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Old 12-22-2016, 03:32 AM   #15
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Originally Posted by FatChance View Post
Rotten-Red - thanks for the response. I cannot come up with a reason the foam (on an Evans HVAC under dash unit) would be there if there were no function for it being there. If the weather allows tomorrow, I will start the coach to see the vents in action. If not important, I will scrape off the degraded foam also.

Edit: it looks like one can remove the outer cover in which those foam pads (vents?) are mounted by taking out the screws on the drivers side and pulling the cover to that side to pull out the passenger side then remove the cover. Don't know if that is a six pack or full case level job?
Let us know what you do and how........picture's also if you can.
After posting I did a search and found this:
Dash HVAC observation
Same unit as our older one.......from reading this thread, no need to do anything with them.......if they are still intacked , which mine are. The foam is just a sound deadner from reading that thread?? The part the foam is mounted on opens and closes depending on the air setting on the dash.
Read post 14/15 in that thread.

2000 Newmar MADP 4060, 350ISC, Spartan MM, IFS 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006Ultra & 1989 Springer
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Old 12-22-2016, 08:44 AM   #16
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Originally Posted by Rotten-Red View Post

Your idea sounded very logical. So today I made the same modification to my latch. Works so much easier. Only half as hard to pull. Thanks for sharing a simple and effective solution.
pictures please!

Phil and Laura (and Sam too!)
2017 DSDP 4369 on Spartan K2
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Old 12-22-2016, 08:02 PM   #17
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Originally Posted by DrPhil View Post
pictures please!
Dr. Phil,

I used 1/8" X 1" Alum. bar stock for the piece. The hole drilled to fit over the original pivot pin is 25/64. The bolt is 1/4" dia. which is the size of the hole the cable fit into originally.

You can make the piece even longer for an easier pull. Mine now pulls about half as hard as before.
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Old 12-22-2016, 09:18 PM   #18
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Originally Posted by Rotten-Red View Post
The foam pads on the bottom door are not filters. There only there to form a better seal when the door is closed. That door is the opening for the fresh air intake for heater and vent positions. That door is only closed when the controls are all in the off and Max A/C positions. There is no air filtering going on there. The door is either all open or all closed. When it's open there's no filtering, just straight in unrestricted air.

My foam is also coming off. Haven't decided what to do about it yet. It has just started coming off. I doubt that it's really that important. When the door is closed with no foam pad on it some air will leak around the edges but probably not enough to be important.

IMHO since it is starting to come off I think we should either replace it or scrape it all off completely. If it comes off while heater or vent is in operation it will suck the foam into the heater core, not a good thing. Also with only part of the pad on the door it will not close as tight as it would with no pad at all.

I think I just talked myself into just scraping it all off and leaving it that way. I don't see an easy way to replace it. If someone finds a way please post it.
I removed all the original foam pads off today using a shop vacuum and just rubbing with my finger, they just rubbed off easily. Didn't need to use a scraper.

After the pads were off I closed the doors hoping they would close tight enough not to need anything put back on them. But that wasn't the case. There was quite a gap between the door and body that would allow to much outside air in. So I used 1/2" thick X 3/4" wide (that's what I had in stock, could use smaller I suppose.) open cell foam seal attached to the perimeter of the doors. Now they seal tight when door is closed. Will attach pictures. Maybe not very pretty, but very functional. Kinda like my DW.
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Old 12-23-2016, 12:01 PM   #19
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Thanks Rotten-Red! I will get some of that insulation when I go into town later today.

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