Should I consider pulling the oven out or the breaker and converter or just work through the small opening to replace the water pump?
No , the cabinet under the range has plywood . Easier to unplug the RV , remove the cover from the breaker box , and then unscrew the breaker box and pull it out about 8 to 10 inches . That should give you enough room .
Prolly get to it thru the cabinet on the left. Might be a partition you have to remove.
I did to change my water pump. The oven in mine was held in by 3 screws per side along the top sides and one simple gas connection in the rear. After that it slides forward and out. It is not that heavy.
Mine did sit on a shelf which I had to remove and re-staple down.
Oven out and water pump in lower right
I would remove the electric panel before removing the oven..
That’s funny. Just this morning I was bitching about working on my water pump I finally found behind my three kitchen pull out drawers. You’ve got it worse. I feel better… sorry.
There’s no rhyme or reason as to where they put water pumps.
I pulled my oven when I redid my counters and cabinets. It’s not as hard as you would think. It does open up all the space below.
Biggest thing to remember is to leak check your gas hose when you reconnect it. Some plumber pookie on threads doesn’t hurt.