Repair 7

How to Repair a Waste Holding Tank Sensor

There are two types of water tanks installed on RVs. The gray water tank refers to the holding tank that catches water that runs from your RVs sinks and shower. The black water tank catches waste water that is ejected from your RVs toilet. RVs have tank sensors which monitor the amount of waste water inside your black water storage tank. This sensors let you know when it is time to empty the tank. These sensors do wear out and fail sometimes. If this happens, they should be replaced.

Instructions

1

Drive your RV to a designated waste disposal center and empty out your black water tank.

2

Park your RV on a flat surface and turn on the emergency brake.

3

Locate the sensor attached to your black water tank. It is mounted to the side of the tank.

4

Push in on the two tabs on the side of the old tank sensors electric wiring harness. As you depress these two tabs, pull the sensor wire plug out of the back of the old sensor.

5

Place your wrench over the bolt built onto your old tank sensor. Turn it counter-clockwise, or to the left, to loosen, then remove it.

6

Use an old rag to wipe down the area where your new tank sensor will be installed. Clean off the end of the electric wiring harness by wiping it with the rag. Thread the new sensor into the hold. You can do this by hand to get it started. Slip your wrench over the bolt part of the sensor and turn it to the right to tighten it firmly. Once it is tight, plug the electric wiring harness into the new sensor.