Originally Posted by cadillac_al
It sounds like basic plumbing that could be done by any handyman. I don't think it needs to be done my an RV specific repairman. You may be able to find a handyman on facebook. Good luck.
Thanks for the reply Cadillac. I'm embarrassed to say that I retired from the marine industry. I delivered, surveyed and repaired boats. So I AM that handyman you're speaking of. I guess I pulled the trigger a little too fast on this one. I'm new to the RV "thing". After thinking about it, I purchased two gallons of RV anti freeze and poured into the shower drain and then waited. Sure enough the water turned color. I knew then it had to be related to the shower drain. Getting to it was my biggest issue (so I thought). My unit is an '07 Newmar DSDP and has an outside TV in a lower bay right under the shower location. So....out came the tools. I removed the TV, then there is a fascia around the TV which had to be removed for access to the rear panel. I thought I would have to remove the entire inside panel, but Newmar was kind enough to cut a slot at the top just large enough to get your hand into and reach the drain (I have to assume they knew this would eventually require repair). I took my flashlight and looked in side. VOILA! The standpipe coming from the shower to the tank had popped up and was delivering grey water half in the tank and half outside the tank! There was NO sealant on this drain fitting! I slathered with sealant and pulled it over toward the tank fitting and it popped right into the fitting and then I push/pulled down with what leverage I could and it went down into place. I then slathered more sealant all around the edge of the connection. We waited and hour and the wife then took a shower. Problem solved! AND saved myself hundreds of dollars. But thank you for the reply to my request.