Saniflush leak

[mbstrain]

We have developed a leak when using the Saniflush. Cannot see where it goes into the black water tank to check for leak up there. Any ideas?? 2005 35 foot Adventurer. Thanks

[Morich]

Incomplete info ! 35A or 35 U?
This is a link to the 35A and possible it is also the same on 35U???
http://www.winnebagoind.com/service/...05/5wpg35a.pdf
Page 237 shows the stool but what part is suspect? If where the stool sets on the floor there are two parts involved, items 12 and 20.
Probably best to remove stool and look at those as it appears to be straight shot down to tank. Do you see directly into the holding tank when looking from above down through the stool?

[mbstrain]

Stool is no problem, it's a leak of fresh water when using the Saniflush only. We can't see where the piping for saniflush goes into the tank. Must go into the top. Can see all around tank, just not top.