06-20-2023, 03:57 AM
I would suggest to get a cup of coffee and watch all these videos or have the owner of the coach watch them. There are 3 compressors aboard your coach, the main engine compressor the 120vac compressor and a 12v compressor. You say that you hear the air dryer sound off at 120 psi but there is no indication of PSI on the dash? Check your PPV valve.
https://www.youtube.com/watch?v=7rnRcyW96m4
https://www.youtube.com/watch?v=7rnRcyW96m4
1999 45' #504 "Magnolia"
Gravette, Arkansas
1996 40 XL Prevost Marathon