Pentair Pool Pump Rebuild

Gathering info rebuilding our Pentair (011018) InteliiFlo Variable Speed pool pump. Parts diagram was easy to find. Pentair seems to sell a seal kit, but I plan on getting a new impeller as well. The parts diagram doesn't specify the bearings in the motor, so I am hoping to pin that one down and order them ahead of time.

The issue I am seeking a little guidance on, is that the underside of the pump motor is getting its ass kicked. I am not sure if it's improperly grounded (there is a grounding wire attached to the other side of the picture below) and this is the result of some sort of electrolysis, or if because the original installation didn't include a proper concrete pad under the pump/filter/heater location, and the paint is just on the struggle bus.

How can I safely test the ground wire?

Any suggestions for repainting? Obviously once I have the motor torn down for the bearings, I can just wire wheel the housing and repaint it. Epoxy paint seems to be the suggestion, but I'm finding very little in the way of a tangible product I can pick up or buy online... I don't really care what color it is, I just don't want this pump to degrade further into full replacement.



Obviously at some point in the near future I'll be pulling the equipment and installing either a concrete slab, or it's also been suggested that a fiberglass grate over gravel would be more effective than the broken concrete stepping stones the equipment is currently sitting on... But that's going to some considerable effort and repumbing once all three things are actually sitting in the same plane.