Rusty - I wasn't aware that the Deuces air system was supposed to reach 120 PSI. The gauge is only rated to 120#, and I have never seen a gauge installed to Max out with normal operating pressure. Of course the OTR truck gauges read out @ 150#. My truck cuts out @ about 100#. I have always imagined that replacement governors are factory preset to cut out @ 120#, as that is the "normal" for modern air systems. I don't believe my governor to have been replaced, & further, believe that replacement governors, refitted to a Deuce, should be reset to a lower cut out pressure, as 120# is too close to the pop-off pressure.
View attachment Scan0062.pdf A number of people have contacted me about the brake light switch I used on my system. So I decided to post it here. The first picture is the drivers side air-pac and switch. The second picture is the passenger side air-pac and switch. The reason I went to this switch and didn't reuse the military switch is because the military switch is a high pressure switch. It is meant to operate at pressures up to 3,000 psi. The problem is when you remount it to the trucks air system which only reaches 120 psi max. A lot of times it will fail to turn on causing no brake lights. This switch I used is a standard civilian truck air brake switch which turns on at 4 psi. (3-5 psi). I just wired it into my system and it works great. The cheapest price I found was at "anythingtruck.com" .
