Not sure what bolts you want to tighten, but.... The fridge can be pulled out on the inside. To do that you need to first is close both of the gas tank valves and unhook the gas line at the fridge. Then unhook the 12V and 120V electrical supplies on the back of the fridge. From there remove the screws on the front trim. The fridge should slide out as needed to reach whatever you are accessing.
2012 Rockwood A122S
2008 Toyota Tundra Double Cab 4X4
Former owner of a 2002 Coleman Niagara GTE