Hi.
Based on your hull number, I would say that you do not have sealed wheel bearings. They should be inspected and greased annually.
As for the fridge, I'm assuming your gas is turned on at the tanks. How long have you waited for the fridge to cool? It takes a long time, usually overnight, before it will reach temperature. You'll feel it at the back of the freezer compartment first. If it's been longer than that with no cooling, can you hear the flame running behind the lower outside vent door? Usually, you would hear a clicking sound as it tries to light, followed by a very soft noise from the flame. This is not constant. Once the fridge reaches temp, the flame will cut in occasionally to maintain that temp.