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Old 10-17-2021, 02:08 PM   #1
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Air Dryer Re-Location

I have a project that I have been considering since shortly after my 2017 purchase of a 2007 Allure, specifically, right after I changed fluids & filters. I was very surprised to find that when I set out to replace the cartridge on the air dryer, it is mounted directly in front of the differential.

My previous RV, a 1997 Monaco Windsor, had the air dryer mounted on the inside of the right-hand-side frame rail, to the right side of the Allison, just rearward of the rear wheel well. It was easy to get at & service, so what was CC thinking? On my Allure, I just pulled the entire assembly out & replaced the complete air dryer unit. Oh boy, I could hardly wait for the next desiccant cartridge replacement!

Anyway, I am planning to relocate the entire air dryer assembly to the left of the 2 fuel filters that are mounted on the steel cross member just inside of the rear fiberglass cap & just below the engine access door opening. Moving both fuel filters/water separator slightly to the right will give me plenty of room & make future replacement of the cartridge much, much, much easier.

Has anyone else moved their air dryer? Any suggestions or concerns I should be aware of?

Thanks, Felix

2007 CC Allure Sunset Bay 37'
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Old 10-17-2021, 02:50 PM   #2
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Great Idea going to follow this one

Greg and Vicki R.
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Old 10-17-2021, 03:59 PM   #3
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We did it all the time when building our line trucks for the electric utility.
Mainly because of clearance issues with the body install, outriggers etc, certainly not for ease of service. Will the labor spent to move it ever pencil out in labor saved the few times it will require service?
Suppose only you can answer that question, but located ahead of the diff in no mans land seems like an odd location for an airdryer.
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Old 10-17-2021, 04:02 PM   #4
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Supposed to be a constant downhill slope from the compressor output, to the dryer input.
Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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Old 10-17-2021, 07:24 PM   #5
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As it is currently mounted, it appears to be slightly uphill from the compressor. If I move it to the engine compartment, I believe that it will be slightly lower, but I will get an accurate height measurement from my shop floor to the current location, to the compressor output fitting & to the new location.

I have changed just the cartridge this past summer so that's twice that I've been under the differential in 4 years. If I do the labor myself & the hoses are fairly inexpensive, probably well under $100, I will be very happy the next time I replace the cartridge!

Thanks, Felix

2007 CC Allure 37' Sunset Bay
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air, cat

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