Originally Posted by Pack Mule
We have the Jabsco quiet flush although it doesn't seem so quiet . This is my first electric head so maybe I don't know how quiet it's supposed to be . I need to listen to someone else's .
Might depend on age... Ours started getting louder at approx. the 9 year mark, and then we also started seeing a slight leak around the shaft seal.
After trying a partial rebuild (inexpensive parts, in their "service kit") -- no improvement in noise and it still leaked a bit. I talked to the Jabsco folks after that, and they allowed as how I had probably gotten my money's worth. Over time, wear and tear on the chopper plate (part #14), macerator (#16), macerator housing (#15), and the motor shaft itself increases tolerances, adds to noise, etc.
(And the still-leaking part was probably because I hadn't replaced the "slinger" -- but that would have been more work, and wasn't included in the service kit for some reason... so I hadn't known I might need it.)
Anyway, bottom line was that -- rather than ordering "slingers" and then tearing down/rebuilding again
and then still probably having excessive noise to enjoy...
$170 later I had replaced the whole pump/motor assembly and that was a LOT easier than fooling with the crappola (service kit) and it was a LOT quieter (again) afterwards.