Rear Brake Sticking

[GrumpyTwo]

I am having a bit of trouble with my 2018 RT LC, the rear brake is sticking on. I have had the caliper off, stripped it down, replaced the seals, cleaned and greased the slide pins. Fitted the caliper back on with new pads and a new disk, and it is still sticking on.
I did think the hand brake might be stuck on, but I have never used it and really don't know where it is, I also thought the brake hose might have collapsed, but there is plenty fluid getting through.
Any help would be appreciated.

 

[fink]

Air in the system. Did the pistons go back in easily enough?

 

[theoneandonly]

my my2000 gs did this , i did a set of rear pads in 3 weeks ! check m/cyl ...is it rebuild-able ?
mine had a circlip holding in a white plastic sleeve . cause was corrosion between sleeve and body . stripped it out cleaned body

sticking rear master cylinder.

well bloody thing started sticking again , master 2-3 years old . pulled it off , got new spare out of box, thought lets pull this to bits and see??? remove circlip , use 3mm allen key to drift out piston , piston is clean , no corrosion present , seal looks good. use internal puller to...

www.ukgser.com

 

[theoneandonly]

what happened ?