tracking down the air leak - right rear tag/drive tire area

[Dlsnow]

I had the bus over a pit to get the clutch rebuilt.
While under the bus it was obvious (loud) there was alot of air leaking from the right rear drive/tag tire area.

I have tried to check this out before with the bus on the ground but was convinced it was the governor bleeding off extra air.

I will get under there this week to spray and feel around to see where it is coming from.  I did have the airbags replaced about 2 years ago and am hoping there isnt a problem with them.

Any advice is appreciated.

[Oonrahnjay]

...Any advice is appreciated. 

      If a WAIG is "any advice", IMLE DOT plastic pipe can get abraded and that's pretty common, a big source of problems is connectors and the spot where the DOT pipe joins them -- these are a big source of leaks and are sort of "non-specific".  The other big issue spot is components; you could have a valve or brake can, basically, anything with fittings and seals and working parts.  Also, bags not installed correctly can rub against something and be damaged.
      Your original post was correct -- about all you can do get under there (SAFELY) and listen and spray.
      Just some thoughts, HIH,  BH NC  USA