OT-Air Compressor Problems, Please help me, my car is waiting Options

[Lou W]

I have a Speedaire Air Compressor, I just replaced the cylinder head due to the valves were bad.

Now, when I turn the compressor on, the pressure goes up to 140lbs, once its reaches 140lbs, the compressor automatically shuts off. The Bleed Off Valve then bleeds off down to 95lbs which then turns the compressor automatically on returning it up to the 140lbs.

If I turn the compressor switch off at the 140lbs, the Bleed Off Valves bleeds the pressure down to 120lbs and stops there.

My understanding is that the compressor should shut off at 125lbs, then once the pressure drops to 95lbs, it would kick back on. The only thing that should cause the pressure to drop from the 125lbs is when it is being drawn down by use of air tools not the Bleed Off Valve.

Any Suggestions?

[Lou W]

FYI,

It was the Pressure Valve. It works great now that it is replaced. I was told by the repair shop that I bought the Valve from, that they get sticky from carbon and oil build up and sometimes they need to be cleaned or replced. He also stated that my theory on how the switch work was wrong, the relays control the pressure, and that the Pressure Valve releases the pressure from the line that runs from the cylinders to the tank, so that its easier on the compressor to start up again.

Thank you all for your help on the diagonsis. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)