Volvo EPB Electronic Parking Brake piston rebuild.

I accidentally turned in power while doing a brake job on my 2019 Volvo S60 T6 AWD R-Design. the caliper was removed when it happened, and the epb motor ran until the mechanism went all the way out. it went so far it basically fell apart. The ball bearings literally fell out along with all the little springs.
If this happens to you, there is hope to put it back together. watch my video and learn how you can repair or rebuild your parking brake unit.

[@deancleavesmith]

Thank you, this has just saved me, i thought there was no way I could rebuild mine, but 45 minutes and some patience and it's reassembled.

[@uouououououo4333]

Best video about ATE rear caliper with EPB on youtube

[@Slugworth88]

Praised the Lord for you. Just saved my bacon big time i saw all those barrings and panicked but you made it really simple actually

[@jeffgritzenbach1013]

Thank you so much!!! You saved me from a new caliper after I accidentally rotated the shaft in the wrong direction. Tedious to rebuild but worth the time and swear words.

[@tonysmith2038]

Thanks so much Kraftwork. I have a Jaguar F pace with identical piston. Your video saved me a fortune. Bit fiddly but well worth it and I felt very pleased with myself once completed. 👍👍👍

[@andrewphillips9798]

Just had this happen to me on a VW Mk7 rear caliper, but I wound it out manually not knowing what was about to happen. It had 72 bearings, 8 small springs and both the different length long springs. I'm not 100% I didn't drop any, but could see anymore. Anyway, used your video and put it all straight back together, longest spring 6 balls, small spring, 6 balls, etc and finished with the other long spring. Pretty easy once you recover from the initial panic. Thanks👍

[@canwefixit8129]

How did you manage to do this? I have a Mk7 Jetta and and the rear passenger rotor sheered apart, flung out the inner brake pad and fully extended the caliper piston. Being a dummy aswell, i took off the EPB motor from the back and thought i was winding it back in when i was really winding it back out. It came apart and shot bearings and springs everywhere. Except unlike in this video they don't have that outer sleeve that goes over the screw. The screw goes directly into the piston. Plus somehow a few of the springs are trashed and some of the ball bearings are smashed. Im starting to think i cant actually fix it. And for some reason you can not buy this caliper anywhere except directly from VW. Ive checked every part store in town and no one carries it and no one can even order it. VW wants 280$ for it so i guess im gonna have to bite the bullet and get a new one.

[@timgreenfield8879]

Had the same nightmare yesterday. This guy has made my day, just rebuilt it!

[@timgreenfield8879]

Oh and don't believe Andy Gough on KZbin re Golf R, he says just take off the motor and wind it back, but he has it a bit wrong in his description. Do a lot more research first and maybe use the 9 or 12v battery hack.

[@canwefixit8129]

@@timgreenfield8879 It works fine actually, i have a MK7 Jetta and just did it manually. Pop the motor off the caliper, wind back the shaft by hand. Open the bleeder valve and the piston retracts with ease. I wouldn't waste the time to try and apply voltage to do it electronically. Its just two simple torque screws to remove the motor and takes like 10 seconds to wind it back by hand.

[@timgreenfield8879]

@@canwefixit8129 but he points to the part around the gear and says it moves out. I was turning it, could not see anything so turned a bit more and did not see the piston on the other side coming out. I should have researched more I suppose

[@boyanratchev877]

God bless you for that video! I have the same calliper on VW Passat B8 2017 european spec. Autofren sells the internal guts with piston so you can take from there if the ball bearing is lost. Cheers.

[@kraftwurx_Aviation]

I know right. What a frigging disaster! It took me hours yo figure out how to pit it back together...

[@mistycottage4952]

Thanks for this heads up. I used it a basis to rebuild my Ford Mondeo electric caliper, which seems to have the same adjustment mechanism. I too made the mistake of using the parking brake manually, with the motor removed, to eject the piston. However, I did catch 100% of the bits by tipping the whole lot into a magnetic tray. There are 70 balls, 10 small springs, 1 long spring and 1 extra long spring. I'm pretty sure the extra long spring goes in first (because I found it at the front of the carnage. I too spent some time rebuilding it, in the same way you did, but I did remove the back plate to get full access to feed the bits in. I decided to put the extra long spring first followed by a group of 8 balls, then a small spring and 6 balls repeatedly, and finally 8 balls and the long spring. I found that applying some downward pressure whilst rotating clockwise, helped in moving the balls down the screw, to make room for the next ones to be fed in. I then made sure the back plate went on in the extact position, that locked the machanism, with the back plate against the adjuster, but without any pressure able to be applied to the back plate by the screw motion. I then put on the holding clip.

