Yes I have the second slide out out now on a coach with rotted floors. Lost track on how many I've had to put and repair something. Although, sometime a roller can be replaced without having to pull the slide out. I would have to see how it was installed. You can drive the room up onto wedges an inch or so to get a look underneath. Many rollers have a spring loaded axle that can be pressed in and removed if you have enough head room and can reach it.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7