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Old 06-11-2020, 10:08 PM   #81
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4 bolts. Replace the gasket when its off. Some have the bracket and some dont and are just screwed into the roof structure. I would recommend having a dealer check them, if youre unfamiliar. Will save you alot more if you dont put it back perfectly and it leaks. You can also do the modification and add the chill grille to it if you do end up taking it off. If I kept my Jayco I was going to have the dealer add it to the two ducted ones. Most of the intake tracks are somewhat crushed and narrowed so helps get more air into it and pumps out more cold air. Personally, they should just have the old non ducted setups again. You can run multipes anyway on 50a power so just let them dump tje cold air in the room you want it in. Thebonly room I can see being a little cold air starved is the bathroom but I keep that vent closed anyway!
Very good description on how it’s done and the most important part was “let the experts do it if you are not 100% sure”. One small mess up and you can expect to pay many thousands on repairs.
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Old 06-12-2020, 05:51 AM   #82
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You have to unbolt the AC unit on the roof tilt it over and look at it from on top of the camper
Not with the MACH-8. You remove the shroud and then remove the cover from the blower it can be accessed if needed. The WHISPER QUIET baffle may even be built into the roof assembly, unlike the standard duct system

I would contact JAYCO and ask for a copy of how the ducting is designed. Since you may be looking for a possible problem that doesn't exist.
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Old 07-12-2020, 05:11 PM   #83
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Heat duct

Mine were torn from the factory. Just say’n
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Old 11-18-2020, 01:03 PM   #84
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There is a new product out that is suppose to improve efficiency up to 45% of your AC. Checked into it but at $170 per AC I decided I could do that myself.....here is what I came up with and saw HUGE improvements.


https://www.jaycoowners.com/forums/f...ods-81502.html
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Old 11-18-2020, 02:24 PM   #85
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That's a pretty good mod you got.
Gale Banks did a YouTube series on rear diff covers and how even the stock one is a better design than the aftermarket flatback higher fluid capacity ones are. Then he designed and patent one. Pretty interesting. Fluid flow and air flow are the same in a lot of ways.
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Old 11-18-2020, 09:47 PM   #86
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That's a pretty good mod you got.
Gale Banks did a YouTube series on rear diff covers and how even the stock one is a better design than the aftermarket flatback higher fluid capacity ones are. Then he designed and patent one. Pretty interesting. Fluid flow and air flow are the same in a lot of ways.
That was a pretty good series.
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Old 08-09-2021, 04:41 PM   #87
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That is what I was hoping to find out! 2017 27.5 RL Eagle HT Fifth Wheel
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Old 06-22-2022, 01:21 PM   #88
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Blocked Duct Work?

New RedHawk 26M and have been struggling with A/C keeping up when temps reach above 90. I watched the video and yes, the foam divider needs to be taped in as shown however, I seem to have blocked ductwork from the AC unit. See pictures attached…..is this normal? I cannot divert air flow from AC to the ducts in the ceiling.
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1BB4332C-E8ED-4591-8573-1B6AC41F4149.jpg   12B90F4E-FED6-4146-A8FB-A7B4DE68BD53.jpg   F0A3C533-A267-4431-876E-9F465BC2A375.jpg  
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Old 06-22-2022, 03:05 PM   #89
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Were the ducts blocked like that, or did you tape them closed?

Go to rvairflow.com and find the one that works for your AC....it eliminates the foam devider and will greatly increase your air flow. Saved me from buying a second AC.

Lots of YouTube videos. Most AC installations from the factory need to be redone because the people who install them don't care about quality or pride in their work.
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Old 06-22-2022, 03:25 PM   #90
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No the taped area was that way from the factory. The open areas (left and right of the tape) are blocked by white foam insulation. Just not sure which way the air is supposed to flow out of the AC if you divert to ceiling ducts. I also have question into Jayco support line as well.
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Old 06-22-2022, 05:29 PM   #91
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The ducting will usually be in a straight line from the ac to the ceiling vents.

You could remove the closest vent and poke a fish tape back towards the ac and see which blocked opening it comes into the output of the ac.

If they are blocked that seems like a classic fail on someone's part.
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Old 06-22-2022, 06:59 PM   #92
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I'm not familiar with what is supposed to be in a Redhawk, but it sure looks like they never cut the duct work openings. If you have ceiling ducts, they normally, just cut the opening in the duct work to match the steel opening in the AC frame. On my 2018 29MV, they cut one opening properly, but the driver side opening was only partially cut and they left the foam in place. So, the entire driver side run of vents were blocked.
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Old 06-27-2022, 05:46 PM   #93
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It's hard to see but this is what mine looks like
https://www.jaycoowners.com/forums/f...ons-88663.html

There should be a hard foam baffle between the two openings. Hot air goes up one, cold air come down the other. The baffle separates the two. On the cold side, if you have ducting, it should be cut out in the foam.
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Old 06-28-2022, 06:25 AM   #94
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It's hard to see but this is what mine looks like
https://www.jaycoowners.com/forums/f...ons-88663.html

There should be a hard foam baffle between the two openings. Hot air goes up one, cold air come down the other. The baffle separates the two. On the cold side, if you have ducting, it should be cut out in the foam.
This is the most helpful post yet. Your pictures show there are vents off each side of the AC on the cold air side going into the ceiling ducts. THAT’s what I am missing. I am going to take a punch saw and see if i can remove the lower portion of the foam to reach the ceiling ducts. Thanks for sharing this.
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Old 06-29-2022, 02:38 PM   #95
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You figure out if the foam wasn't cut out right? I might cut a small circle and put a hair dryer or something else in that hole and see if you can feel the air coming out of the ducts.

If it is, then grab cardboard, foil duct tape and clean it all up nice to so runs well.
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Old 06-29-2022, 02:39 PM   #96
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side thought.. you have to wonder if the rest of the ducts are setup right if it wasn't cut out there.. perhaps its not even supposed to be cut and there's a prefab shaft that's supposed to be there..
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Old 07-02-2022, 10:38 AM   #97
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A/C Connected to Ductwork Now

A quick update. Thanks a bunch for all the suggestions. Bought a borescope and explored the ductwork. It was never cut out. Then noticed the two different layers of foam from the A/C air exits. Cut through the bottom layer and it tapped right into the ductwork. We taped it up and now have full A/C through all ducts. Such a simple solution and of course the wife is mad at the lack of quality control. I just said it makes us part of the club. LOL. posted pictures from before and after I cut the foam. Forgot to take a final picture with all the HVAC tape in place. But you get the idea.
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