OF302-25B dumping air
Jun Air OF302-25B
Unloader valve dumping air then compressor starting up again. Keeps doing this in a "cycle".
Took unloader valve off and cleaned the little seal and brass pin, then added a touch of Fomblin grease to help keep a smooth action.
But still doing the cycling !! :-(
(See http://www.about-air-compressors.com/unloadervalve.html - Moderator)