I have a large Samsung 4 door refrigerator. One of the rear wheels broke. To replace it, you need the wheel and the shaft. To lift the refrigerator for the repair, I had my wife stand in front of it with her foot on a board that was wedged against the front wheels. I then pushed the refrigerator up from behind and slid a 3/4" piece of plywood underneath the bottom with my foot. This gives you enough space to do the repair. After removing the back cover, it's best just to knock out the broken wheel with a chisel and hammer. This exposes the center of the shaft where you need to cut. I used a Ridgid Jobmax with a bimetal blade to cut through the shaft. This is the worst part because the shaft is solid metal and it took a little while. After the shaft was gone, I removed the bolt and rubber cushion that hold down one corner of the condenser. Unfortunately, you have to do this in order to slide the new shaft in, but it is easy to put back on. I put the new wheel and shaft on and crimped the end of the shaft with a pair of pliers, and that was it.