HI, i was changing the brakes on the 2001 volvo s40 and after doing the brakes i was doing the brake fluid and i did the right back and front with no problem , now when i got to the front left one the screw which needed to be loosened to remove the old brake fluid broke, so i just got a new caliper and ready to replace the whole thing, my question is where do i go from here as far as, i had the brake line out during this time so do i need to redo the other 3brake fluid processso i make sure there is no air in there..? i dont want to touch the back right one because that one was hard to unscrew also so whats the best way to go here?
Thanks guys

 

You should only have to bleed the front one you replaced unless all the fluid leaked out when the line was loose.
If it never went empty then just bleed the front one and see how it is.