A/C Box Teardown Questions

[fatboy]

1969 Charger - I have searched the forum and I know the heater box lines have O-rings on the lines where they meet. I also see that the ferrules have to be removed from the drain lines to remove the evaporator. My question is "How"? I have pulled on the heater lines but they don't want to let go. I don't want to break anything. Also on the ferrules one of them will spin with pliers but the other one won't. I need some help please guys......

[Dmichels]

The side of the ferrules have a tab that digs into the drain tube when you try to remove them. Try to bend it out a little. They are a bitch to get off. Now off to the heater tubes Try to heat the tubes at the o-rings to soften them up. Don't worry if you burn them you will replace them anyhow.
Dave

[fatboy]

Thanks a lot Dave.
I finally got the sucker apart without breaking it thanks to you. I appreciate it!
Lee