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Topic: Air system leak (Read 317 times) previous topic - next topic

Air system leak

After my last use of the coach, I noticed that there was an air hiss coming from behind the rear axle on the passenger side. I found the device in the picture was constantly leaking. What is this and what does it take to fix it?

Thanks for your help
Rick

Re: Air system leak

Reply #2 –
Not a real good pictures but It looks to me like the air dryer.  The purge valve is leaking.  Looking at the craters in the dirt it looks' like they are under the dryer when it pops after compress shuts off.

  Many posts on this subject.

Re: Air system leak

Reply #4 –
Quote from: wolfe10 –
CORRECT!

The second topic I linked has several topics within it that show R&R plus some part numbers. 

Good photos in the PDF Dick S attached in this topic Replacing transmission retarder valve (split from What did you do to your coach)

Big Air Leak Hydraulic Accumulator

Mike's got a great write-up on cleaning/restoring the valve  Allison retarder air valve

Re: Air system leak

Reply #5 –
Thanks everyone. Called Foretravel and they have them in stock. One is on its way. (about $135}. I'll see about installing it next week.