Excellent video,brought my caravan out of storage and the same thing happened,done this and hey ho worked straight away,thanks very much, as you stated it would have probably cost me a small fortune to get somebody to look at.
Thanks for posting. This happens with my pump every winter. It's a pain to take it all apart, but only takes 7 minutes start to finish. I use needle nose pliers to rotate the shaft. I think I'll flush (!) mine through with a few pints of water at the end of season, so no gunk can form.
Looking at the state of the pipes when you pulled the pump out, the inside of the tank needs a good clean or it will happen again. I took the pump out completely and soaked it in a bowl of water with added Miltons overnight. I then filled the tank with water adding 3 capfulls of Miltons and left it to soak for 48 hours. Drained the tank, then using my garden sprayer which has a long thin nozzle, set about scraping and spraying off the black gunge from the inside walls of the tank accessing it through the hole in the top of the tank that the pump came out of. The garden sprayer nozzle was set to the jet position rather than the misting position, so it acted like a mini power washer! Constant flushing and draining followed and by the time I'd finished the tank was looking much cleaner. I now plan to not add any more "pink stuff" to the flushing tank, and only use clean water. The other option is to have a hand sprayer filled with pink stuff next to the loo, and flush the bowl by hand to prevent the tank clagging up again. Hope this helps?
Hi , as in the video check if the end of the motor , the pump bit , is actually turning . Also make sure the pipe on the motor is connected and not blocked . Hope this helps , good luck