Brake pedal removal from housing

ermarccio,
Might depend on the year & model, which you didn't tell us. On my 64 & 65, a small screw secures a "fork plate" which slides into a groove in the pivot shaft to secure it. Remove those and you can tap the pivot shaft out and the brake pedal will drop down. There are plastic bushings that slide into the pedal's cylinder which might need replacing, so try to get those first if you feel any wobble now. I might have seen those from a big seller at a Mopar show who is probably also on ebay. I have a 74 pedal assembly (auto) and recall it is similar, but perhaps never removed the pedal. The pedals and bracket differ from mine.