Compressor pump and air backflow?
DeVilbiss. - compressor pump and air backflow?
I just recently tore the compressor pump apart to replace a broken bolt on the connecting rod. Reassembled just fine using silicon gasket instead of originals (all torn apart).
Compressor builds pressure fine, but when i shut it off, air flows back through the pump and out of a little hole in the top by the valves and air filter. I can only assume I reassembled something wrong?
I should mention this is a 2nd hand compressor that was given to me "needing repairs". It is a 6.5 horse 60 gal. DeVilbiss.
I'd much appreciate any help you could give me.
Cory, the first thing I would do is pull the tank check valve, clean or repair or replace it, and reinstall.
I suspect that some debris may have become lodged in the seats, and that may be what is allowing the air to bleed out of the tank when the compressor is off.
The other thing that I think might cause this is if there were a valve plate in the pump, and you inadvertently reversed it when you reinstalled it.
Did either help?