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Old 01-14-2012, 06:30 PM   #15
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This is kind of a postscript to my thread. I wasn't pleased with the way the furnace mated to the combustion inlet and outlet pipes as the furnace was about a quarter of an inch below the mating (female) tubes attached to the flanges on the exterior skin of the trailer. Also, the LP Gas supply for the stove was routed beneath the Zip Dee chair storage compartment along with a wire cable which didn't give enough top clearance to the furnace.

I re-routed and the gas feed and wire cable to the interior side of the Zip Dee Chair storage compartment and clamped them securely in place. Then I removed the carpet from the sub floor beneath the furnace along with any remaining staples, etc. I made some sample shims that were 3/8 of an inch thick and temporarily put them beneath the furnace and that seemed about right. Then I riped a couple of slabs off of a 2X4 about and milled them to 7/16" thick using my jointer and thickness planer. I experimented with the thickness and found that 5/16 was just right. I then screwed some side rails onto the 5/16 thick slabs to act as alignment guides for the furnace and allowed about 1/8" clearance on each side of the furnace. Now I can slide the furnace home easily and I'm not putting any strain on the intake and exhaust tubes.



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Old 01-19-2012, 02:37 PM   #16
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Where did you obtain the mud dauber screens, and are they stainless steel?
Thanks BC
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Old 01-19-2012, 10:36 PM   #17
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BC,
I bought mine at a local RV dealer (same folks who inspected my heat exchanger). They are a Camco brand which I used before on an Alumalite trailer that also had a Suburban furnace. Here's a link to the type of screens Amazon.com: JCJ M-300 Mud Dauber Screen for RV furnace Outside Fitting: Automotive. Camco and some other suppliers make a wide variety of these screens.
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Old 01-30-2012, 09:47 PM   #18
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Thanks Steve for this thread, I've decided to do the same on our NT-30, ordered my parts today after a tear down. Your pics REALLY helped!
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63 PARTS NEEDED

Tappan range oven (for spare parts)
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Marvel Refrigerator

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Old 01-30-2012, 10:44 PM   #19
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I have 2 of those furnaces in my 92 limited.
Both are running but the motors are squeaking in both units. I was thinking about lubing them when I remove my units
For a refurb as well, or should I replace them. Nice pics of your work btw.
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Old 01-31-2012, 09:38 AM   #20
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Goransons and 0557,
Thanks for the kind words! I really wanted to take the extra time to document the work in pictures and words so that others could hopefully have an easier time. In the end, it probably helped me to stay organized and the disassembly photos really helped in the reassembly.

On the motor squeaks, that sounds like a bushing squeaking. These motors have permanent "lifetime" lubrication. Also, I only think that a few sources have replacement motors (as I recall). I think that I would try to find someone who had new motors and get the price for a pair plus shipping. Then, I'd find an electric motor shop that could press on new bushings and get a price for that in order to make my decision.

Steve
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Old 01-31-2012, 04:20 PM   #21
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Nice thread. Well done, and thank you for the time spent. Bookmarked.
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Old 01-31-2012, 11:28 PM   #22
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REDNAX,
Thank you sir! I was looking at your thread about selling your Silver Streak. Do you currently have a trailer now?
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Old 02-01-2012, 08:27 AM   #23
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REDNAX,
Thank you sir! I was looking at your thread about selling your Silver Streak. Do you currently have a trailer now?
Picked up a '76 SS 32' recently to use for work. Hope to have it sold and gone in a few months as I do want a 32' - '35' rear bedroom config'd SS, Streamline (very rare) or Avion.
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Old 02-01-2012, 09:44 AM   #24
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I cured the squeaking bushes with a little oil, as documented here, and in particular at post 11:

http://www.airforums.com/forums/f427...ace-60957.html

Nick.
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Old 02-01-2012, 05:33 PM   #25
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Nick, this is good information. What kind of oil did you use? 3 in 1 makes a 20 weight viscosity electric motor oil (blue & white can) that I've used in the past on larger motors with oiler cups for the bushings. The fact that these motors have felts to retain the oil is good to know!

Thanks,

Steve
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Old 02-02-2012, 03:03 AM   #26
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Steve, I just used the diesel 15W-40 CI spec that I use in my Ram Truck. I reckoned it would handle heat, and be viscous enough to stick around for a while. I had some standard 3-in-1, but decided it was too thin, and I didn't know if it could handle the heat close to a furnace. Great thread, BTW.
Nick.
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Old 02-08-2013, 01:07 AM   #27
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Nick,
I'll attempting to do the motor re-oil soon. I have 2
NT30-K's,
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Old 02-08-2013, 06:36 AM   #28
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Nick,
I'll attempting to do the motor re-oil soon. I have 2
NT30-K's,
I always enjoy a project that has a great result and costs nothing, but just demands a little care and patience. I hope it goes well for you.
Nick.
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