I have an Sanborn 1 hp 22gal. model 84a100-22 air compressor. It's 40 years old and has been sitting out in the shed for the past 25 years. Is there any advice, recommendation, precaution, and inspection I should do before plugging it in. I changed the oil, check the drive belt and cleaned the air filter. it was in good work order when put in storage. Can I squirt some oil into the intake, disconnect the line to the tank and rotate the pulley by hand to lube the pump pistons?