Remove the RV toilet
The first step should be to remove the toilet in order to determine whether this is a problem with the seal or with the floor flange itself.
The toilet can be removed by following these steps:
- Black tanks should be drained and rinsed.
- As soon as the toilet is removed, prepare a location for it to be placed. As soon as the toilet is removed, prepare a location for it to be placed. Use some cardboard or old towels to protect surfaces in the RV if it’s in the RV.
- The city water and/or the water pump should be turned off. Release any remaining water pressure in the toilet’s water line by flushing it.
- From the back of the toilet, remove the freshwater line. For this step, a small mirror can be helpful.
- At the base of the toilet, remove the two bolts. Set the toilet down in the prepared location after lifting it off the flange bolts.
Carefully inspect the floor flange
Cracks, warpage, or improper mounting or screwing/gluing of the floor flange to the pipe will indicate problems. Take your RV to an RV repair facility if you find any of these problems.
The gasket is most likely the cause of the problem if the flange looks fine. The gasket should always be replaced whenever the toilet is removed from the floor flange, regardless of whether there is a problem with the floor flange. You should be sure that you get the right type of gasket for your RV toilet, since most of them have foam gaskets instead of wax rings like residential toilets. You can order gaskets from Amazon or pick them up at your local RV dealer. Don’t mount the gasket on the floor flange; mount it on the base of the toilet.
Reinstall your RV toilet
- Make sure the mounting holes of the toilet are aligned over the T-bolts before slowly lowering the toilet.
- Install the nuts on the floor flange to resecure the toilet. The toilet could be damaged if the nuts are overtightened. Make sure the toilet doesn’t wobble by sitting on it. Tighten more if needed.
- Do not cross thread or overtighten the freshwater fitting when reconnecting it to the toilet.
- Check for leaks once the water has been turned back on and flushed.
You should no longer have a leaky RV toilet at the base after doing this.
A rather zany video will guide you through these steps:
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