Air Pressure bleed off

[Jim Vogel]

When compressor reaches set pressure and turns off - - air
bleeds off within the unit and will go to O # if let set long enough. Sometimes it will stop if I turn the unit on and then off
within a couple of seconds running. Whats causing?

[Mark]

Hi Jim,

I think the problem is the tank check valve. If the valve doesn't seal off air will bleed back to the cylinder. There is a small vent hole in the cylinder head to bleed off the air escaping from the check valve. A new check valve should solve the problem. The check valve is part #D27022 and it is available from http://www.ereplacementparts.com.

I hope this helps with your repair!

-Mark

[hugh]

It sounds like a stuck check valve.