Credit: h0ldem_8o8

Helpful Tips:

Remove ac blower/fan first (it’s the white one to the right of the black box (a/c expansion chamber) then remove expansion chamber.
Be sure to remove all screws holding the “black box” (a/c expansion chamber/valve housing) first! don’t muscle your way and pry it open with brute force!
When putting everything back in, remember to completely reassemble the “black box” (a/c chamber housing) first then put everything back in.
This is time consuming, and removing/replacing the a/c chamber housing is a b*tch, practically no room to take that thing out.