Bringing this post back as husband has been contemplating replacement of both black/grey dump valves for a year. We just returned from a short trip in the Minuet and when we stopped at dump station, before he could attach hose, the black tank dumped sewage on ground. So, we know it needs doing, the question for him is pay someone or try this himself.
He purchased 2" waste valve replacements made by Valterra (part #T1002
VPM) at Camping World. Not sure if these will work. Also, to him it looks like the rear belly pan must drop in order to reach the valves? That seems like a major job to him, which is why he is contemplating taking it in for the work. Can someone help set us straight on how hard this task is, amount of time involved, whether he purchase correct replacement parts, and if belly pan must be removed? Also, if you have any tricks of the trade to impart that will make job go smoothly, that would be much appreciated. THanks!!!!