Loss of air pressure

[shannondeese]

I keep loosing air pressure on shut down. I have checked every thing and the only thing that is leaking is the valve on the top back center of the fire wall. It acts like a pop off relief valve stuck open. What is it and can I repair it or do I have to replace it. Thanks for your help.

 

[kendelrio]

I've been losing air like that since I've owned my deuce. Bothered my OCD for a while, but I got over it.....

 

[dlawbrey]

That is your air pressue regulator. How long does it take to lose youir air?

 

[m16ty]

That is your air governor. What part of the governor is the air leaking out of? Is it leaking out of a fitting or is it leaking out of the cover where the adjusting screw is?

If it's leaking from the adjusting screw just take it off and carry it to the local NAPA or other truck parts store. They will have it.

 

[shannondeese]

It takes about 30 min to loose pressure. It's leaking from the rubber cap. I am going to assume that the adjusting screw is under that. Thanks for the advice.