Here is a condensed version on how to change the brake pads on a GM drummed braked car. This is on a 1994 Chevy Caprice Station Wagon with 11″ drums. I narrate the disassembly and talk about the parts, then speed up the reassembly process. I changed the pads because the ones that were on the car were sticky when damp (probably because they’re cheap). The drums did not need machining, but I did grind a rust lip off the edge so they would reassemble.