Sorry. No pictures. But it is so easy you will have no issues. Don't be afraid to open the bottom of it up. There's nothing you could ever screw up.
The bottom is just some door skin plywood screwed onto the studs.
Just take those screws off working from front to back with the truck camper close to the ground. The plywood has enough flexibility in it that using your knees you can take the stress off of the remaining screws as you work your way back. Before you know it, the whole bottom is off really easy.
From there, it is just insulation between studs like you would find in any normal home. Standard insulation.
Just slide that insulation out of place, and everything in your entire basement is exposed and ready for you to work on.
I would recommend emptying the tanks before you do this. Just in case something is loose or you start making modifications that take the support away from the tanks. You don't want one of them falling down on you. When they are empty you could move them with your pinky finger.
There is absolutely nothing tricky about doing this at all. I was scared at first too, but once I opened it up I realized there was nothing at all to be scared about. There is nothing you can't put back together very easily.
Just stuff the insulation back into place and screw the door skin plywood back into place and you are good to go. Everything else is all held in above the studs.
Actually, since it's a floor, I guess they would be called joists not studs.
If you have any questions about the process, just let me know.
