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Old 10-29-2012, 01:05 PM   #1
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1972 Argosy 20
Lanesboro , Minnesota
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Howling Furnace! Halloween Goblins?

My little furnace in my 72 Argosy 20 has dry bearings in the fan motor. It howls on start up and shut down. I have had several other RV's with the same issue. Has anyone figured out how to lube these?
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Old 10-29-2012, 01:26 PM   #2
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1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
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squeaky bearing

I usually dismantle the furnace and tip it on its side after I remove the fan. It takes a very long allen wrench. I then put oil on the outer axle and allow it to run down into the motor. I use 3 in one oil. It needs to stay on its side for some time to sink in. If I can get at the other side, which is more difficult, I use a long straw for a nozzle and use a spray lubricant to get to the axle. The other choice is to just replace the motor, which is a little more time consuming and will cost $115 to $130 for a new one.
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Old 10-29-2012, 01:41 PM   #3
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1974 Argosy 20
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usually oiling will only help for a very short time. Replacement of the motor or the furnace is most practical. It is almost 40 years old....
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Old 10-29-2012, 03:47 PM   #4
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1972 Argosy 20
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I'm assuming that the bearings are oilite bronze. If that's the case, I've had good luck with turbine oil. The stuff in the zoom spout bottles. Used to use that in dryer repairs and it lasted for years
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Old 10-29-2012, 06:36 PM   #5
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1977 31' Sovereign
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The bearings are oilite type bronze, or at least they look like bronze. I have had the furnaces run for three years after reoiling.
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Old 10-29-2012, 06:47 PM   #6
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Check the air adjustment

These furnaces can howl loudly because the air adjustment for the main burner is mis-set. Might be worth checking.
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Old 10-30-2012, 07:47 PM   #7
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1972 Argosy 20
Lanesboro , Minnesota
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Methinks I will pull it out and inspect it. Where it goes through the side of the trailer, there are a couple of riveted strips surrounding the cutout. Are there screws in there that attach it or do you just remove the screws in the bottom of the rear of the furnace where the access panel is located?
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