Central Pneumatic Air Compressor 47065 leaking

[dougand3]

Central Pneumatic Air Compressor 47065 - Harbor Freight (21 gal / 2.5 HP ) is leaking out of the pressure switch box. I see on you tube that it is a concave diaphragm that fails but you can't find one. Anybody located one? Thanks

 

[dougand3]

I bought a whole pressure switch box on Amazon. $9 shipped. It was an exact replacement. Easy change out - just lather all threads with pipe sealant (Costs $3.50 for small tube at HD or Lowes or similar). The diaphragm was the only failed part - see hole in bottom of pic.

 

[G_P]

If you're sure its the diaphragm that failed, just replace the whole switch.
Chances are there are no repair parts available for the factory installed pressure switch.

 

[dougand3]

Yes, I did replace the whole pressure switch box - air compressor works fine now. The pic shows the bad diaphragm in the old switch. Too bad they don't sell just the diaphragm and you wouldn't have to toss a switch that is 95% good.