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Topic: High front air gauge pressure high (Read 695 times) previous topic - next topic

High front air gauge pressure high

Our last home, noticed that the upper air pressure gauge was at 150 psi and the rear was normal(?)

Don't remember hearing the D2 pop off. Could that be our problem. Had it replaced a couple years ago.
Dick & Sue
'99 U320, 36'
2015 F150 4x4 Supercrew
M & G with brakeaway system
Blue Ox Avail 10,000# tow bar
Grosse Ile, Mi.

Re: High front air gauge pressure high

Reply #1 –
Echoing what I have read suggested many times here - swap the gauge inputs and see if the problem moves with the swap or not.  If it doesn't, bad gauge.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320
 

Re: High front air gauge pressure high

Reply #2 –
Dick,

Most of our coaches have a pressure relief safety valve on the wet tank.  It is usually rated at 150 psi opening pressure.  If you really had 150+ psi in your air system, or if the D2 failed to cut out the air compressor, then odds are the safety valve would open.  There would be NO question in your mind if this happened - it is LOUD when it opens and blows down the tank!  (Don't ask how I know...)

One gauge reading high is most likely a bad pressure gauge or pressure sender, depending on what is installed in your '99 model.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"