Do anyone have a good write up on replacing the AC expansion valve on a 06 x5 3.0?

I saw some info on this forum with links however the links no longer works.

I replaced my condenser, evaporator, all ac lines and condenser fan. The only part I have not done is the evaporator. It is hard for me to believe I have to remove the entire dashboard to install a $50.00-100.00 part.

Any advise will be appreciated.