Holding Tank Diagrams - 2001 Monarch 34PBD
Anyone know how to obtain some holding tank/plumbing diagrams/drawings? I have a 2001 Monarch 34PBD, have a black tank dump valve that leaks, and lately I have also been noticing a somewhat offensive odor coming from somewhere... doesn't even stink when you are in the bathroom, it is noticeable just from the hallway/bedroom areas, so I think maybe black tank is backing up into gray line or something, but can't figure out how to even reach the valve to replace.
2005 Winnebago Adventurer 35A
Workhorse W22 8.1L