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Old 01-26-2021, 06:53 AM   #181
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Yes, I found a number of the sintered bearings on alibaba... Iíll check if they have some that match the dimensions today. Although made in China and they may take months to get here, Iíll order a few for a few dollars and have them in hand for when the noise returns.
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Old 01-26-2021, 02:25 PM   #182
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I just noticed that around the finger spring that holds the bearing in place is a sponge packed in there. The bearings I have soaked overnight in warm oil have impregnated the oil on that sponge. Letís hope that works to release it slowly in the bearing.
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Old 03-01-2021, 05:36 PM   #183
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Well I guess one furnace is dead... there are reducers for the gasses going from the combustion chamber to the heat exchangers. Well they are both loose. I think they must be held in place by the chamber lining which may have deterioratedClick image for larger version

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Old 03-01-2021, 05:37 PM   #184
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Here it is removedClick image for larger version

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Old 03-01-2021, 05:38 PM   #185
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Whatís a good replacement for this furnace? R is there any way to traffic this safely? Kind of scary I suppose
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Old 03-01-2021, 08:00 PM   #186
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Whatís a good replacement for this furnace? R is there any way to traffic this safely? Kind of scary I suppose

Sorry, not traffic, to fix this safely... but searching for the burner box lining seems to return nothing so I suppose itís time for a new furnace.
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Old 03-01-2021, 08:17 PM   #187
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Sorry, not traffic, to fix this safely... but searching for the burner box lining seems to return nothing so I suppose itís time for a new furnace.

As much as you would depend on having safe and reliable heat, I would replace it. Whats the model number?
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Old 03-02-2021, 03:21 AM   #188
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This one is a Dometic duo-therm 901 series. 25k btu
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Old 03-02-2021, 03:42 AM   #189
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Hey Rob, that Kaola Wool also comes in a past form, it ends up as a hard thermal white ceramic sealer for high temps. Probably found through the same people you got the Kaola Wool from.
Or car exhast sealer in a tube an easy but well cheaper alternative.
That stuff would hold that part in would'nt it ?
Don't give up now!
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Old 03-02-2021, 06:28 AM   #190
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This one is a Dometic duo-therm 901 series. 25k btu
Atwood 8500 series?
https://www.airforums.com/forums/f42...ter-27209.html
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Old 03-02-2021, 08:04 AM   #191
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Pyro putty they call it. Interesting. Will also look at replacement furnaces. I was hoping to not have to cut the skin of the MH to fit different vents and it looks like the Suburban NT30 is no longer available.
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Old 03-02-2021, 02:30 PM   #192
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looks like the Suburban NT30 is no longer available.
Suburban NT 30 on amazon
https://www.amazon.com/dp/B0002F6868...GXS0QQDKZ38YCE

Suburban SF 30 on amazon
https://www.amazon.com/dp/B00T6LAVO4...8ZKY5C8B8CYM5V

A couple readily available options, not sure how much you'd have to modify the outer skin


Atwood 8500
https://www.campingworld.com/atwood-...B&gclsrc=aw.ds

Outer face plate means you don't have to worry about how the outer skin looks
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Old 03-03-2021, 06:07 AM   #193
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Thanks! The NT30 links appear spotty whether they are available or not. I think many have replaced with that one. Apparently the model is discontinued but there may be stocks remaining. The Atwood 8500 seems like it may require some cutting. Iíll try and get better pictures and see if whether a flex intake could be used similarly to what the duo-therm does to avoid having to cut the skin further.

From what I read apparently itís harder to replace the bedroom one so Iíll put my good duo therm back there and replace the front one with a new unit.

Thanks!
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Old 03-03-2021, 07:32 AM   #194
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I was wondering... has anyone fitted a gasoline or diesel webasto type heater instead of the furnace? Itís much easier to fill up gasoline than propane and it could be very easy to fit the small size heaters in there...
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Old 03-04-2021, 07:36 AM   #195
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1988 345... The adventure begins!

I did a bit of research and it looks like Webasto makes some RV specific retrofitting kits that could be great. I think Iíll do that but better fix my fuel gauge first
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Old 03-04-2021, 01:13 PM   #196
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I was wondering... has anyone fitted a gasoline or diesel webasto type heater instead of the furnace? Itís much easier to fill up gasoline than propane and it could be very easy to fit the small size heaters in there...
The diesel versions are very common in the van conversion world, more so because you can get a Chinese copy for less than $100.

The gasoline versions are less popular but not sure why.
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Old 03-04-2021, 03:40 PM   #197
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Thanks! The NT30 links appear spotty whether they are available or not. I think many have replaced with that one. Apparently the model is discontinued but there may be stocks remaining. The Atwood 8500 seems like it may require some cutting. I’ll try and get better pictures and see if whether a flex intake could be used similarly to what the duo-therm does to avoid having to cut the skin further.

From what I read apparently it’s harder to replace the bedroom one so I’ll put my good duo therm back there and replace the front one with a new unit.

Thanks!

I understand you are looking at other option incl a gasoline version. I would be concerned about where to safely tie into the existing fuel lines. I suppose a tie in to the generator line would work and would keep fools from running out of fuel.
If you go back to the propane versions, the NT-30 would be the easy drop in, but they are a pain to service, including getting access to the circuit board. The Atwood 8500 type allows easy access to many crucial service parts from the outside, but would require rerouting the propane line. Our propane tanks are huge and will last 2 weeks with 2 furnaces running non-stop.
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Old 03-07-2021, 06:38 PM   #198
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Yeah, youíre right. Tying in the generator line is likely the best option. This carbureted coaches have non pressurized lines (unless you have the boost pump in the tank) so tying into one is not an issue.
I saw that gasoline versions are limited in power. I am looking at a diesel option with a tank in the drawers. But I also may have fou d a good propane option so Iím not too sure yet what Iíll do
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Old 03-13-2021, 01:29 PM   #199
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Alright, Spring is appearing over the horizon I think. I am reinstalling the furnace in the main room and will reinstall the one in the bedroom but it is not going to be working. (I am just putting it back there so it seals the end of the propane line and as I donít want it just sitting in the garage. I will solve the bedroom heat issue later this season and in the meantime I can use an electric heater or catalytic heater is we donít have services.

I went over there to pull my gas detector and measure the hole to buy a new one. I think I will get a new combined propane and CO detector for added safety.

Then I inspected the tires and I think I will replace all 9. The spare has cracks between the threads and the rest appear to be dated 2010. And they look like they are past their prime.

Iím not too sure what brand to get so Iíll go get reading on the forum now.

Monday I I stall the high torque starter and install new house batteries. Then oil change and drive it to the tire place!

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Old 03-14-2021, 12:55 AM   #200
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Itís to bad that you wasted all that time only to find out the furnace was not worth repairing.......probably why they went out of business, Regards, Bob
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