Haier A/C taking out

[jb2341]

I have a Haier A/C in my Viking OTD12. It is a wall unit that started leaking into the trailer on my last trip out. I wanted to remove and see if the drain was plugged, but unsure how to remove. It looks like it would just pull out but wanted to check so I don't do more harm than good. So I thought I would check here and see if anyone has removed the unit from their rigs.