longhornjoe Report post Posted May 14, 2012 I have a 2008 Holiday Rambler Ambassador, 39', 360 Cummins. I am having a problem with the air system (for air ride). The "rear air" system takes forever to come up to a pressure that will release the alarm for low pressure. It never does go as high as it did before (or up to par with the front) and seems to hover just over minimum and alarms and shows low air pressure intermittently. Previously both front and rear ran somewhere around 100+lbs, adjusting of course for different conditions, but generally in that area. Now the rear barely makes 75, front works as always. Service company here says that the air is actually working fine with no leaks, but that the gauge/sensor is not. They say it needs a whole new panel cluster, the whole gauge panel assembly. But they are having great difficulty finding one. Any ideas or anyone seen this problem before. Or any ideas where one might find an assembly? The "new Monaco" not much help. Any input would be great. Thanks, Share this post Link to post Share on other sites
dickandlois Report post Posted May 15, 2012 What chassis is under your Coach. Your coach should have a Green gauge and a Red gauge. The green gauge should be reading the the primary supply that feeds air to the brakes and the red system supplies the air ride system. Could you fill in what gauge is reading the 75 Lbs. Rich. Share this post Link to post Share on other sites
longhornjoe Report post Posted May 16, 2012 It is RR8R chassis. Not sure where the gauges you are asking about are? I have two needle gauges on the dash, one for front air and one for rear. The digital display (which is not exactly an Alladin as shown in the manual, but works basically the same) does not read anything except "low rear air" until the pressure gets above the the minimum for the fault alarm. Then I can get a readout of the pressures, and the "rear air" reads the 75 Share this post Link to post Share on other sites
dickandlois Report post Posted May 16, 2012 Looking into the issue, I found that your chassis air ride height control system might be the problem. Should the adjustment(s) be out of range this could be causing the pressure problem in the air system. A loose control link might also be the problem. You might want to have the system checked. Rich. Share this post Link to post Share on other sites
