How to Install a New RV Toilet

Installing an RV toilet may not be the type of project you'd choose to do under ordinary situations. But sometimes you may feel that it is something you'd rather do than hire an expensive plumber to do the job for you. It is also possible that when a toilet needs to be replaced, there are no plumbers available, in which case you'll have no choice but to do the job yourself. Though it may not be a pleasant project, you can get it done with a good set of instructions and the right materials and tools.

Tools and Materials Needed:

  • Adjustable wrench
  • Pliers
  • New toilet
  • New toilet seal

Step 1 – Make Preparations

Before beginning to remove the old toilet, turn off the water to your toilet. You can do this at either the valves you're likely to find between the toilet and the wall near the toilet. Or, shut of the main water valve regulating water flow to your RV. When you're sure the water flow to the toilet is stopped, then flush the toilet. If you fail to do this you can expect to flood the floor with water from the toilet tank when the tank is disconnected.

Step 2 – Disconnect the Toilet

Locate the plastic cover on the bottom of the toilet near the floor. Remove it by lifting or pulling it outward and away from the toilet. There may be more than one of these covers. You'll need to remove both in order for you to reach the bolts that secure the toilet to the floor. Locate these bolts and unscrew them, freeing the toilet from the floor. Locate a hose that supplies water to your toilet. You'll be disconnecting this hose that has retained a small amount of water. If you'd rather not have this water on your floor, place a towel or large rag on the floor to soak up this water. Then, where the hose connects to the toilet, disconnect the hose.

Step 3 – Remove the Toilet from the Floor

The toilet will be sitting on a ring that seals off any moisture draining from the toilet. Sometimes this seal is one made of wax. Lift the toilet up to free it from the ring. You may need a helper to hold the ring down to keep it from lifting or breaking if it is stuck to the toilet's bottom surface.

Step 4 – Install the New Toilet

Set in place on the floor the ring (seal) that came with the toilet, where the old ring has been removed. Position the new toilet in place on top of the new ring. Be sure that the bolts in the floor are inserted through the proper bolt holes in the toilet, and that the ring doesn't move as you're positioning the toilet. When it is correctly positioned, replace the nuts over the bolts. Tighten them securely so that it they will seal the toilet to the ring. If they are loose, your toilet will likely leak sewage onto your floor.

Step 5 – Reconnect Hose and Water

Connect the water hose to the toilet, being careful not to over tighten it and strip its threads. Turn on the water and make sure there are no leaks.