Back flushing water lines?

Well, partial success is better than none. Unfortunately, having a 179, I can't help you with the location of the pump on the 177. Try to use the sound of it to zero in on the location if you can.

On some HRE 177 I have heard of the water pump being under the bed. Just remove the 4 screws holding the luan sheet down that the mattress sits on, and you can access it. That is also where your water heater is. Most 177 owners pull the bed panel, and cut the section over the water pump etc free, and secure it separately with new screws, so the couple times a year they need to get in there, it is much easier.

Originally posted by cgarb What a strange place to put it. Herniated disks are going to keep us from wrestling with the mattress, unfortunately. Even a few months ago we could have done it. Thanks for the info, though!

I do not know why they put it there on SOME 177's at least 99% of them I have dealt with, it was under the sink. But, a few we know for sure that is where it is at. I actually thought it a good place, since generally, the only time you mess with it, is winterization and de-winterization.. and you need to be in there to set the bypass valves anyways..

Problems solved! I called the service dept where we bought the pod and he said that there is no screen/filter on the system unless we add one ourselves. He suggested using an air compressor, at low pressure, to blow down the water pipe going to the toilet to break up any obstruction. It worked! When we turned on the  pump again, a lot of grit came out with a great water flow!  Now the whole system is grit free, for at least a while, and is working fine.