How to Replace RV Holding Tank Fittings

Lead Image
  • 1-3 hours
  • Beginner
  • 25-100
What You'll Need
Plastic fittings
Wrench (adjustable)

The RV holding tank is the component responsible for containing all the accumulated waste water before it is dumped in the appropriate stations. Each of these contain fittings with several functions, including prevention of overfill, which ensures that waste water is contained within the tank system. Worn out or damaged RV holding tank fittings may not be effective in performing required tasks, making replacement necessary. Here are steps on how to replace the fittings of an rv water holding tank.

Step 1 – Finding the Tank Position and Identifying the Fittings for Replacement

Based on the design of your RV, find the spot where the holding tank is placed. You can refer to the design plan of the RV for this. Check on the holding tank and determine which fittings needs replacing. Procure the same size from an RV shop. Be sure the tank is empty before removing fittings. Remove the old fittings by removing the screws that keep them in place then loosen them using a wrench.

Step 2 – Install New Fitting

Once the old fittings are completely removed from the tank, insert in a new set and tighten the fittings by replacing all the screws or nuts that were removed earlier. Be certain not to tighten the fittings too much as it may cause damage on the connection points.

Step 3 - Finishing Up

For best results, first hand tighten the fittings into the connection points, then using an adjustable wrench, give each fitting no more than a 1/4 turn.