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Old 09-19-2020, 05:25 PM   #1
Join Date: Mar 2015
Posts: 47
Oasis dash fan replacement 2018 MADP

The Oasis heater fan behind and below the dashboard "glove box" on our 2018 MADP quit working recently. This placement of this unit was never made by Newmar to be replaced!! To get at the unit I removed the folding compartment directly in front of the passenger seat(see Oasis fan inside picture)
To get at the back screws of the fan unit I had to go into the Generator compartment where there is a plywood box with aluminum "L' trim holding the back on, but the panel extends way up under the fiberglass front end. (see picture Oasis fan outside). I had to very carefully cut just the 3/4" plywood back out after grinding the aluminum cover off, the picture shows my hack job.
I got a new fan unit from the Oasis factory hear in Vancouver BC and with MUCH difficulty replaced the unit and then made a new plywood pc and covered it all up with a new pc of aluminum (see picture Oasis with patch) If this had been done at a Newmar dealer I'm sure it would have cost several thousand dollars. I sent a note to Newmar asking them to put an access door in future models.
Not sure I got the pictures included but if anyone else has to do this replacement be prepared and take lots of time and have a bunch of band aids handy.
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2018 MADP 40', 2018 Jeep Grand Cherokee with Air Force One, 800 amps Lithionics.
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Old 09-19-2020, 06:23 PM   #2
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U probably saved yourself some serious money and did a nice job besides.
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Old 09-19-2020, 11:08 PM   #3
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Very poor design/engineering. No plausible reason for this type of build.

Great job. Persistence pays.
2019 DS 4018 (Spartan), Nighthawk
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Old 09-20-2020, 04:23 AM   #4
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I assume a fan needed to be replaced? Wasn't possible to service that while the radiator was in place?
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Old 09-20-2020, 08:11 AM   #5
Join Date: Mar 2015
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The motor packed it in, I think the thermal protection switch went bad. I bench tested it and it worked fine for a minute or so then started to surge then stopped. I got a complete motor and fan assembly unit as I did not want to try and tear the unit apart. The radiator assembly and plenum stayed in place. Getting the fan assembly out was tricky. and getting all the screws in was a real pain.
2018 MADP 40', 2018 Jeep Grand Cherokee with Air Force One, 800 amps Lithionics.
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ace, dash, fan, oasis, replace, replacement

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