Since my recent fire I have been trying to salvage some tools and my air compressor is one of them. It's a 20gal. Air Pro from HD with a belt drive and has been a great compressor but since the fire I turned it on the other day and it wanted to keep running. I noticed the regulator guage isn't working but the pressure guage is and it usually shuts off at around 120-125(or somewhere around there). I ended up cutting it off myself at 140. What could be the problem? It reads on the side of the tank that the max pressure should be 125 and I really don't want to blow it up. Other than not cutting off it runs like it always has.
Donny