Need some help in identifing two guages and somesort of pressure relief units. These are located at my left knee the the units are marked Hadley. The previous owner said they controlled the front air bags in the coils springs, but yesterday I traced the air bags pressure cable and they just route to two air valves in front of the radiator. I checked the pressure and they measured ~70 psi. The dash guages register about 40-50 psi. I have no idea what there functions are. Any enlightenment would be helpful.

thanks bill - yes -its a tag with a couple of bags in the rear. My little compressor is up front and its function was unknown - I'll try the knobbies and see what happens - thanks again...

[This message has been edited by kc_rusty (edited October 08, 2002).]

The little compressor might be for air horns. I've replaced my Hadley air horn compressor and tank/solenoid. If your air horns don't work - check the solenoid for crud build up, and the tank for water build up. Hadley has instructions on their web site to clean the solenoid. Good luck,
Ed