919.19512 - what will help my compressor
by tom bridges
(Asheville ,NC )
bill I have a craftsman model 919.19512 that is a pice of crap i will never buy from sears again.
i am rebuilding it now new motor, pressure switch, .what can i do to help take the load of the motor ? will a magnetic stater help or a load GENIE.ARE there better parts from GRANGER/northern tool. thanks for any advice .
Hi Tom. I would agree that the quality of low-end air compressors available today is inferior to years ago, but then, years ago, there were far fewer "cheapie" air compressors. Essentially, today, we get what we pay for... in fact, that's a truism for all things I suspect.
If the compressor is working properly, the compressor has been designed to handle the expect loading that the motor will see as the pump puts air into the tank and the back pressure increases.
So, when you say "what can i do to help take the load of the motor ?" I'm not quite sure what you mean?
Does this mean you want the motor able to handle a bigger load? Then a larger HP motor will do that.
Does this mean that you want the load to be less when the compressor starts up? Making sure your unloader valve is working properly will do this.
Any more details would be welcome as a comment here.
3 h.p. 20 gal. sears compressor pump will not run with air in tank
I have a 3 h.p. 20 gal. sears compressor that will run fine when tank is empty. After it pressures up and use the air, it kicks back on but pump will not turn over. I can bleed the tank and works fine again. Could the proplem be a check valve or pressure valve?
Probably neither, Brian.
What I suspect is your unloader valve isn't doing its job. Please see the Unloader Valve page for details. Check that out, and let me know if that solves the problem, will you?