Sears Model 919.167340 only build to 20lbs
by Tommy Fowler
Compressor runs but will only build pressure to 20lbs. When the pressure gets to 20lbs the air intake stops sucking air. Before this point it wil suck my hand hard.
There is a needle valve just prior to the switch assembly. Air escapes from there via a small slot that appears to be designed for that.
My compressor is Sears Model 919.167340 33 gal 6hp. Any help would be greatly appreciated.