When doing the brake pedal adjustments (when removing the MC from the booster) does the fluid need to be drained from the Reservoir?

It looks like if I remove the 2 bolts and seperate the MC from the booster fluid will drain out everywhere....true?

 

No, you do not have to break open the brake lines. There is no fluid between the booster and the MC. If you have not read all this thread, you need to do so. Especially pay attn to post number 5.

https://www.f150online.com/forums/20...-resolved.html

 

This is from the same thread and should help.

https://www.f150online.com/forums/2526542-post33.html