Bird Freak wrote:
TrickyRicky wrote:
All fifth wheels have a separate grey tank for the kitchen sink because of the difference in height to the bathroom. How long have you had this rig? Did you ever see an additional 3rd dump valve outside maybe at a different location than the other 2. I would start by looking for that dump valve and if try draining that tank. I am assuming this is a new unit to you and this is the first time the sink has backed up.
This is so wrong! we have 3 5ers in the family, none have but one gray tank. I know some do but not all.
So nice of you to point out my mistake . Do the 5ers in your family have the shower and bath sink on the elevated goose neck portion of the unit. What brand,year, and model are these 5ers.