Sticking Rear Brake

[BioHzrd]

Right my Pass side rear is sticking and its starting to get on my tits while driving ive ordered up new pads so going to replace them, want to know what i need to strip down and clean/grease up to solve the sticking ??

Cheers

 

[Henry]

three things - the sliders, the piston (don't remove it - just lube it with WD, by winding it back it and pumping it out repeatedly), and the handbrake mechanism (within the rubber boot)