[Dan]

Excellent. Did you also check the Marathon side?

[Archived]

I drain the Marathon aux tank just about every day. I have an easily accessible valve in the generator compartment.

[Shelby & Barbara]

Thank you Peter and Jon for your responses.

During the past month of service people being under the coach for service I have had the rear tanks opened twice and little moisture and very little oil purge from the tanks. The coach air dryer is doing its job and the Norgrens seem to be doing their job. I am used to having a pull chain release on my wet tank so I could purge after each trip, but not so on the XL.

Peter, thanks for spending time with me last week to explain the method of checking , check valves between tanks. None of the service people who have been under my coach has ever talked to me about this, though I have questioned my R-12, 14, and check valves in my system, no testing was ever discussed with me. My 65 MCI was so simple.

As we live in and are more atuned to the coach and its sounds, I am leaning toward the Aux air system check valves as problematic. With the aux compressor which is a Galt off and the air bleeds out in about 2 hrs time the next is the tag axle pressure drop and the sounds of the weight shifting to the drive axle as the TAG begins to lift a bit. I know about the R12/14 replacements, and I would like to assemble the needed system check valve and have all on hand to replace the probable oringinal valves as I continue to zero out our 97xl.

TNX again to all who have responded to all us newer Prevost owners questions!

Jonathan Fine

1997 XL Royale #201

“Fool’s Paradise”