Air system external charging

Question

Question about when a towing company uses their air system to charge a towed motorhome through the external charge port. Their air isn't filtered by the coach air dryer so if they introduced moisture into the system could it be removed by draining the tanks? Would it be circulated around and then caught by the filter once the coach was up and running again?

mile_high · Answer

I would think their air is filtered through the drier on their own truck.  When we were towed, it was his truck air he tapped into us.

shomemule · Answer

Mile High wrote:I would think their air is filtered through the drier on their own truck.  When we were towed, it was his truck air he tapped into us.  Likely that's the usually case but if you weren't sure and wanted to do something in a preventative sense would draining the system help or would the coach eventually remove the moisture as the air cycled through the system once you were back on the road?

wolfe10 · Answer

Yes, most tow trucks have AIR DRYERS.  But your tanks will have drains.  So, to do a "belts and suspenders" when you are back ready to go, open the tank drains to check for contaminates.

winstonbago · Answer

I have a 2003 Winnebago Journey, I noticed four leads with a circleular end to pull under the front passenger side wheel area.  Is this to drain the air tank's?

ncc-1701 · Answer

WinstonBago wrote:I have a 2003 Winnebago Journey, I noticed four leads with a circleular end to pull under the front passenger side wheel area.  Is this to drain the air tank's?Yes

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Air system external charging

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