If the pulley on it is original, I figured it was probably engine-driven originally, though I assumed it would be a standalone setup, and not driven by the truck engine. I had always assumed compressors driven by an automotive engine have rather different mounting brackets. By the way, the...
I forgot to mention that the pump is not terribly large, probably weighs 80 pounds at most. The pulley on it is probably about 7" diameter if I had to guess.
I need help identifying this air compressor pump. It is a four cylinder, single stage pump, it is NOT cast iron, and appears to be pressure lubricated based on the gauge near the shaft end. I do not know if the pulley currently on it is the original, but it has been welded to prevent it from...