During a two week vacation in the GMC with a family of 5 ending
last week, I found myself dumping the tank a lot. We were traveling through
the north east and found that hardly any campsites had drains that worked
well with the black snake hose. The configuration on my coach had been modified
so many times it was almost all elbows. See pictures:
So I decided on the macerator and new plumbing to the rear for
emergencies or for long stays at a single campsite. I choose the Jabsco
macerator based on net recommendations and its sale price of $99 at West
Marine. I used stock ABS parts from Lowes.
You can see in the next picture I made a bracket to hold the
pump that bolts to an existing hole in the frame with a single large bolt
and fender washers.
This picture shows the angle of the street tee and reducer to
get to 1.5 inch. I sink tested the angle to make sure that any water that
gets through the thetford valve on the tank witll make it to the hose. Since
the pump is higher it creates a bit of a trap. Hard to tell if this will
collect solids and clog. The pump seems to have no problem drawing from
the tube when the tank has something in it. I really don't want the pump
or any plumbing lower than my frame.
Also note that the clear hose allows me to "see" what
is threre before the pump. Also note the white nylon hose adaptor. It can
be removed and a 1.5 inch cleanout plug inserted to remove the macerator
and leave a functioning system.
The next shot shows from under the drivers side. I decided on
another waste gate... one before and one after the macerator. This gives
me the option of unbolting both gates and dropping the entire section out.
Lastly, I decided for the under the bumper hose storage. I considered
many locations including the generator space "wrap" but decided
on this method to keep the hose to the least number of touches... Keeping
in mind my wife and kids saying "gross, Gross, GROSS!" every time
we dump :-) On/Off switch located just under the battery compartment in
an existing hole in the frame. I used 12 gauge wire and an inline 20 amp
fuse hanging off the solenoid in the battery compartment.