Toilet bowl slowly fills

[davem1958]

I have a Holiday Rambler Vacationer motorhome, 2006 model, been full-timing for 2 1/2 years.  Lately the toilet bowl is partially full when I come home from work (yes, still working), I'm guessing because the valve doesn't completely close when I take my foot off of the pedal.  Is there an easy fix for this, or is it time for mx?

The toilet is a Thetford Aqua-Magic Style Plus.

Is there an overflow on these, or will it eventually spill onto the floor?

Thanks!

Dave

 

[Gary RV_Wizard]

Yes, the valve is leaking. It can be replaced, if you can squirm around behind the toilet to get at it. Some valves can be rebuilt (it's usually just an O ring that failed), but replacing the whole valve is the usual repair.

The Thetfords used to have an overflow hole under the rim. Don't know if they still do, since I haven't worked on one in 6-7 years (I have a Sealand toilet). They used to be a common source of odors leaking back into the coach after the P-trap dried out, so they may have eliminated it.