Hello, I’m completely new here and need your help right away. We have a Thetford C2 toilet flush for our TEC. The water flush is triggered here electrically on the right by “pressureing” after opening of the waste tank. Since this was no longer the case and the fuse is intact, I assumed that this is the pump. So I ordered a replacement pump for this and also installed it immediately. Unfortunately, the pump still does not work. In the shaft for the waste tank I found a defective insulation with the help of my camera (picture 4). Is this possibly the reason? Only how could I fix the damage there, since you can’t get there as good as possible? I hope you can help me!