11-05-2016, 09:06 PM
David you make some excellent points and you may be on to something in your second comment.
I would like to mention that Newell changed the way the tag axle dump operates sometime between my coach (281) and yours (427). The earlier coaches had two six packs in the rear and the later coaches only had one. The earlier coaches did not have the capability of increasing the pressure on the tag axle from the drivers seat, they used a switch with only normal and dump positions and, at in least mine, dump position dumps tag air in both travel mode and level mode. I have confirmed this both in the owners manual and electrically by confirming when the tag dump solenoids were actuated, although mine does have the HWH auto-leveling system rather than the Newell controls.
I would like to mention that Newell changed the way the tag axle dump operates sometime between my coach (281) and yours (427). The earlier coaches had two six packs in the rear and the later coaches only had one. The earlier coaches did not have the capability of increasing the pressure on the tag axle from the drivers seat, they used a switch with only normal and dump positions and, at in least mine, dump position dumps tag air in both travel mode and level mode. I have confirmed this both in the owners manual and electrically by confirming when the tag dump solenoids were actuated, although mine does have the HWH auto-leveling system rather than the Newell controls.