I acquired an old 1/2 HP Campbel Hausfeld compressor, not used for years, but appears to be in pretty good shape, model FL3201. Portable, 2 wheels with handle, horizontal tank. No manuals. Tested it, fires up ok and I was able to adjust the output pressure and use it to inflate my bike tires so far. Been doing a bit of research, found some parts lists and an exploded view of how it is put together. No owners manual or specs though. I did find an advertisement for it in a newspaper published in 1975, where it says for the specs “1/2 HP, 7.5 Gallon tank, 8 inch wheels, 3.2 cfm, max pressure 100 psi.” (On sale in those days for $79.95.)
The previous owner used it mostly with a paint sprayer to spray paint on his outdoor fence and deck, and inflate his car’s tires.
Most air compressors these days seem to be more than 1/2 HP. What do you think about using this one for a garage DIY’er, for an air ratchet, impact wrench, air hammer, air die grinder, etc?
Also, there appears to be an oil fill and drain plug. Thinking it might be a good idea to change the oil. I doubt it has been changed in 20 years. But I have no idea what kind of oil to use, and how much. Any ideas?