Our coach has two toilets; an electric gravity toilet in the mid bath (that spins a ball to dump straight down into the black tank), and an electric macerating toilet in the rear bath (that uses a bunch of water to pump the waste forward to the black tank).

The mid-bath toilet has a lever on the side of the toilet: pull up to add some water (to help flush solids), and push down to flush.

However, while adding water worked fine, flushing became unreliable. Sometimes it’d work immediately, sometimes one would have to hold the lever down for several seconds.

I researched the unit, and determined that the flush switch was likely the fault. So I ordered a replacement.

Here’s the switch behind the toilet, after I pulled the insulating covers away from the pins. This switch is toggled upwards to flush by the rotation of the lever, or downwards to add water:

The aforementioned lever:

I pulled the wires off the pins of the old switch, and tried connecting to the replacement switch (hanging down); it worked perfectly:

I wore my headlamp to see behind the toilet:

Having determined that the new switch worked, I worked on removing the old switch. It was mounted to the porcelain toilet with three screws under the handle:

Getting those screws out and back in again was the hardest thing, since the toilet was so close to the wall. I tried my drill with an angle bit, but it was too close for that, too:

I managed it by unscrewing the hard way — holding a screw bit in pliers, for leverage:

(I need to get a short screwdriver!)

Another look at the switch:

Replaced the handle; it works!

An assortment of tools for this repair:

It was very satisfying to fix this. Things break in even the best RVs; they’re an earthquake on wheels. Over time I’m sure I’ll build up new skills in repairing and modifying things, just like I did in the homestead. Just a new set of skills.