[@Ally.MacMillan]

Thanks for sharing. I think they are all similar across all marques, in that I don’t think they have a mechanical stop, I believe they only stop when they meet resistance, which will be why this happened to you and others. Well done figuring that out 👍

[@patricklong8603]

"Beacuse I was a moron..." I love your commentary and I'm so glad you made this video! Because I, too am a moron and did exactly this on my 2019 XC60 when changing the rear pads and rotors - right side replacement went great but on the left side the EPB kicked in with the inner pad removed and overextended the piston as yours did. The piston did not come all the way out of the boot so unfortunately I thought I could simply rewind the EPB manually by using an E12 (I think?) external torx bit to turn the EPB shaft clockwise to unwind it and then re-compress the piston after that. While re-commpressing the piston I heard a number of cracks and pops and the piston would not fully retract to be flush with the boot, so I'm certain that some of the intrernals were damaged and it looks like a replacement caliper is in my future. My first experience changing brakes on an EPB-equipped car - live and learn.

[@adamcrain-MTB]

Well, the day this video helped someone fix the same issue is today. I did something similar to Patrick here. I knew you had to take off the back and unwind it manually, which I did, but I kept turning until the piston popped out, well I was like, no problem (well, not exactly, shit my DIY brake job is going to cost $$$$) I'll just push it back in, I did that and nope the handbrake sound was not nice afterwards, it would not engage and warning on the dash. This weekend I finally got the nerve to lift up the car again and take apart the caliper as per your video, and low and behold, that was obviously the issue. I had one more problem, one of the springs was nicely bent up, so I had to fix that first. As you said really wasn't hard to get the 'pusher' back together, the main issue was the piston into the caliper - found a cheat for this, took some plastic, made a funnel to leave it into the boot, then the piston in took the sleeve out and worked like a charme. Thanks for posting this video, it gave me the confidence to give it a try.

[@audi_anatomy]

once again the amazing power of youtube and wonderful people sharing awesome knowledge!! Just did the same thing, got the whole thing spilled on the workbench, and already searched my purchase replacement options xD Thanks to you, there is hope

[@_simranproductionz_9730]

This happened to me on my 10th Gen Accord Sport 1.5 T I believe there are a few less ball bearings but I will try to start assembling it now

[@AgustinFigari]

Thank you.

[@richardmarto3577]

just saved me, thanks a lot man

[@Northern_]

These SPA rear calipers seem to be on intergalactic backorder from any source other than the dealer (where they cost an arm and a leg). This video is worth it's weight in gold. I was worried about the parking brake but it's great to see that it installs/removes from the piston and caliper easily. I tore off my dust boot to brush the rust off the piston and grease it so it moves again, but the dust boot appeared to be bonded to the caliper instead of sitting in a slot? Can you confirm that I'm wrong?

[@Northern_]

So I finished the rebuild and it's not bonded, but instead of the boot being in a secondary slot inside the caliper, it mounts in a slot on the outside of the bore and a metal ring in the rubber boot holds it in place. The metal ring means it doesn't stretch, so installing it was a little annoying. Just need to hook it on the inaccessible side, then work it over both sides while holding it in place, then force the final bit over with a large flathead screwdriver.

[@FryMl]

Nice video 👍

[@richardcassano5950]

same just happened to me. I just rotated the shaft the wrong way and too far. this stinks!!! what a nightmare for a simple job...and i even researched the EPB. So is it worth it to try to fix...or should I just buy a new caliper? looks complicated and worried it may not work correctly afterwards?

[@Slugworth88]

Oh snap I was preying that this wa goma be okay as i accidentlely turned on the ignition whilst the calaper was off. now Im up the swany without a panel. sheeat lol one lapse in consentraton and Boom! The day is buggered lol

[@BengalTiger]

I have been working on my volvo since i got it. Same thing happened to me last week. I dont know the exact amount of springs and balls are there. Is there anyway i could buy any missing spring and ball. Thank you!!!

[@druidr5440]

👍🏻

[@stevemears4137]

So I’m finding myself in this sad situation today. How did you start putting the balls and little springs in? Did you assemble them into the nut or barely tighten the screw and then feed them down from the top? I’m struggling.