Originally Posted by EZRider800
I have a 40' 2006 Holiday Rambler Ambassador class A diesel pusher. Air ride and air brakes. I know about the low air pressure alarm that will sound until the pressure comes up to about 90 PSI. Mine works fine and goes off like it's supposed to when the pressure comes up. The problem I have is that when I put the 3000 series Allison Transmission into DRIVE or REVERSE the same alarm comes back on and I can't figure out why? There are no codes showing on the touch pad and the coach runs and drives beautifully. Gauges all look good. Every now and then the alarm won't come on when I try to drive it but lately it stays on ALL THE TIME as long as the transmission is in D or R. HELP!! I just drove 5 hours to visit the grandkids with the alarm blaring the whole time. Camping World suggested I go see the Allison Dealer. The Allison Dealer told me to go to Camping World. (sigh) I've read the owners manual till I'm blue in the face. I can't find this alarm mentioned. Anybody have any ideas? Anybody know how to disconnect the alarm so I can drive home without going crazy? Thanks!
Well Sir, I've breezed through most of the answers and did not find anyone telling you that, your LOW AIR BUZZER should cease
at or very near 60 psi, not 90 psi. If it was continuing on to 90 psi, that most likely was the start of your issue or, at the very least, was another potential issue. A basic air system, has a normal compressor cut off at or near, 125 psi. Cut-in pressure is at or near around 90 psi. Air buzzer warning is at or near 60 psi and, parking brake automatic activation is at or near 30 psi. Just for your info. Glad you got your buzzer problem resolved.