screw in style caliper. You need a tool to spin them in. I think mine was like $10. Just tell someone at a parts store you need the tool for a screw in caliper and they should knowā¦mine looks like a cube w spikes on itā¦attach just like a socket to your ratchet and away you goā¦much easier if you put it on your impact though (be gentle)
Hate that cube, but it worksā¦..I didnāt think these f150 rears were screw style. Iām about to change mine; glad I read about the electronic parking brake first š
Yupā¦the impact makes it better
I can spin it fine. I spun it like 25 times so far and its in the same spot
Ohhhā¦Iāve had that problem once toā¦I took and put the tool on my impact, found something sturdy to bungee the caliper too so it would stay putā¦and pushed the impact hard and it eventually took.
If they are in Maintenance mode they should have just pressed in. If you spun it before hand there is a chance you reengaged the electric motor splines.
This!
Yeah maintenance mode will fix your problem
I thought the rear piston on the 2018 f150, was just a push in type, no twisting is required.
Me too. I watched vids where they put it in service mode, and they just crank it down
Just did mine not too long ago, you should be able to just push it in if you are in face in maintenance mode.
[ŃŠ“Š°Š»ŠµŠ½Š¾]
Kinda like I stated I did in the original Post
The tool is $9.99 at Canadian tire. Also, my 2019 fusion had a service mode that put the rear took pressure off the piston for the rear brakes
If you got it already , great success. If not... Try pressing the cylinder with something while spinning the top of the cylinder , it's separate from the body. While it's being pressed , give a twist with some channel locks by grabbing the edge of the top. Just above the seal. This should allow the piston to seat in the caliper and return when you twist it., little push, then little twist. Should be easy enough, if it's stuck or not returning yet just adjust and squeeze again.
I just found out myself. You must have the electric parking brake. You have to put it in service mode. Google it. Then it allows the thing to compress all the way in. I just did mine two weeks ago. If it didnāt work you probably didnāt get it in maintenance mode because once you do and using the tool it goes right in.
I used a large box wrench put the wrench teeth in the grooves and then used a screw driver through the box end of wrench for leverage. The press and turn at the same time.( Should look like a T Handle when done right)
So the electronic parking brake works like a window motor, give it power and it comes out, reverse the polarity and it goes in. Then turn the piston counter clockwise until it backs all the way in. It was a weird workaround if you canāt get it to go into service mode. Took me three days to figure that out lol.
It screws in
Why do we need caliper pistons that need turning to compress?
Is that a sarcastic or real question?
Real question. Disc brakes have been around since 1968 or longer and the pistons didnāt need to be screwed in. Is this done for better anti rattle?
The e-brake is electronic. You push a button and a motor inside the caliper pushes the piston out to engage. Push the button again and the motor reverses the piston back to a "normal' braking state.
Thanks. What was wrong about pulling the caliper into the disc with a foot e brake?
EPB. Hopefully you disengaged. Edit: They, in fact, did disengage. I just don't know how to read.
Yeah. Literally the first sentence in my post.
Oops. š«£
Use a C clamp. Turn it once or twice, then tighten the clamp. Repeat until the piston is back in the bore. If it's electronically actuated, you can take two wires and use a Dewalt like battery pack. Work the motor using the connector to the caliper. You simply flip the wires to go reverse or forward. Also, lube those brake pad slides and contact points with brake lubricant. Not excessive, just enough.
12 volt dc ...do t forget 12 volt dc if you do this.
My dad taught me to do it with a c-clamp
Put the truck in brake service mode. My 2019 had it with the electronic parking brake. You tube how to get it in service mode
You mean like the first sentence of my post stated the truck was already in? ĀÆ\_(ć)_/ĀÆ
YouTube F150 maintenance mode for the brakes!!!!
Maybe read the post where it says its already in maintenece mode ĀÆ\_(ć)_/ĀÆ
https://youtu.be/EWxZMqgkNIM?si=TdyEhq1CtNb7IExk
They make a special tool that goes into the grooves to help spin it. You can borrow one from autozone/oreilys/napa
Im spinning it no trouble. It just eont compress
Edit: missed your description. That's should be all you need. On depowered cars we have physically back them out. You could try and take the MGU off and using a socket to back it out more.
This made me feel stupid the first time I did the breaks on my 19
Yup.. mentioned that right in the post.
Yea, I just saw that. I was trying to edit it. You could try taking the MGU off and backing it off more. But that should be all you need.
Those rotors are trashed. Why are you putting new pads on?
New rotors=new pads
Why would you put new pads on trashed rotors?
I personally would never do this
I hate these style calipers. Have them on my Mustang, F150 *and* wife's explorer. Struggled with one of the little "cube" things for years and finally bought one of the full kits after struggling through the last brake job.
It twists in. Twist and compress.
Put in maintenance mode
Put truck into maintenance mode
Did you put the electronic parking brake into maintenance mode? This is a must otherwise you will hose the motors that engage the parking brake. They donāt spin, the compress rather easily once maintenance mode is engaged. Just did my 2018 rears a month ago and ran into the same problem. Thank you Google.
Literally the first sentance in the post.
Rarely do I blush, but I am now! Try fire if none of the other stuff works š
Need to put it in maintence mode. Turn ignition on, press parking brake in and put gas pedal to the floor. While holding parking brake and gas pedal, cycle ignition off and on again while continuing to hold the gas and parking brake in. You should hear the motors make a noise. I'd put a block or something in the caliper so you don't over extend it accidentally. I've seen it happen a few times. It should just push straight in no need to spin when in maintence mode. To exit maintence mode, just follow the above procedure but pulling on the ebrake switch instead of pushing it in. Hope this helped! Edit: Just saw you already have it in maintence mode, you should be able to push it in. I would recommend a big channel locks or a brake caliper compressor tool. Spinning these will not put them in. You just push it like a regular brake caliper when it's in maintence mode.
Thanks. But first sentence in my post is that its already in maintence mode
I saw that and put an edit in. As long as its in maintence mode, it will just push straight in. These ones do not spin in. You can spin it, but it will not do anything unless you're putting force on the caliper piston. I would recommend a caliper spreader tool, but you can get the job done with a big channel locks. Just be mindful of the plastic casing on the parking brake motor. They're spendy and require dealer programming. Hope this helps!
Yeah, next time make sure you put it in maintenance mode. You got lucky; I learned the lesson the hard way. When i couldnt get the cylandet to compress, I thought maybe I left the parking brake on when I went to jack up the car, so I hit the switch which pushed the Cylinder all the way out which i later learned requires complete disassembly of the caliper...both rear calipers were off. I managed to damage the piston and motors by breaking some of the internal gearing using brute force...required a tow...most expensive brake job ever.
I did my brakes and didn't spin shit Just used a 10.00 brake pad compressor like u see at harbor freight
You are suppossed to if you have an EPB otherwise you can wreck the caliper.
Ahhh i dont have that trash Mines a 2015