I have a 36MQ. If yours is situated like mine, you'll have to pull the grey/tan plastic grill off of the bottom of the fridge. Behind that, there's a stamped steel plate with 6 or so bolts that you'll have to remove. That'll take care of the front. Now, around back (outside of the rig) I have a small door that accesses the shut off valve for the ice maker. Inside that door, you'll be looking at the back of the fridge. There's a piece of angle steel that bolts to the floor & the back of the fridge with a number of bolts. I removed the bolts into the fridge since I thought it'd be harder to line up the holes for re-assembly thru the carpet that's beneath the fridge. (-still wondering why Thor puts carpet beneath the fridge)
Also, measure from the tile floor to the level of the slide out that the fridge sits on. Make yourself a platform to keep the fridge at approx. that height. ( I think I used 2x4's & 3/4" plywood) I rolled the fridge out of it's hole in the slide & onto that platform. The reason is 1. I wouldn't have to "drop" the fridge down & then lift it back up. & 2. I would protect the ceramic tile.
Good luck, It's not that bad of a job. I botched the same thing in the winterizing procedure & froze/cracked the "recepticle" that the water filter goes into.
2012 Thor Astoria 36MQ
Butter Toffee on Toasted Almond
'96 Cherokee toad Tim, Dar & our black Lab "Chase"