Sleeper air bag issue

2000 freightliner Century Changed air dryer, leveling valve governor, either I have the ability to split the transmission / losing air pressure or sleeper air bags and 120 of pressure when swithing lines. What gives???

 

Thanks I’ve replaced filter canister & governor it just does not put enough air in the bags to raise up my shocks

 

I am having the same issue I've changed the 2 airbags 2 shocks leveler twice brand new both times also just had the cartridge to the airdrive change yesterday the only thing I haven't changed yet is the dryer did you ever resolve this issue?

 

Afternoon y’all. 05 379 having same issue but my bags go up and down whether driving or sitting still. Than bam it stops till you release brakes. Personally believe mine is dryer but running a few other test. I pulled lines and it comes on than back off every 10 sec. Shoot maybe online check valve but requires too much air to fast. I’m at a lose filter has been changed lines governor blown out but nada.