Fixing a camper toilet leak: a step by step guide

is your toilet losing pressure
or running constantly?

Have you ever lost water pressure in your toilet when trying to flush? Or does the toilet run water constantly? In either one of those scenarios there is something wrong and we are here to help diagnose and fix the toilet leak.

Luckily, RV toilets are simple. There are only a few parts to them and they can be replaced without having to replace the entire toilet.

know what you are looking at & how it works

for most RV toilets, there is a pedal that flushes the toilet. Attached to that pedal assembly is everything that makes your RV toilet work (this part is the toilet water valve). The water line connects to the toilet valve. The water to the toilet will either come from the wall or the ground behind the toilet.

When you press the pedal to flush, the pedal presses a spring loaded button on the valve. When the button on the valve is depressed it allows water to pass through the valve into the water line going into the toilet.

tools needed for the Toilet Leak project

Valve replacement

After using a toilet for a while the toilet valves can start to lose the stiffness in the valve spring. When that spring becomes weak, water may begin to leak into the toilet and water will run continuously in the bowl.

After enough time and break down of the valve, water may also begin to leak onto the floor behind the toilet. When this happens, it is time to replace the whole valve. To replace the valve and fix a toilet leak, follow these steps for an easy replacement.

  1. Turn the water off to the trailer
  2. Open low point valves on the outside of the trailer
  3. Remove the water line from the back of the toilet valve
  4. With the mini Philips screw driver, remove the small screw holding the valve to the toilet
  5. Unscrew the pipe clamp holding the toilet water line to the valve
  6. Remove the broken water valve from the toilet

NOTE: If you need time to order a new part and still need to have water to the trailer, the water line that feeds the toilet can be capped with a ½” PVC cap to allow you to turn the water back on until you receive your new part.

installation | the new valve

  1. Place the new pipe clamp onto the water line coming out of the toilet and install the line onto new valve and tighten the pipe clamp
  2. add plumber’s thread tape to the threads of the new valve
  3. Screw the new valve onto the toilet
  4. Attach the water line to the new valve
  5. Turn water on and check the toilet for leaks from the water line area

Now that the new toilet valve is installed and there are no leaks, the pedal should be noticeably stiffer and there should be no water running into the toilet bowl.

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