6 hp 33 gallon Craftsman Oil Free Air Compressor 240V. I got this unit
used, was previously used for spray paint duty by a homeowner, so it
did not get much service. Looks new, actually.
It takes quite a while to pump up to a max of about 90 psi (should be
able to go to 125 psi). When I try to run tools on it, even ones well
within the demand of the unit (sorry, don't have that info handy, but
something like 11 cfm at 90), it quickly peters out, the compressor
runs, but just can't keep up. The filter material is clear, actually
run it without one to see if that was causing restriction. If I set
the gage low, say 60 psi, it pumps up to it and stops, and will
actually hold pressure, I did this and it held for 2 hours, so there
isn't an obvious leak.
So the compressor has gone weak. Are these types of compressor's
rebuild-able? It is craftsman, so parts should be available, just
wondering what might be the cause of the compressor not having the
power to do its job, worn cylinders maybe?