Brake pedal goes to floor after replacing brake caliper on the rear.

Hello,

Anytime a caliper, hose or master cylinder gets changed, the brake needs to be bled to get the trapped air out.

Here is a helpful guide on how to properly bleed the brakes:

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

I have attached the brake bleeding sequence for your Lincoln below.

Please let me know of any questions.
Thank you.