Sorry for my misunderstanding. There should be no need to physically remove the pump just to get the make and model number to get the replacement. If you can access it, the number should be visible. In the meantime, the system is still usable until you actually have to do the swap.
HelenR, before we go off on a tangent, it's unclear as to why the information is needed. Can you enlighten?
Current: 2013 Flagstaff MicroLite 21DS
Past: 2000 Fleetwood Mallard 19N
TV: 2013 Nissan Pathfinder SL 4x4