Air diagram for rear suspension
Here is a rear suspension air system diagram that Richard Entrekin & I put together so we could understand the air flow in the rear suspension. This schematic applies to coaches that have one rear six pack and covers years from the 90s into the 2000s. An important fact that is not clear in the schematic is that the tag axle air tank is actually two tanks that are separated on the inside. We hope this will help others troubleshoot their systems.