Change the pads, then the fluid. Crack the bleeder on the caliper to assist in pressing the piston back in. Working in that order, you will only lose old fluid rather than the new stuff. The flush and bleed later will take care of any air in the system.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.