While bleaching & flushing our "never-poop" waste tanks at home for the winter, the macerator pump had jammed. I got a screw driver and with a little encouragement, worked it free by turning it back and forth with only a little force. A few seconds of run time more and it jammed again. After a second attempt to free it, the pump ran fine. Once finished, I do as always and worked the water out from the hose. Suddenly out comes two identical pieces of flat black plastic about 1" x 1/2" rectangles with a raised rounded edge on one side.
Are those two plastic pieces off the macerator, or should I assume they came from elsewhere? They are identical, seemingly not torn, cut, or broken off something, too perfect and identical. Since I never had the macerator off our rig, I don't know if they belong to it. I can't rule out that they may be manufacturing debris that finally found their way to the pump. But it has been 7 years so you'd think they would have found their way out sooner.
Any ideas? Has anyone here had a similar experience? Almost always, the end of your hose will be in a dump station sewer, not on a driveway to observe plastic things coming out.
If I need a new pump, I assume the best place to buy one is direct from Phoenix.
ADDING: Hey, I just found a picture of the black plastic pieces. They look like segments of this pump part. I might have answered my own question.