2nd air gauge not working

[Streachy]

(03-26-2016 )stevesparts Wrote:  Has anyone else had their 2nd air gauge not work right? as mine fluctuate reading right at times then not at all:s
I've try a different gauge and sensors but still the problem still exists.:@ this is on a 07 w900 its really starting to bug the S%^T out of me....I'm just missing something that needs to be cleaned up(plug?) but have not found it. and maybe someone knows this one.

Had a similar problem on a 2014 T800 recently. The air wouldn't build up in the 2ndary tank. Called KW and they told me it was the air dryer. Turns out it was. Apparently that particular air dryer (a Bendix ADIS) has about 9 airlines coming out of it and it they go to anything from cab suspension to clutch fan. So when it goes you're basically parked. Not like the old style with an air going in and one coming out. Just a thought