MK2 C4 PICASSO Rear Brake Pads and disc change/replace electronic parking brake NO DIAGNOSTIC TOOL 

Thanks

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4gIrE6vM-Qw.html

Thanks

Ok, having done this job - on my 2015 Picasso C4 with Bosch brakes - I can confirm: (1) BOTH EPB 'pistons' need to be Torx-screwed back CLOCKWISE. You can confirm this on your own brakes by trying turning them each way and observing the hydraulic piston - do the opposite of what makes them come out! (2) The EPB motors on mine were secured to the callipers using 5mm HEX (Allen) screws and not Torx - took me a few minutes to work out why the hell the latter wouldn't fit properly! (3) It is absolutely ok to unclip the EPB cable connector for this job, and that makes life MUCH easier (provided, I understand, you do not start up the ignition during the job until it's complete and the EPB is re-connected). Cover the two open ends with tape - there will be a fair amount of dust flying around. (4) When pressing back the hydraulic pistons, do NOT 'wind' them back, but press them straight in - they simply do not need to be 'wound' (the EPB does this bit), and you'll also run the risk of distorting the piston's rubber garter. (5) Once the new pads are fitted, pressed snugly against the disc, and the calliper replaced, take up the slack using the EPB piston by winding it anti-clockwise to bring the brake piston forward. You can judge it's far enough by the disc starting to bind (so back it off - clockwise - a good half-turn or so until it's free-running again), or just do it enough to take up any obvious gap, and the EPB will do the rest later once applied. Then turn the ignition back on (WITHOUT pressing the clutch to start the engine!) and engage the EPB - it'll 'whirrr' to FULLY take up any slack and get the brakes all set. Do NOT press the foot brake BEFORE this - you ideally want the EPB to take up the slack, and then for the 'hydraulics' to start from this base position.

@@Pityssakes Thank you for your detailed explaination! I would do my 2018 picasso by following your experiences.

Спасибо тебе большое, завтра я тоже займусь заменой задних колодок, надеюсь что все получится как и у тебя.Отличное видео.

Yip, t30 slim, as the screws close to the epb motor.

@@mbl-randomdiy6024 Thank you but I meant the size like M6-1.25-30 or so :)

I think it's M6x1x25.

I've searched online too, can't find a definite torque setting, just assumed, given the size of the bolt, M12 with strength grade 8.8-10 gives 100-120NM.

@@mbl-randomdiy6024 thanks for the quick reply. Yeah I agree with your thinking, makes sense. Very odd theres not more information regarding torques, if I find anything in future I'll update here.

didn't work for me - what you describes. The motor blocks the caliber to be retracted.

@@MrThetasteless you need to push and rotate at the same time, that is why you need a tool. Clockwise direction on both sides. I change for myself and for my father, 2013 and 2015 models, works fine.

@@morbias79ify Citroen's own workshop manual says to 'not' rotate the hydraulic pistons back - just push them straight in. It may be that your method worked, and may well continue to work, but it assumes the rotating hydraulic piston is able to also spin back the electronic parking brake actuator, as I guess it has done for you. But I think the safest method (if you are not using the software) is to remove the motor and wind it back manually, and just push the brake pistons straight in. (Also ensure the hydraulic piston has a notch matching that of the pad's pin.)

Nope, no need to turn piston. Just push back

@@mbl-randomdiy6024 Yes. No need to turn the piston. BUT, the motor DOES need to have been removed first, and the actuator part of the caliper MUST be wound back manually using a torx tool. Easy to do.