06' 780, rear air bags keep inflating sending ride height way too high.

These are you air solenoids they control 5th wheel slide, air horn, suspension dump, and also diff lock has nothing to do with leveling valve they style you have almost never seen one go bad even if they do it's not going to be anything that you would not be able to drive. make sure you replace leveling valve set the level properly make sure they chassis is level with the top of you tire in the drive when you are on level ground and you should be good. depends on the valve you have you might need to move around some air lines to make the new valve fit possibly but it's a normal problem on volvo nothing new.

 

Hello! I have different linkage on drive axles Freighliner Cascadia 2015. On first drive axle - 2 inches, on rear drive axle - 3 inches. If I do adjustment, rear axle linkage is always more then on 1st axle. ( like 2.5 and 3.5 inches) I thinks it must be same ride height on all drive axles. In manual - 2 5/8 inches on both axle (same). What is the problem? Thanks in advance!

 

Seeing as this is part off the Volvo subsection,it might be better if you repost this problem in the Freightliner section.

 

hi Tomar, i have similar problem,,overinflated airbags and weight gauge was way higher,,
So i am wondering , was the problem fixed once you changed leveling valve
Thanks