Air tank pressure sensor

[Suprman]

I have an interesting one for you guys. I have a pressure sensor on my m923a2 upper air tank that is leaking air. I heard a little hiss with the truck off so I got out the windex and started hunting. I found a very small air leak from this pressure switch. It is not leaking around the threads it is leaking through the sensor. I am not sure if this is the ctis air switch or for the low air alarm on the dash. Does anyone know which one this sensor is and if a replacement is available. Thanks, Will

 

[juanprado]

That looks like the low air pressure for the dash light buzzer. There is 2 styles, both work the same. Old style looks like a oil pressure switch "can", new style is like yours. There is one on each air tank.

The location looks different than mine as I do not have an A2. Check the wire tag number to be sure.

http://www.eriksmilitarysurplus.com/lowairprwasw.html

 

[USMC6062]

Mine was leaking on my 923A1 when I got it. I almost jumped the gun and bought a new one, but decided to take it off first and see if I could stop the leak with JB weld or something temporarily. It turns out the switch comes completely apart and just needed cleaning and the air side of it tightened up. It works great with no leaks now, and saved myself 50 bucks. Trucks was still holding 60 psi after a few days of sitting.