I just did the rear drum brakes in my pickup and had to change a couple axle seals and a wheel bearing and its case(b/c the damned thing spun in the case). I didn't adjust the brakes after I was done because I am a moron, but I did bleed the hell out of them. When I went to drive away the brake went straight to the floor, but I was able to stop. What a weird feeling. I've never felt that one before. I had to adjust the brakes a couple more times to get the things to work correctly.
I had my old man pump the brakes like a money and I crack the bleeder so it is good now.
Just wanted to share a somewhat usefull story with the cautionary note to adjust the drums before driving away if you do drum brakes.