toilet seal

[huskyfan68]

in 20+ camping years- never saw this (or had this issue)
My RV toilet does not hold water- (it flushes)- but i know I've always hit the foot pedal slightly and filled up the bowl at times-
It works but does not hold water until you flush it (then the waste geos down)- Is this just a bad seal in the flap (or whatever it's called at bottom?)

[HappyKayakers]

mbopp wrote:

Ron3rd wrote:

HappyKayakers wrote:
Recently had the same problem with mine. Thetford Aqua Magic II. Had to turn off water, disconnect lines, remove toilet from floor flange. Flip toilet upside down, separate toilet in the middle and replace seal. Reverse steps. If you get the seal kit, also replace the floor seal at the same time.

Depends on the model. On my Dometic with the China bowl, you just hold the pedal down to move the ball over and reach in and pull the seal out of the groove. Takes about 20 seconds if you're very slow.

Other models might require some disassembly.

Why did you have to remove it from the flange? I thought you could separate it while still bolted down. And I watched one video where no disassembly was required to replace the seal.

I suppose a contortionist could've done it without removing but I'm not that limber. It's just too **** close to the wall.

[MNRon]

On a prior 5er, the pedal started to immediately open the hole as well as the bowl not holding water. The fix was to tighten the bolts compressing the seal better (additional resistance on seal would allow bowl filling function to work without opening hole, and additional compression sealed better). Worked for few years after tightening until we traded in.

On our new 5er, I let the bowl dry out when storing and it started leaking (not holding water). I cleaned seal and lubed with vegetable oil. It worked fine again. Since then (a year or more ago) when storing for more than a couple weeks I empty and place 1/2” of vegetable oil in toilet. It doesn’t evaporate, and keeps the seal lubed. Working great.

[Mickeyfan0805]

Ours did this a few years back. As other have said, I cut the water, stepped on the pedal, removed the old one, then lubed and installed the new. It can be a bit tricky to get everything lined up perfectly, but it's not too hard or time consuming.

I will say that I had to lube the new one a once or twice a year to make sure that the cap will fully close when releasing the pedal. It has a tendency to stick.

[mbopp]

Ron3rd wrote:

HappyKayakers wrote:
Recently had the same problem with mine. Thetford Aqua Magic II. Had to turn off water, disconnect lines, remove toilet from floor flange. Flip toilet upside down, separate toilet in the middle and replace seal. Reverse steps. If you get the seal kit, also replace the floor seal at the same time.

Depends on the model. On my Dometic with the China bowl, you just hold the pedal down to move the ball over and reach in and pull the seal out of the groove. Takes about 20 seconds if you're very slow.

Other models might require some disassembly.

Why did you have to remove it from the flange? I thought you could separate it while still bolted down. And I watched one video where no disassembly was required to replace the seal.

[Ron3rd]

HappyKayakers wrote:
Recently had the same problem with mine. Thetford Aqua Magic II. Had to turn off water, disconnect lines, remove toilet from floor flange. Flip toilet upside down, separate toilet in the middle and replace seal. Reverse steps. If you get the seal kit, also replace the floor seal at the same time.

Depends on the model. On my Dometic with the China bowl, you just hold the pedal down to move the ball over and reach in and pull the seal out of the groove. Takes about 20 seconds if you're very slow.

Other models might require some disassembly.

[HappyKayakers]

Recently had the same problem with mine. Thetford Aqua Magic II. Had to turn off water, disconnect lines, remove toilet from floor flange. Flip toilet upside down, separate toilet in the middle and replace seal. Reverse steps. If you get the seal kit, also replace the floor seal at the same time.

[time2roll]

Mine started leaking recently after 15 years. By the time I pull it apart you can bet I am putting a new one in. Amazon delivered the new seal a couple days ago.

[huskyfan68]

thank you!

[Ron3rd]

Take the seal out of its groove and clean it and the groove. Then lube the seal with vegetable oil and see if that cures it. If the seal is simple to replace

[midnightsadie]

maybe a good cleaning will fix it.

[huskyfan68]

ok wasn't sure how difficult it was to replace/do the work.
thanks-

[ksg5000]

Common problem - should be lots of threads on the subject (use the forum search feature). Sometimes cleaning/lubing the edges of the sliding mechanism works ... sometimes not.

[K_Charles]

Yes