We lost the water pump 1500 miles into a 3000 mile trip this month. Since our unit is still under warranty it should be covered. Thor sent me to a shop very near my breakdown location in Southwest Texas. The shop showed me shavings from drilling the input and output holes into the freshwater tank.
They said they were inside the pump and filled the line going onto the pump. I had just emptied old fresh water into the black and gray tanks so help clean them before dumping. I think the shavings usually float but since I had used the pump to empty the fresh water tank the shavings entered the pump as the water emptied.
I am sure there are till shavings in the tank but as long as you don;t empty the freshwater by using the pump it should not cause a problem. There is a filter for water entering the tank, as noted by another poster but no filter for water leaving th tank through the pump.
The shavings were the same color as the freshwater tank and were obviously from drilling the input/output holes. I have a handful that the shop saved to show me.
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