LK23 gives a good description in the link below. You don't mention your coach or age but you may want to have some extra hose in case you want to replace it when you get it apart. I bought hose pinch off pliers that make it a little easier.
There are a lot posts on IRV2 about this.
Paul, Christy and Leap
2017 Dutch Star 4018, 2017 Jeep Wrangler