I recently acquired an older Quincy air compressor, the tag reads "A4 7 210058 Size 2 1/2 X 2 1/2." I called my local Quincy dealer, who unfortunately is not very local & mainly deals with commercial accounts. All they were able to tell me was that the pump was obsolete.
What I am trying to find out is:
1. General specifications, including correct rpm range.
2. Parts diagram
3. Availability and price of service parts (gaskets, rings,valves, in that order)
4. Diagram/explanation of the separate unloader assembly that seems unique to Quincy compressors. Parts list also.
5. Some idea of what size motor this unit needs. It had a large, old looking motor that did not work when I got it. I suspect a real 1-1/2 or 2 hp 1725 rpm motor would be okay, but would like confirmation/correction.
Any advice/help is appreciated.