another brake question-front calipers

[ttk3]

Hello all, please point me in the right direction if its obvious but I searched and couldn't come up with an answer...

Is there an easy way to loosen/replace the bleed screw on each front caliper? I blew the brake line that crosses under the cab for the front brakes, replaced it and now I have a seriously unsafe spongy pedal. I assume this problem is due to air in the front brake lines. I would bleed them but the truck has spent the last 10 years ('97 F350) absorbing salt from roads and the front bleed screws have essentially disintegrated. Even the dealer won't bleed them because it's so damaged. Any tips greatly appreciated and before you suggest it, I'm trying to avoid any caliper replacement/upgrades. Thanks again.

[fordnut85]

Your probly gonna break the bleeder off when you try and remove it, hopefully you can get it out with an easy out. You can try spraying them down with PB Blaster for a few days before you try and remove them. Other than that you will probly have to replace the calipers

[ttk3]

sigh... OK thanks.

[egorcenski]

or you can use pb blaster and then some heat I know the heat isn't great for the caliper but what do you have to lose?