Sleeper air bag issue

Simple fix happened to mine ! There's a rod that hooks to leveling valve ! Probably popped of! If not cheap and easy to replace! No tools needed!

 

Check the feed line to the leveling valve to see if air is getting that far. If not, work your way back to tge main air supply. The filter you are referring to could be a check valve also. They can stick so you might already be on the right track.

 

Take off the air drier cartridge and clean out the inside body, sometimes if the filter hasn't been changed in a long time it can become clogged and the ports can get clogged with gunk.

Install a new cartridge and write the date of replacement on the outside of the cartridge.

You should replace the cartridge every two years.

 

Probably need a new air drier then. There is non replaceablr check valves inside the drier that can stick shut.

 

Like I said in my previous post, the drier and ports can get clogged up with gunk if not properly serviced.

Replacing the filter cartridge and running the engine and letting the drier do it's job with a new filter usually solves the problem.

Now just remember to change it out at least every two years.